CuO微米梭的制备及其电化学性能研究

尽管各种各样的CuO纳米结构已被广泛应用于锂离子电池负极材料的研究,但将CuO微米梭作为锂离子电池负极材料却鲜有报道. 运用简单的溶剂热法制备大量的CuO微米梭,并用作锂离子电池负极材料. 实验表明,CuO微米梭在电流密度为100 mA g-1下充放电循环100次后,放电容量依然保持在484 mAh g-1. CuO微米梭优异的电化学性能归功于其独特的梭形结构. 这种结构在锂离子电池充放电过程中可以缩短锂离子和电子的传输距离,缓解体积膨胀效应.

Study of Preparation and Electrochemical Property of CuO Micro-Shuttles

Though lots of various CuO nanostructures have been extensively investigated as anode materials for lithium ion bat-teries ( LIBs) ,there are few reports on the application of CuO micro-shuttles as anode materials for LIBs. In this article, scalable synthesis of CuO micro-shuttles is achieved through a facile solvothermal process. When investigated as anode materials for LIBs, the CuO micro-shuttles deliver a high discharge capacity of 484 mAh g-1 over 100 cycles at a current density of 100 mA g-1 . The improved electrochemical performance can be attributed to its unique shuttle-like structures, which largely reduce the diffusion path of lithium ions and electrons, and also buffer volume expansion during the charge/discharge processes.