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A facile microwave solvothermal reaction is performed to synthesize novel LiMn 0.25 Ni 0.5 Co 0.25 O 2 ternary layered oxide with 1 D fusiform morphology. Scanning electron microscopy (SEM) images show that material synthesized at 800 °C well keeps the fusiform morphology of the precursor with a particle size of 100–300 nm. All the three elements are perfectly dispersed and a well-formed layered structure is obtained. Thus, good electrochemical performances with high initial discharge capacity of 183 mAh g −1 is reached. Furthermore, high discharge capacity of 154 mAh g −1 is remained with a capacity retention of 84.2% after 100 cycles at 20 mA g −1 . Excellent rate capability is also obtained with high discharge capacity of 99 mAh g −1 at 2000 mA g −1 . It seems such facile microwave solvothermal method is one of the most promising candidates for preparing ternary layered oxides with excellent electrochemical properties as cathode material for lithium ion batteries. [ABSTRACT FROM AUTHOR]

Carbonate is recently studied as anode material for lithium ion battery due to its relatively high capacity compared to relative oxides. In order to improve the time-efficiency of synthesis, an ultrafast solvothermal process assisted with microwave is carried out to obtain well-constructed Mn 0.8 Co 0.2 CO 3 /graphene composite as anode material for lithium ion batteries. The as-prepared Mn 0.8 Co 0.2 CO 3 /graphene composite with a graphene amount of 17.5 wt% exhibits a morphology of cubic particles in graphene without any impurity. Mn 0.8 Co 0.2 CO 3 /graphene delivers high initial charge capacities of 1033 mAh g −1 . And after 120 cycles, charge/discharge capacities of 737/735 mAh g −1 are maintained at 0.2 A g −1 . Even at 2 A g −1 , the composite can still deliver high charge/discharge capacities of 500/501 mAh g −1 . It is promising to obtain carbonate/graphene anode materials rapidly through such ultrafast solvothermal process assisted by microwave for application. [ABSTRACT FROM AUTHOR]

Titanium dioxide (TiO 2) as one of the anode materials has been studied intensively by virtue of its high safety, cheap price, environmental benignancy and high lithium insertion potential. However, the sluggish Li+ diffusivity and limited conductivity inevitably block the various applications of TiO 2 in LIBs. Hence, in this work, TiO 2 hierarchical hollow tubes modified with disordered carbon (HT-TiO 2 /C) were synthesized. The TiO 2 nanoparticles of HT-TiO 2 /C are capable to shorten the length of Li+ diffusivity. The micro-nano structure takes both advantages of nanoscale materials (the short length of Li+ diffusivity) and micro-materials (the great structural stability). In addition, the carbon modifying layer improves the conductivity. Benefiting from the unique structural features, HT-TiO 2 /C shows excellent rate performance (105.5 mA h g−1 at current rate of 20 C) and distinguished long-cycle performance (88.4 mA h g−1 after 500 cycles at 20 C with a capacity retention of 88.1%). • Carbon-modified hierarchical hollow tubes composed of TiO 2 nanoparticles was synthesized. • Micro-nano HT-TiO 2 take both advantages of nano-material and micro-material. • The hollow tubes of HT-TiO 2 allow a large Li+ flux. • 4. HT-TiO 2 /C shows excellent rate performances (105.5 mA h g−1 at 20 C). [ABSTRACT FROM AUTHOR]