期刊
DALTON TRANSACTIONS
卷 49, 期 31, 页码 10808-10815出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0dt00553c
关键词
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资金
- National Natural Science Foundation of China (NSFC) [21601003]
- Anhui Provincial Natural Foundation [1608085QB34]
- China Postdoctoral Science Foundation [2017M61202]
Although binary metal oxides with high theoretical specific capacities and power densities are widely investigated as promising anode materials for lithium-ion batteries (LIBs), their poor cycling stability and huge volume expansion largely limit their extensive application in practical electrode materials. Herein, we report a facile strategy to synthesize hollow NiCo2O4 nanowires through direct calcination of binary metal-organic frameworks (MOFs) in air. When evaluated as an anode material for LIBs, NiCo2O4 nanowires deliver a reversible capacity of 1310 mA h g(-1) at a current density of 100 mA g(-1) after 100 cycles. Even at a high current density of 1 A g(-1), NiCo2O4 nanowires exhibit long-term cycling stability with a capacity of 720 mA h g(-1) after 1000 cycles. The outstanding lithium-storage performance can be attributed to the unique structures with 1D porous channels, which are beneficial for the fast transfer of Li+ ions and electrolyte and alleviate the strain caused by the volume expansion during cycling processes.
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