ZnO Nanorods Grown Directly on Copper Foil Substrate as a Binder-Free Anode for High Performance Lithium-Ion Batteries
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Date
2016-09-06
Authors
Huang, Lanyan
Wang, Xin
Yin, Fuxing
Zhang, Yongguang
Gao, Jinwei
Liu, Junming
Zhou, Guofu
Bakenov, Zhumabay
Journal Title
Journal ISSN
Volume Title
Publisher
International Journal of ELECTROCHEMICAL SCIENCE. www.electrochemsci.org
Abstract
ZnO nanorods directly grown on copper foil substrate were obtained via hydrothermal method without using templates. Structure and morphology of the as-prepared ZnO nanorods were characterized by X-ray diffraction, scanning electron microscopy and high-resolution transmission electron microscopy. The ZnO nanorods on copper foil (ZnO@CF) exhibited remarkably enhanced performance as anode for lithium batteries with the initial discharge capacity of 1236 mAh g-1 and a capacity of 402 mAh g-1 retained over 100 cycles at a current density of 200 mA g-1. The ZnO@CF anode demonstrated an excellent rate capability, delivering a reversible capacity of 390 mAh g-1 at 1500 mA g-1. This superior performance of the ZnO@CF anode is believed to be due to the unique structure of this binder-free anode, favoring mass and charge transfer at its interface with the electrolyte, effectively reducing the Li-ions diffusion paths and providing conditions to accommodate the anode volume variations upon charge-discharge cycling.
Description
Keywords
Lithium ion battery, Anode, ZnO nanorods, Binder-free, Research Subject Categories::NATURAL SCIENCES::Chemistry::Analytical chemistry::Electrochemistry
Citation
Lanyan Huang, Xin Wang, Fuxing Yin, Yongguang Zhang, Jinwei Gao, Junming Liu, Guofu Zhou and Zhumabay Bakenov (2016) ZnO Nanorods Grown Directly on Copper Foil Substrate as a Binder-Free Anode for High Performance Lithium-Ion Batteries. doi: 10.20964/2016.10.60