期刊
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
卷 42, 期 2, 页码 853-862出版社
WILEY
DOI: 10.1002/er.3862
关键词
cobalt oxide; electrodeposition; lithium ion batteries; nitrogen-doped carbon nanotubes; oxygen evolution reaction
资金
- China Postdoctoral Science Foundation [2017 M610764]
- University of Science and Technology Beijing
Transition metal oxides (TMOs) have been extensively explored as promising electrode materials for electrochemical energy storage and catalysis. However, TMOs intrinsically have low electronic conductivity and suffer severe volume change during electrochemical cycling. In this study, we develop an effective strategy to enhance conductivity and buffer volume changes of TMOs, in which networked nitrogen-doped carbon nanotubes (N-CNTs) are incorporated into Co3O4 nanosheets system. Based on the whole mass of Co3O4 and N-CNT, the composites can maintain a stable discharge capacity of similar to 590 mAh g(-1) after 80 cycles at a current density of 0.5 A g(-1). Moreover, the composites also exhibit greatly enhanced catalysis ability towards oxygen evolution reaction (OER), ie, small Tafel slope of 84 mV dec(-1), low overpotential of 310 mV at a current density of 10 mA cm(-2), and almost no activity decay throughout 30-hour continuous operation. This study lays a new route for smartly designing advanced electrode materials for energy storage and electrochemical catalysis.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据