Organic vanadium oxy-acetylacetonate as electro-active anode material with high capacity and rate performance for lithium-ion batteries
Vanadium oxy-acetylacetonate (VO(acac)2) was originally explored as an organic anode material for lithium-ion batteries (LIBs) with high capacity and rate performance. Specifically, the prepared VO(acac)2 has delivered capacity of 620 mA h g−1 at current density of 100 mA g−1 with nearly 100% coulombic efficiency during cycling. Furthermore, the cell exhibits good ultralong cycle stability and performs capacity of 508.5 mA h g−1 after 1000 cycles under 1000 mA g−1. Therefore, in the absence of any structure manipulation or conductive additives, the pristine VO(acac)2 shows high promises as advanced anode candidate of high capacity for LIBs.
The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China under Grant Nos. 91634111 and 51774261, and the Sino-German Joint Project from the National Natural Science Foundation of China under Grant No. 51761135108.
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