期刊
ACS APPLIED MATERIALS & INTERFACES
卷 7, 期 39, 页码 21703-21711出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b07233
关键词
NiO-CoO/carbon fiber nanobrushes; NiO-CoO nanoneedles; NiO/carbon fiber nanobrushes; carbon fibers; solvents; lithium ion batteries
资金
- National Natural Science Foundation of China [21373081, 51404103, 61376073, 51304248]
- Hunan Provincial Natural Science Foundation of China [14JJ3067]
- China Postdoctoral Science Foundation [2013M531800, 2014T70783]
- Program for Shenghua Overseas Talents from Central South University
- Self-established Project of State Key Laboratory for Power Metallurgy
NiO-CoO nanoneedles are grown on carbon fibers by a solvothermal strategy to form nanobrushes. The density of nanobrushes can be easily controlled by altering the solvents. The synthesis mechanism of NiO-CoO/carbon fiber nanobrushes is investigated by the time-dependent experiments in detail. As anodes for lithium ion batteries, the NiO-CoO/carbon fiber nanobrushes synthesized in ethanol show excellent properties with a discharge capacity of 801 mA h g(-1) after 200 cycles at a current density of 200 mA g(-1). The improvement can be ascribed to the carbon fibers as the highway for electrons and the interspace between NiO-CoO nanoneedles to accommodate the volume change and maintain the structural stability.
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