期刊
NANOTECHNOLOGY
卷 30, 期 12, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/aafa25
关键词
electrodeposition; carbon coating; pseudocapacitance
资金
- New Century Talent Support Plan of the Ministry of Education of China [2007NCET-07-0723]
- National Natural Science Foundation of China [60936003]
- Aviation Science Foundation of China [2008ZH68002]
Carbon-coated nickel cobaltate on nickel foam (C@NCO@NF) with stable pseudocapacitive lithium storage capacity was prepared via a two-step strategy. NiCo hydroxide was initially grown on Ni foam via electrodeposition. Subsequent glucose soaking and annealing converted the intermediate into C@NCO@NF. Carbon coating could significantly improve the cycling stability and rate performance of the binder-free anode. The C@NCO@NF electrode could stably deliver a reversible capacity of 513 mAh . g(-1) after 500 cycles at a current density of 500 mA . g(-1). It could even stably cycle at a high current density of 5000 mA . g(-1) for 3000 cycles, with a reversible capacity of 115 mAh . g(-1). Kinetic analysis revealed that surface-controlled pseudocapacitance plays a dominant role in the lithium ion storage. Improved electrochemical performance is attributed to the synergetic effect of pseudocapacitance and carbon coating.
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