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Metal‐covalent organic frameworks (MCOF) as a bridge between covalent organic framework (COF) and metal organic framework (MOF) possess the characteristics of open metal sites, structure stability, crystallinity, tunability as well as porosity, but still in its infancy. In this work, a covalent organic framework DT‐COF with a keto‐enamine structure synthesized from the condensation of 3,3′‐dihydroxybiphenyl diamine (DHBD) and triformylphloroglucinol (TFP) was coordinated with Cu2+ by a simple post‐modification method to a obtain a copper‐coordinated metal‐covalent organic framework of Cu‐DT COF. The isomerization from a keto‐enamine structure of DT‐COF to a enol‐imine structure of Cu‐DT COF is induced due to the coordination interaction of Cu2+. The structure change of Cu‐DT COF induces the change of the electron distribution in the Cu‐DT COF, which greatly promotes the activation and deep Li‐storage behavior of the COF skeleton. As anode material for lithium‐ion batteries (LIBs), Cu‐DT COF exhibits greatly improved electrochemical performance, retaining the specific capacities of 760 mAh g−1 after 200 cycles and 505 mAh g−1 after 500 cycles at a current density of 0.5 A g−1. The preliminary lithium storage mechanism studies indicate that Cu2+ is also involved in the lithium storage process. A possible mechanism for Cu‐DT COF was proposed on the basis of FT‐IR, XPS, EPR characterization and electrochemical analysis. This work enlightens a novel strategy to improve the energy storage performance of COF and promotes the application of COF and MCOF in LIBs. [ABSTRACT FROM AUTHOR]

Simultaneously achieving high energy density and high‐power density in energy storage systems is a crucial direction for developing next‐generation energy storage technologies. The high capacity and rapid kinetic performance of rechargeable proton batteries provide an ideal solution for overcoming energy limitation of capacitors and power constraints of traditional metal‐ion batteries. Research efforts primarily concentrated on electrode materials design, understanding the charge storage mechanisms, and exploring the failure mechanisms. While there has been relatively less emphasis on the modifications to electrolytes and electrode‐electrolyte interfaces to enhance overall performance. Summarizing and sorting relevant work is crucial in providing direction and suggestions for future research endeavors. Herein, to improve energy density, power density, and cycle stability of proton batteries, a series of recently published studies on electrolyte and electrode‐electrolyte interfaces are discussed and reviewed. Furthermore, challenges and future directions pertaining to the electrolytes of proton batteries have been identified, offering insights to facilitate the development of proton battery technology. [ABSTRACT FROM AUTHOR]

A two-dimensional covalent organic framework (NTCDI-COF) with rich redox active sites, high stability and crystallinity was designed and prepared. As a cathode material for lithium-ion batteries (LIBs), NTCDI-COF exhibits excellent electrochemical performance with an outstanding discharge capacity of 210 mA h g−1 at 0.1 A g−1 and high capacity retention of 125 mA h g−1 after 1500 cycles at 2 A g−1. A two-step Li+ insertion/extraction mechanism is proposed based on the ex situ characterization and density functional theory calculation. The constructed NTCDI-COF//graphite full cells can realize a good electrochemical performance. [ABSTRACT FROM AUTHOR]

Highlights: By selecting 4-methylbiphenyl as an anion ligand and 2-methyltetrahydrofuran as a solvent, the as-prepared micro-sized SiO/C anode can achieve an initial Coulombic efficiency of ~100%. Molecular dynamics simulations demonstrate that the ideal prelithiation efficiency can be achieved by choosing appropriate anion ligand and solvent to regulate the solvation structure of Li+. The positive effect of pre-lithiation on cycle performance has been verified by using an in-situ electrochemical dilatometry and solid electrolyte interphase film. The solvation structure of Li+ in chemical prelithiation reagent plays a key role in improving the low initial Coulombic efficiency (ICE) and poor cycle performance of silicon-based materials. Nevertheless, the chemical prelithiation agent is difficult to dope active Li+ in silicon-based anodes because of their low working voltage and sluggish Li+ diffusion rate. By selecting the lithium–arene complex reagent with 4-methylbiphenyl as an anion ligand and 2-methyltetrahydrofuran as a solvent, the as-prepared micro-sized SiO/C anode can achieve an ICE of nearly 100%. Interestingly, the best prelithium efficiency does not correspond to the lowest redox half-potential (E1/2), and the prelithiation efficiency is determined by the specific influencing factors (E1/2, Li+ concentration, desolvation energy, and ion diffusion path). In addition, molecular dynamics simulations demonstrate that the ideal prelithiation efficiency can be achieved by choosing appropriate anion ligand and solvent to regulate the solvation structure of Li+. Furthermore, the positive effect of prelithiation on cycle performance has been verified by using an in-situ electrochemical dilatometry and solid electrolyte interphase film characterizations. [ABSTRACT FROM AUTHOR]

A novel hexaaminobenzene-based triangular topology covalent organic framework (HAB-COF) was first synthesized and studied as an anode material in the lithium-ion batteries. Benefiting from its conjugated structure and high-density C=N groups designed in the skeleton, the electrons transport and insertion/extraction of metal ions in HAB-COF got effectively promoted. Remarkably, upon a capacity-increasing and/or activation process, the HAB-COF organic electrode delivered high reversible capacities and excellent cycle life with a specific capacity of 1255 mAh g−1 at 1 A g−1 after 1100 cycles. Based on the analysis of cycled electrodes at different cycles, a stepwise-deepen thirty-electron lithiation mechanism of the covalent organic framework was speculated involving C=N bonds and steadily activated aromatic C=C groups. This work proves the potential of structure-designed COFs as electrode materials for high-capacity lithium-ion batteries, as well as deepens the fundamental understanding of storage mechanism. A novel covalent organic framework (HAB-COF) with high-density imine groups is synthesized and studied as an anode in the lithium-ion batteries. Upon a capacity-increasing process, the HAB-COF organic electrode delivers excellent cycle performance with a specific capacity of 1255 mAh g−1 at 1 A g−1 after 1100 cycles and even 1927 mAh g−1 at 0.1 A g−1. A thirty-electron lithiation mechanism involving C=N and aromatic C=C groups is proposed for the HAB-COF. [ABSTRACT FROM AUTHOR]

To satisfy the increasing demand for higher energy density, the fabrication and structural designs of three‐dimensional (3D) thick electrodes have received considerable attention. In this work, cheap commercial graphite (Gt) and silicon monoxide (SiO) were chosen as raw materials. We have took advantage of the multi‐layer biscuit structure feature to the 3D Gt@GS (Gt@Gt/SiO) electrode with high loading through a modified 3D printing technology. Such a unique structure can not only effectively accommodate the volume expansion in all directions, but also provide a 3D transport channel to enhance the mobility of electrons and ions in the thick electrodes. The obtained 3D Gt@GS electrode, as a freestanding material, shows high capacity and good cycling stability. Especially, the 3D Gt@GS electrode after 120 cycles has achieved a reversible capacity of 3.52 mAh cm−2 at 3.6 mA cm−2. In addition, we have successfully fabricated a 3D plane‐shaped batteries via a direct ink writing technology and a fused deposition technology. The heterotypic battery assembled can be utilized as an external power supply for the aircraft model. This work demonstrates that the structural battery combined with structural load and 3D printing technology is versatile enough to meet the demand of energy storage systems for high energy density. [ABSTRACT FROM AUTHOR]

Residual lithium on the surface and the resulting side reactions for high‐energy‐density Ni‐rich layered oxide cathodes principally impede their industrial application and trigger safety concerns. Herein, the successful construction of LiBO2−B2O3 co‐modified single‐crystal LiNi0.6Co0.2Mn0.2O2 (SC‐NCM) as a lithium‐ion battery (LIB) cathode is reported. Boric acid reacts with the surface residual lithium species to form such uniform coating on the SC‐NCM particles, which presents advanced rate and cycling capabilities. As the cathode materials for LIBs, LiBO2−B2O3 co‐modified SC‐NCM delivers a 141.9 mAh g−1 discharge specific capacity at 5 C between 3.0 and 4.5 V versus Li+/Li with 61.4 % capacity retention after 500 cycles, superior to the 20.8 % retention for the pristine SC‐NCM cathode. Besides, the LiBO2‐B2O3 protective layer substantially inhibits the unexpected phase transformation, effectively alleviates the mechanical microcracks, and stabilizes the cathode‐electrolyte interface, even at an extended operational potential window. The proposed microstructure‐modified SC‐NCM cathode provides an affordable and feasible design strategy for Ni‐rich SC‐NCM cathodes towards stable electrochemical performance and prolonged service life at high potential. [ABSTRACT FROM AUTHOR]

Silicon-based materials, as the most promising candidates for high-performance lithium-ion batteries (LIBs), have been widely researched. However, the construction of stable electrode structure is still a challenge due to the enormous volume variation. Herein, we developed a three-dimensional (3D) binder network, polydopamine grafted cross-linked polyacrylamide (PDA-c-PAM), to build a durable anode for LIBs. The flexible PDA side chain in PDA-c-PAM offers the superior adhesion with constitutes of the electrode. And the 3D cross-linked PAM main chain endows PDA-c-PAM high stretchability to accommodate the volume variation of active material and maintain the structural integrity of electrode. As a binder for SiO/graphite (SiO/C), the fabricated SiO/C@PDA-c-PAM anode delivers an initial discharge capacity of 1350 mAh g−1 at 0.1 A g−1. At a high current density of 1 A g−1, it maintains 591 mAh g−1 after 300 cycles with a 94% capacity retention of initial capacity after activation. Coupled with commercial LiNi0.6Co0.2Mn0.2O2 (NCM622) cathode, the full cell exhibits a high-energy density of 406 Wh kg−1 at 1 C as well as excellent stability. Thus, it is believed that designing 3D network binder is an effective approach to achieve superior cycle performance of SiO/C electrodes. We successfully synthesized a polydopamine grafted cross-linked polyacrylamide (PDA-c-PAM) polymer as binder for SiO/C anode to maintain the structural integrity and improve the cycling stability of electrode. The flexible PDA side chain in PDA-c-PAM offers the binder superior adhesion. And the 3D cross-linked PAM main chain endows the binder high stretchability. The fabricated SiO/C@PDA-c-PAM anode delivers a capacity of 591 mAh g−1 after 300 cycles at 1 A g−1. Thus, it is believed that designing 3D network binder is an effective approach to achieve superior cycle performance of SiO/C electrodes. [ABSTRACT FROM AUTHOR]

Most of the insertion anode materials are approaching their specific capacity limitations. TiNb24O62, combining the merits of high theoretical capacity, large working potential and excellent safety, is a promising candidate for lithium‐ion batteries (LIBs). However, its poor intrinsic conductivity and relatively sluggish reaction kinetics hinder its wide applications. Herein, we encapsulate the oxygen‐deficient TiNb24O62 microspheres by highly conductive N‐doped carbon nanolayer (DTNO@NC), where TiNb24O62 is purposely made to exhibit oxygen deficiency, by aerosol spray followed by co‐carbonization of the electronically coupled polydopamine (PDA) coating layer. The oxygen‐deficient engineering for TiNb24O62 improves the intrinsic conductivity and active sites, while the PDA derived N‐doped carbon coating layer not only stabilizes the interface between the electrode and electrolyte, but also further enhances the overall conductivity. As a result, the as‐fabricated DTNO@NC electrode delivers excellent Li+ ion storage capacity (270 mAh g−1 at 0.1 A g−1) and superior cycling lifespan (capacity retention of 90 % after 1000 cycles). This work demonstrates the effectiveness of integrating an oxygen‐deficient structure of intercalation‐type anode material with a carbon encapsulating nanolayer in enabling the overall energy storage performance. [ABSTRACT FROM AUTHOR]

Nickel‐rich cathode materials have been regarded as the most promising candidates for lithium‐ion batteries because of their superior specific capacity and cost‐effectiveness. However, the rapid capacity fade under high current density and serious side reactions during long‐term cycling hinder its wide application. In this study, piezoelectric BaTiO3 nanodots are employed as a functional coating layer on the LiNi0.6Co0.2Mn0.2O2 cathode material to balance the relationship between structure and performance. A three‐phase interface model is proposed including the LiNi0.6Co0.2Mn0.2O2 cathode material, uniform piezoelectric BaTiO3 nanodots, and the electrolyte. The coating layer plays a key role in the rapid diffusion of lithium‐ions as well as stabilizing the bulk structure of the cathode materials. Furthermore, the possible by‐products generated during the electrochemical cycling that can be alleviated by the modification of BaTiO3 are detected by using differential electrochemical mass spectrometry. As expected, our strategy efficiently improves the structural stability and holds a high‐rate performance. [ABSTRACT FROM AUTHOR]

Organic lithium ion batteries (LIBs) are considered as one of the next‐generation green electrochemical energy storage (EES) devices. However, obtaining both high capacity and long‐term cyclability is still the bottleneck of organic electrode materials for LIBs because of weak structural and chemical stability and low conductivity. Covalent organic frameworks (COFs) show potential to overcome these problems owing to its good stability and high capacity. Herein, the synthesis and characterization of two π‐conjugated COFs, derived from the Schiff‐base reaction of 2,4,6‐triaminopyrimidne (TM) respectively with 1,4‐phthalaldehyde (PA) and 1,3,5‐triformylbenzene (TB) by a mechanochemical process are presented. As anode materials for LIBs, the COFs exhibit favorable electrochemical performance with the highest reversible discharge capacities of up to 401.3 and 379.1 mAh g−1 at a high current density (1 A g−1), respectively, and excellent long‐term cyclability with 74.8 and 72.7 % capacity retention after 2000 cycles compared to the initial discharge capacities. [ABSTRACT FROM AUTHOR]

The further development of conducting polymers (CPs) as electrode materials is restricted by the limited doping level, solely ionic reaction as well as the insufficient reversibility and stability. In order to overcome the deficiency of intrinsic properties, a combined strategy is adopted to modify a p‐type CP (polythiophene, PTh) through grafting a radical pendant (2,2,6,6‐tetramethylpiperidinyl‐1‐oxyl, TEMPO) and incorporating a redox‐active dopant (Fe(CN)63−) into the π‐conjugated backbone of PTh. TEMPO group works as the electron donor allowing anionic incorporation (PF6−, ClO4−) and Fe(CN)63− doping in the conducting matrixes of PTh combines with cations (Li+) to deliver extra capacity, leading to the final composite shows a successive cationic and anionic (de)‐intercalation behavior. This dual‐ion transportation mechanism of Fe(CN)63− doped P(Th‐TEMPO) facilitates the enhanced electrochemical performance, including two significant voltage plateaus (3.6 V and 2.9 V), a reversible capacity from 76 mAh g−1 to 135 mAh g−1 at an ultra‐high coulombic efficiency (more than 99 %), which result in a high energy density. [ABSTRACT FROM AUTHOR]

Abstract: High‐voltage Li2SiO3‐composited LiNi0.5Mn1.5O4 hollow spheres synthesized through a scalable in situ aerosol spray pyrolysis process combined with short‐term high‐temperature calcination are investigated as an ultralong‐life cathode for high‐energy Li‐ion batteries. The phase structure, morphology, and valence state of the LiNi0.5Mn1.5O4/Li2SiO3 composites are investigated by using X‐ray diffraction, electron microscopy, and X‐ray photoelectron spectroscopy. The three‐dimensional Li‐ion conductor Li2SiO3 can effectively enhance the Li+ diffusion rate, alleviate the side reactions, and reduce the formation of a solid electrolyte interphase (SEI) as a protective layer between the LiNi0.5Mn1.5O4 electrode and electrolyte interfaces. Li2SiO3‐composited LiNi0.5Mn1.5O4 has a better rate and cycling performance, especially long cycling performance. After 500 cycles at 25 °C at 1 C, the capacity retention of the composite is 93.28 %, and the capacity retention is 81.23 % after 400 cycles at 50 °C at 1 C rate. The excellent long cycling and capacity retention indicate that the three‐dimensional Li‐ion conductor Li2SiO3 composite with LiNi0.5Mn1.5O4 is a promising material for high‐energy Li‐ion batteries. [ABSTRACT FROM AUTHOR]

Abstract: Spinel LiNi0.45Cr0.1Mn1.45O4 synthesized by a scalable solution route combined by high temperature calcination is investigated as cathode for ultralong‐life lithium‐ion batteries in a wide operating temperature range. Scanning electron microscopy reveals homogeneous microsized polyhedral morphology with highly exposed {100} and {111} surfaces. The most highlighted result is that LiNi0.45Cr0.1Mn1.45O4 has extremely long cycle performance and high capacity retention at various temperatures (0, 25, 50 °C), indicating that Cr doping is a prospective approach to enable 5 V LiNi0.5Mn1.5O4 (LNMO)‐based cathode materials with excellent cycling performances for commercial applications. After 1000 cycles, the capacity retention of LiNi0.45Cr0.1Mn1.45O4 is 100.30% and 82.75% at 0 °C and 25 °C at 1 C rate, respectively. Notably, over 350 cycles at 50 °C, the capacity retention of LiNi0.45Cr0.1Mn1.45O4 can maintain up to 91.49% at 1 C. All the values are comparable to pristine LNMO, which can be attributed to the elimination of LiyNi1−yO impurity phase, highly exposed {100} surfaces, less Mn3+ ions, and enhancement of ion and electron conductivity by Cr doping. Furthermore, an assembled LiNi0.45Cr0.1Mn1.45O4/Li4Ti5O12 full cell delivers an initial discharge capacity of 101 mA h g−1, meanwhile the capacity retention is 82.07% after 100 cycles. [ABSTRACT FROM AUTHOR]

Polythiophene-coated porous silicon core-shell nanospheres (Si@PTh) composite are synthesized by a simple chemical oxidative polymerization approach. The polythiophene acts as a flexible layer to hold silicon grains when they are repeatedly alloying/dealloying with lithium during the discharge/charge process. The long lifespan and high-current-density rate ­capability (at a current of 8 A g−1) of the Si@PTh composite are vastly improved compared with as-prepared Si spheres. Typically, these Si@PTh composite electrodes achieve a reversible capacity of 1130.5 mA h g−1 at 1 A g−1 current density after 500 cycles, and can even possess a discharge capacity up to 451.8 mA h g−1 at 8 A g−1. The improved electrochemical performance can be ascribed to the synergy effects of the flexible PTh coating and the distinctive core-shell nanospheres with porous structure, which can largely alleviate the volume expansion of the Si during alloying with lithium. [ABSTRACT FROM AUTHOR]

Highlights: The synthesis strategies of nanohollow carbon materials, including nanospheres, nanopolyhedrons, and nanofibers are summarized. Nanohollow carbon materials used as electrode materials in several types of rechargeable batteries are reviewed. The challenges being faced and perspectives of nanohollow carbon materials are discussed. Among the various morphologies of carbon-based materials, hollow carbon nanostructures are of particular interest for energy storage. They have been widely investigated as electrode materials in different types of rechargeable batteries, owing to their high surface areas in association with the high surface-to-volume ratios, controllable pores and pore size distribution, high electrical conductivity, and excellent chemical and mechanical stability, which are beneficial for providing active sites, accelerating electrons/ions transfer, interacting with electrolytes, and giving rise to high specific capacity, rate capability, cycling ability, and overall electrochemical performance. In this overview, we look into the ongoing progresses that are being made with the nanohollow carbon materials, including nanospheres, nanopolyhedrons, and nanofibers, in relation to their applications in the main types of rechargeable batteries. The design and synthesis strategies for them and their electrochemical performance in rechargeable batteries, including lithium-ion batteries, sodium-ion batteries, potassium-ion batteries, and lithium–sulfur batteries are comprehensively reviewed and discussed, together with the challenges being faced and perspectives for them. [ABSTRACT FROM AUTHOR]

Although silicon is considered as one of the most promising anode materials in next‐generation lithium‐ion batteries, large volumetric expansion during cycling hampers its practical application. The fabrication of silicon/carbon composites is an effective way to improve electrical conductivity and inhibit electroactive material delaminating from the current collector. Herein, a graphitic carbon‐coated porous silicon nanospheres (p‐SiNSs@C) composite is prepared through a chemical vapor deposition (CVD) technique by using the magnesiothermic reduction by‐product MgO as a template and catalyst. With the template of in situ generation of MgO, the p‐SiNSs@C material is obtained in a very short time. Due to the graphitic carbon shell and porous structure inside the silicon nanospheres, the obtained p‐SiNSs@C, with 8 min carbon growing time (p‐SiNSs@C‐2), deliver a high initial reversible capacity of 2220 mAh g−1 at 0.1 A g−1 and respectable rate capability. Furthermore, the p‐SiNSs@C‐2//LiCoO2 Li‐ion full cell displays a high energy density of ≈409 Wh kg−1 and good cycling performance. The high performance of the p‐SiNSs@C‐2 composite can be attributed to the synergistic effect of nanoscale‐sized Si, porous structure, and stable carbon shell. [ABSTRACT FROM AUTHOR]

High energy density batteries and high power density supercapacitors have attracted much attention because they are crucial to the power supply of future portable electronic devices, electric automobiles, unmanned aerial vehicles, etc. The electrode materials are key components for batteries and supercapacitors, which influence the practical energy and power density. Metal-organic frameworks possessing unique morphology, high specific surface area, functional linkers, and metal sites are excellent electrode materials for electrochemical energy storage devices. Herein, we review and comment on recent progress in metal-organic framework-based lithium-ion batteries, sodium-ion batteries, lithium-air batteries, lithium-sulfur/selenium batteries, and supercapacitors. Future perspectives and directions of metal-organic framework-based electrochemical energy storage devices are put forward on the basis of theoretical knowledge from the reported literature and our experimental experience. [ABSTRACT FROM AUTHOR]

Highlights: [•] A new synthesis of TiO2/nitrogen-doped reduced graphene oxide nanocomposite. [•] Nitrogen-doping can significantly improve the conductivity of graphene. [•] Nitrogen-doped graphene is valuable in promoting electron transfer. [•] The TiO2/N-RGO exhibits superior rate capability and cycle stability. [Copyright &y& Elsevier]

Abstract: Spinel Li4Ti5O12 nanorods coated with poly (3,4-ethylenedioxythiophene) (PEDOT) layer as an anode material for lithium ions battery were synthesized by a facile soft chemistry approach. The highly conductive and uniform PEDOT layer coated on the surface of Li4Ti5O12 nanorods significantly improves the electrochemical performance of the composite, which exhibits higher reversible capacity and better rate capability compared with the pure Li4Ti5O12 and Li4Ti5O12/C composite. The reversible capacity of Li4Ti5O12/PEDOT nanorods can be up to 171.5mA h g−1 at the rate of 0.2C. And a capacity of 168.7mA h g−1 was retained with only 0.5% capacity loss after 100 charge-discharge cycles at the rate of 1C, which confirms the good cycling behavior of Li4Ti5O12/PEDOT nanorods. The superior electrochemical performance of the Li4Ti5O12/PEDOT nanorods could be attributed to the one-dimensional (1D) morphology and uniform conducting polymer layer, which shortens the lithium-ion diffusion path and improves the electrical conductivity of Li4Ti5O12. [Copyright &y& Elsevier]

Highlights: [•] Facile electrospinning method combined with soft-template self-assembly. [•] Abundant mesopores and large specific surface area. [•] Superior rate capability and excellent cycling stability. [ABSTRACT FROM AUTHOR]

The commercial coating way of lithium-ion batteries has generally used wet coating technology so far. However, N-Methyl-2-pyrrolidone (NMP) is a toxic and expensive organic solvent using in this wet electrode manufacturing process, which is not environmentally friendly and greatly increases the cost of batteries. Herein, the solvent-free electrodes are prepared by electrostatic spraying without any solvent for lithium-ion batteries. The effects of different binder content on the mechanical, morphology and electrochemical performance are explored for solvent-free electrodes. When the contents of binder added are too much or little, the aggregates of binder and conductive agent more easily present uneven distribution in the whole electrodes. Moreover, the differences between the solvent-free electrodes and conventional wet electrodes are systematically compared. Notably, the binder and conductive agent are uniformly distributed with a point contact mode in the solvent-free electrode, which is conducive to rapid ions transfer and robust structural integrity, leading to a better rate capabilities and cycle performance. This work provides some reference value and guiding significance for the subsequent preparation and research of solvent-free electrodes. [Display omitted] ● Solvent-free Li-ion battery electrode is prepared by electrostatic spraying. ● The effects of binder content for solvent-free electrodes are explored. ● The solvent-free electrode and the conventional wet electrode are compared. ● The solvent-free electrodes have better cycling and rate capabilities. [ABSTRACT FROM AUTHOR]

• A one-dimensional TiNb 24 O 62 nanowire with oxygen vacancy was prepared by simple electrostatic spinning and subsequent hydrogenation process. • The as-prepared H-TNO-1h shows a high reversible capacity, safe working voltage, ultrahigh initial Coulombic efficiency, excellent rate performance and superior cycle stability. • The galvanostatic intermittent titration technique and pseudocapacitive contribution analysis prove that the as-prepared H-TNO-1h has excellent electrochemical kinetic, along with fast Li+ conduction and significant pseudocapacitance behavior. The intercalation pseudocapacitive anode material TiNb x O x+2.5x (x = 2,5,24) has attracted much attention owing to its high theoretical specific capacity (388–402 mAh g−1) and relatively safe working voltage. However, Ti4+/Nb5+ has a 3d/4d empty orbital that leads to a lower electronic conductivity, which limits its practical application. Therefore, reasonable design and adjustment of an effective electron/ion transfer path is the key to the realization of high-performance anode material, which is of great significance to improve the multiplier performance and cycle life for lithium-ion batteries. In this work, we employ a facile electrospinning and subsequent hydrogenation process to synthesize one-dimensional TiNb 24 O 62 (H-TNO) nanowires with oxygen vacancies. The rapid Li+ diffusion path and high Li+ diffusion coefficient are achieved by nano engineering, besides, hydrogen treatment brings oxygen vacancy to improve the electronic conductivity, together with providing more Li+ active sites for TNO materials. As a result, the as-prepared H-TNO-1h (treatment with 1 h) electrode delivers a high reversible specific capacity (305.2 mAh g−1 at 0.1 A g−1), safer working voltage (~ 1.7 V vs. Li/Li +), high initial Coulombic efficiency (91.9%), excellent rate properties (180.5 mAh g−1 at 5 A g−1) and superior cycle stability, making it become one of the best choices in titanium niobium electrode material used for lithium-ion batteries. One-dimensional TiNb 24 O 62 nanowire with oxygen vacancy (H-TNO) is achieved by simple electrostatic spinning and subsequent hydrogenation process. The galvanostatic intermittent titration technique and pseudocapacitive contribution analysis prove that the as-prepared H-TNO has excellent electrochemical kinetic, resulting in admirable rate performance and cyclic stability. [Display omitted] [ABSTRACT FROM AUTHOR]