Controllable Synthesis of Copper Oxide/Carbon Core/Shell Nanowire Arrays and Their Application for Electrochemical Energy Storage

Nanomaterials

Minghua Chen¹  Jiye Zhan²  Xinhui Xia² 

[1] School of Applied Science, Harbin University of Science and Technology, Harbin 150080, China;State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;

关键词: core/shell structure;    anode;    nanowire arrays;    copper oxides;    lithium ion batteries;   

DOI  :  10.3390/nano5041610

来源: DOAJ

【 摘 要 】

Rational design/fabrication of integrated porous metal oxide arrays is criticalfor the construction of advanced electrochemical devices. Herein, we report self-supported CuO/C core/shell nanowire arrays prepared by the combination of electro-deposition and chemical vapor deposition methods. CuO/C nanowires with diameters of ~400 nm grow quasi-vertically to the substrates forming three-dimensional arrays architecture. A thin carbon shell is uniformly coated on the CuO nanowire cores. As an anode of lithium ion batteries, the resultant CuO/C nanowire arrays are demonstrated to have high specific capacity (672 mAh·g−1 at 0.2 C) and good cycle stability (425 mAh·g−1 at 1 C up to150 cycles). The core/shell arrays structure plays positive roles in the enhancement of Li ion storage due to fast ion/electron transfer path, good strain accommodation and sufficient contact between electrolyte and active materials.

【 授权许可】

Unknown