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The anode‐cathode interplay is an important but rarely considered factor that initiates the degradation of aqueous zinc ion batteries (AZIBs). Herein, to address the limited cyclability issue of V‐based AZIBs, Al2(SO4)3 is proposed as decent electrolyte additive to manipulate OH−‐mediated cross‐communication between Zn anode and NaV3O8 ⋅ 1.5H2O (NVO) cathode. The hydrolysis of Al3+ creates a pH≈0.9 strong acidic environment, which unexpectedly prolongs the anode lifespan from 200 to 1000 h. Such impressive improvement is assigned to the alleviation of interfacial OH− accumulation by Al3+ adsorption and solid electrolyte interphase formation. Accordingly, the strongly acidified electrolyte, associated with the sedated crossover of anodic OH− toward NVO, remarkably mitigate its undesired dissolution and phase transition. The interrupted OH−‐mediated communication between the two electrodes endows Zn||NVO batteries with superb cycling stability, at both low and high scan rates. [ABSTRACT FROM AUTHOR]

Bi2S3 is a promising negative electrode material for lithium storage owing to its high theoretical capacity. Nevertheless, the capacity of Bi2S3 decays very rapidly upon Li cycling. Here, Bi2S3 and Bi2S3/C were successfully synthesized by a novel route. Sulfur powder as a kind of sulfur source reacted with a metal organic framework based on bismuth and trimesinic acid―Bi(BTC)(DMF)·DMF·(CH3OH)2 (denoted as Bi-BTC). Trimesic acid further acted as a new type of carbon source to synthesize the Bi2S3/C composite. The particle sizes of the composite were smaller than those of pure Bi2S3, showing the suppression of Bi2S3 aggregation. Charge–discharge performance and cyclability for both the Bi2S3 and Bi2S3/C composites in lithium-ion batteries were measured. Specifically, the specific capacities of Bi2S3/C and Bi2S3 reached 765 and 603 mA h g−1, respectively, at 100 mA g−1 after 100 cycles. Because of its high capacity and excellent cycle life, Bi2S3/C is a promising energy storage material. [ABSTRACT FROM AUTHOR]

The anode-cathode interplay is an important but rarely considered factor that initiates the degradation of aqueous zinc ion batteries (AZIBs). Herein, to address the limited cyclability issue of V-based AZIBs, Al 2 (SO 4 ) 3 is proposed as decent electrolyte additive to manipulate OH - -mediated cross-communication between Zn anode and NaV 3 O 8  ⋅ 1.5H 2 O (NVO) cathode. The hydrolysis of Al 3+ creates a pH≈0.9 strong acidic environment, which unexpectedly prolongs the anode lifespan from 200 to 1000 h. Such impressive improvement is assigned to the alleviation of interfacial OH - accumulation by Al 3+ adsorption and solid electrolyte interphase formation. Accordingly, the strongly acidified electrolyte, associated with the sedated crossover of anodic OH - toward NVO, remarkably mitigate its undesired dissolution and phase transition. The interrupted OH - -mediated communication between the two electrodes endows Zn||NVO batteries with superb cycling stability, at both low and high scan rates., (© 2022 Wiley-VCH GmbH.)

Silicon-based materials that have higher theoretical specific capacity than other conventional anodes, such as carbon materials, Li 2 TiO 3 materials and Sn-based materials, become a hot topic in research of lithium-ion battery (LIB). However, the low conductivity and large volume expansion of silicon-based materials hinders the commercialization of silicon-based materials. Until recent years, these issues are alleviated by the combination of carbon-based materials. In this review, the preparation of Si/C materials by different synthetic methods in the past decade is reviewed along with their respective advantages and disadvantages. In addition, Si/C materials formed by silicon and different carbon-based materials is summarized, where the influences of carbons on the electrochemical performance of silicon are emphasized. Lastly, future research direction in the material design and optimization of Si/C materials is proposed to fill the current gap in the development of efficient Si/C anode for LIBs., (© 2021 Wiley-VCH GmbH.)

Bi 2 S 3 is a promising negative electrode material for lithium storage owing to its high theoretical capacity. Nevertheless, the capacity of Bi 2 S 3 decays very rapidly upon Li cycling. Here, Bi 2 S 3 and Bi 2 S 3 /C were successfully synthesized by a novel route. Sulfur powder as a kind of sulfur source reacted with a metal organic framework based on bismuth and trimesinic acid-Bi(BTC)(DMF)·DMF·(CH 3 OH) 2 (denoted as Bi-BTC). Trimesic acid further acted as a new type of carbon source to synthesize the Bi 2 S 3 /C composite. The particle sizes of the composite were smaller than those of pure Bi 2 S 3 , showing the suppression of Bi 2 S 3 aggregation. Charge-discharge performance and cyclability for both the Bi 2 S 3 and Bi 2 S 3 /C composites in lithium-ion batteries were measured. Specifically, the specific capacities of Bi 2 S 3 /C and Bi 2 S 3 reached 765 and 603 mA h g -1 , respectively, at 100 mA g -1 after 100 cycles. Because of its high capacity and excellent cycle life, Bi 2 S 3 /C is a promising energy storage material.