Abstract High-density CuCo2O4 nanosheets are grown on Ni foam using electrodeposition followed by air annealing for a Li-ion battery anode. The anode exhibits a high discharge capacity of 1244 mAh/g at 0.1 A/g (82% coulombic efficiency) and excellent high-rate performance with 95% capacity retention (1100 mAh/g after 200 cycles at 1 A/g). The outstanding battery performance of the CuCo2O4 anode is attributed to its binder-free direct contact to the current collector and high-density nanosheet morphology. The present experimental findings demonstrate that the electrodeposited binder-free CuCo2O4 material may serve as a safe, low-cost, long-cycle life anode for Li-ion batteries.

中文翻译：

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高密度CuCo2O4纳米片的简便电沉积作为高性能锂离子电池负极材料

摘要 高密度 CuCo2O4 纳米片通过电沉积在泡沫镍上生长，然后空气退火用于锂离子电池负极。负极在 0.1 A/g（82% 库仑效率）下表现出 1244 mAh/g 的高放电容量和具有 95% 容量保持率（在 1 A/g 下循环 200 次后为 1100 mAh/g）的优异高倍率性能。CuCo2O4 负极出色的电池性能归因于其与集电器的无粘合剂直接接触和高密度纳米片形态。目前的实验结果表明，电沉积的无粘合剂 CuCo2O4 材料可作为安全、低成本、长循环寿命的锂离子电池负极。