Porous CuO@C composite as high-performance anode materials for lithium-ion batteries. Issue 33 (10th August 2020)

• Record Type: Journal Article
• Authors: Xu, Yang; Chu, Kainian; Li, Zhiqiang; Xu, Shikai; Yao, Ge; Niu, Ping; Zheng, Fangcai
• Is Part Of: Dalton transactions. Volume 49:Issue 33(2020)
• Page Start: 11597
• Page End: 11604
• Publication Date: 2020-08-10
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d0dt02493g
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : The in situ formation of a carbon matrix can confine the growth of CuO nanoparticles, which can provide more exposed active sites for electrochemical reactions. Abstract : Though carbon matrices could effectively improve the electrical conductivity and accommodate the volume expansion of CuO-based anode materials for lithium ion batteries (LIBs), achieving an optimized utilization ratio of the active CuO component remains a big challenge. In this work, we developed a metal–organic framework (MOF)-derived strategy to synthesize ultrafine CuO nanoparticles embedded in a porous carbon matrix (CuO@C). Benefiting from its unique structure, the resulting CuO@C exhibits a high reversible capacity of 1024 mA h g −1 at 100 mA g −1 after 100 cycles and a long-term cycling stability with a reversible capacity of 613 mA h g −1 at 500 mA g −1 over 700 cycles. The outstanding Li-storage performances can be attributed to its porous carbon matrix and ultrafine CuO nanoparticles with more exposed active sites for electrochemical reactions.