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ICCAS OpenIR  > 分子纳米结构与纳米技术实验室  > 期刊论文
题名: In-Situ-Grown Mg(OH)(2)-Derived Hybrid alpha-Ni(OH)(2) for Highly Stable Supercapacitor
作者: Xie, Mingjiang1; Duan, Shuyi1, 2, 3; Shen, Yu1; Fang, Kai1; Wang, Yongzheng1; Lin, Ming4; Guo, Xuefeng1
刊名: ACS ENERGY LETTERS
发表日期: 2016-10-01
卷: 1, 期:4, 页:814-819
收录类别: SCI
英文摘要: As one of the most promising candidates for supercapacitor electrodes, transition metal hydroxides usually suffer from the quick decay in capacity during cycling, mainly caused by the decrease of electroactive surface area resulting from the instability of microstructure/morphology upon fast and repeated charging/discharging. Herein, we fabricated a structure-stable Ni(OH)(2) grown on Ni foam via in situ ion-exchange reaction with Mg(OH)(2) as sacrificial substrate and effective dopant. The obtained hybrid Ni(OH), possesses nanosheet morphology, large surface area (220 m(2)/g) and achieves an unprecedented cycling stability with a 95% retention after 10 000 cycles. The asymmetric supercapacitors with the hybrid Ni(OH)(2) exhibit superior supercapacitive performances with large capacity of 167 F/g and maximum energy density of 57.9 Wh/kg at power density of 1.58 kW/kg. Even at a standard power density of 4.0 kW/kg, a high energy density of 49.6 Wh/kg was achieved, making the hybrid Ni(OH)(2) a promising candidate for practical supercapacitor devices.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/36336
Appears in Collections:分子纳米结构与纳米技术实验室_期刊论文

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作者单位: 1.Nanjing Univ, Sch Chem & Chem Engn, Key Lab Mesoscop Chem MOE, Nanjing 210093, Jiangsu, Peoples R China
2.Chinese Acad Sci, Key Lab Mol Nanostruct & Nanotechnol, Inst Chem, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China
4.Inst Mat Res & Engn, 2 Fusionopolis Way,Innovis 08-03, Singapore 138634, Singapore
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