Solvent-Controlled Synthesis of NiO-CoO/Carbon Fiber Nanobrushes with Different Densities and Their Excellent Properties for Lithium Ion Storage.
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.
['Wei|Yuehua|Y|', 'Yan|Feilong|F|', 'Tang|Xuan|X|', 'Luo|Yazi|Y|', 'Zhang|Ming|M|', 'Wei|Weifeng|W|', 'Chen|Libao|L|']
carbon fibers solvents lithium ion batteries NiO/carbon fiber nanobrushes NiO−CoO nanoneedles NiO−CoO/carbon fiber nanobrushes