Cubic CuCo₂O₄ microspheres with FeO nanowires link as free-standing anode for high-performance lithium ion batteries

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• 作者：Jianliang Cheng ; Xinhai Li ; ^{xinhaili_csu@126.com" class="auth_mail" title="E-mail the corresponding author} ; Zhixing Wang ; Huajun Guo ; Wenjie Peng ; Qiyang Hu
• 关键词：D. Transition metal oxide ; Lithium ion battery ; Anode ; Microsphere ; Hybrid
• 刊名：Ceramics International
• 出版年：2016
• 出版时间：1 February 2016
• 年：2016
• 卷：42
• 期：2
• 页码：2871-2875
• 全文大小：1484 K

文摘

Transition metal oxides show great potential in the area of energy storage. However, these materials suffer from structural damage, resulting in poor cycle performance. In this work, a novel structure, CuCo₂O₄ microspheres with FeO nanowires link on Ni foam is prepared and directly used as binder- and conductive agent-free anode for LIBs. In this construction, the CuCo₂O₄ is the main active material and the FeO nanowires have good mechanical adhesion with Ni substrate and CuCo₂O₄ microspheres. With such predominant design, this composite shows good electrochemical performance. It delivers a reversible capacity of 1258 mA h g⁻¹ and maintains 92.3% capacity retention at 100 mA g⁻¹. Even performed at high rate, it also possesses good rate capability, exhibiting 526 mA h g⁻¹ at 4000 mA g⁻¹. Furthermore, this smart structure possesses good electrochemical kinetics.