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题名: A high mass loading electrode based on ultrathin Co3S4 nanosheets for high performance supercapacitor
其他题名: A high mass loading electrode based on ultrathin Co3S4nanosheets for high performance supercapacitor
作者: Xin, BB; Zhao, YQ(赵永青); Xu, CL(徐彩玲)
收录类别: SCIE ; EI
出版日期: 2016-08
刊名: JOURNAL OF SOLID STATE ELECTROCHEMISTRY
卷号: 20, 期号:8, 页码:2197-2205
出版者: SPRINGER
出版地: NEW YORK
英文摘要: There is a growing need for the electrode with high mass loading of active materials, where both high energy and high power densities are required, in current and near-future applications of supercapacitor. Here, an ultrathin Co3S4 nanosheet decorated electrode (denoted as Co3S4/NF) with mass loading of 6 mg cm(-2) is successfully fabricated by using highly dispersive Co3O4 nanowires on Ni foam (NF) as template. The nanosheets contained lots of about 3 similar to 5 nm micropores benefiting for the electrochemical reaction and assembled into a three-dimensional, honeycomb-like network with 0.5 similar to 1 mu m mesopore structure for promoting specific surface area of electrode. The improved electrochemical performance was achieved, including an excellent cycliability of 10,000 cycles at 10 A g(-1) and large specific capacitances of 2415 and 1152 F g(-1) at 1 and 20 A g(-1), respectively. Impressively, the asymmetric supercapacitor assembled with the activated carbon (AC) and Co3S4/NF electrode exhibits a high energy density of 79 Wh kg(-1) at a power density of 151 W kg(-1), a high power density of 3000 W kg(-1) at energy density of 30 Wh kg(-1) and 73 % retention of the initial capacitance after 10,000 charge-discharge cycles at 2 A g(-1). More importantly, the formation process of the ultrathin Co3S4 nanosheets upon reaction time is investigated, which is benefited from the gradual infiltration of sulfide ions and the template function of ultrafine Co3O4 nanowires in the anion-exchange reaction.
关键词: Supercapacitors ; High mass loading ; Ultrathin nanosheets ; Co3S4 ; Superior cycling stability
作者部门: [Xin, Binbin ; Zhao, Yongqing ; Xu, Cailing] Lanzhou Univ, Key Lab Nonferrous Met Chem & Resources Utilizat, State Key Lab Appl Organ Chem, Minist Educ,Coll Chem & Chem Engn,Lab Special Fun, Lanzhou 730000, Peoples R China
通讯作者: Xu, CL (reprint author), Lanzhou Univ, Key Lab Nonferrous Met Chem & Resources Utilizat, State Key Lab Appl Organ Chem, Minist Educ,Coll Chem & Chem Engn,Lab Special Fun, Lanzhou 730000, Peoples R China.
学科分类: Electrochemistry
文章类型: Article
所属项目编号: Natural Science Foundation of China (NNSFC) [21503102] ; Fundamental Research Funds for the Central University [lzujbky-2014-189] ; Science and Technology Program of Gansu Province of China [145RJZA176] ; National College Students' Innovative Entrepreneurial Training Program of Lanzhou University [201510730096]
所属项目名称: 国家自然科学基金项目 ; 中央高校基本科研业务费专项资金 ; 甘肃省自然科学基金计划
项目资助者: NSFC ; LZU ; GSSTD
语种: 英语
DOI: 10.1007/s10008-016-3225-4
ISSN号: 1432-8488
WOS记录号: WOS:000380120600011
EI记录号: 20161902362344
IR记录号: WOS:000380120600011
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/180510
Appears in Collections:化学化工学院_期刊论文

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Recommended Citation:
Xin, BB,Zhao, YQ,Xu, CL. A high mass loading electrode based on ultrathin Co3S4 nanosheets for high performance supercapacitor[J]. JOURNAL OF SOLID STATE ELECTROCHEMISTRY,2016,20(8):2197-2205.
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