Controllable Synthesis of Copper Oxide-Carbon Core-Shell Nanowire Arrays and Their Application for Electrochemical Energy StorageReportar como inadecuado


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


Controllable Synthesis of Copper Oxide-Carbon Core-Shell Nanowire Arrays and Their Application for Electrochemical Energy Storage - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

1

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

2

School of Applied Science, Harbin University of Science and Technology, Harbin 150080, China





*

Authors to whom correspondence should be addressed.



Academic Editors: Xifei Li and Xueliang Andy Sun

Abstract Rational design-fabrication of integrated porous metal oxide arrays is critical for 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 to 150 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. View Full-Text

Keywords: core-shell structure; anode; nanowire arrays; copper oxides; lithium ion batteries core-shell structure; anode; nanowire arrays; copper oxides; lithium ion batteries





Autor: Jiye Zhan 1, Minghua Chen 2,* and Xinhui Xia 1,*

Fuente: http://mdpi.com/



DESCARGAR PDF




Documentos relacionados