NiS2纳米片的制备及其在非对称超级电容器中的应用

doi:10.13208/j.electrochem.170103

电化学（中英文） ›› 2017, Vol. 23 ›› Issue (6): 667-674. doi: 10.13208/j.electrochem.170103

NiS₂纳米片的制备及其在非对称超级电容器中的应用

王元有* ,刘亚楠，金党琴

扬州工业职业技术学院, 扬州 225127

收稿日期:2017-01-03 修回日期:2017-02-10 出版日期:2017-12-28 发布日期:2017-02-13
通讯作者: 王元有 E-mail:wangyy@ypi.edu.cn
基金资助:
省级青蓝工程|项目(2016-15)、校级重点课题（No. 2016xjzk001）、江苏高校品牌建设工程资助项目（No. PPZY2015B180）及2017年江苏省高等学校优秀科技创新团队项目（苏教科[2017]6号）资助

Preparation of NiS₂nanosheet and its application in asymmetric supercapacitor

Wang Yuan-you*, Liu Ya-nan, JIN Dang-qin

Department of Chemical Engineering, Yangzhou Polytechnic Institute, Yangzhou, 225127

Received:2017-01-03 Revised:2017-02-10 Published:2017-12-28 Online:2017-02-13
Contact: Wang Yuan-you E-mail:wangyy@ypi.edu.cn

摘要/Abstract

摘要：

本文采用牺牲模板法，以Ni(OH)₂作为前驱体制备NiS₂. 通过对NiS₂进行XRD、EDS、BET、SEM及TEM等表征来研究NiS₂的元素组成及结构形貌. SEM及TEM结果显示前驱体及NiS₂均为纳米片结构. 电化学测试结果表明NiS₂存在着优秀的电容性能，在电流密度为1 A·g^-1时，NiS₂比电容能够达到1067.3 F·g^-1，同时具有高的倍率特性. 为了进一步探究NiS₂作为电活性材料的实用性，以NiS₂作为阳极材料，活性炭（AC）作为阴极组装成非对称超级电容器，在功率密度为0.8 kW·kg^-1，能量密度高达38.4 Wh·kg^-1，并且在3000次恒流充放电后，比电容依然保持93.7%.

关键词: 牺牲模板法, NiS₂纳米片, 非对称电容器

Abstract: In this work, the NiS₂nanosheets have been synthesized using Ni(OH)₂ as a precursor through a sacrificial template method. The microstructure and chemical composition of as-prepared NiS₂were characterized by XRD, EDS, BET, SEM and TEM techniques. The results showed that both Ni(OH)₂ and NiS₂ were composed of nanoplates. The electrochemical tests revealed that NiS₂ exhibited the high specific capacitance of 1067.3 F•g^-1 at a current density of 1 A•g^-1 and excellent rate performance. Furthermore, in order to evaluate the practical application of NiS₂, an asymmetric supercapacitor, NiS₂ as the positive electrode and AC as the negative electrode, displayed high energy density of 38.4 Wh•kg^-1 with a power density of 0.8 kW•kg^-1. Meanwhile, the asymmetric supercapacitor showed a superior cycling performance and 93.7% of the specific capacitance was retained after 3000 charge-discharge cycles.

Key words: sacrificial template method, NiS₂, Asymmetric supercapacitor

王元有, 刘亚楠, 金党琴. NiS₂纳米片的制备及其在非对称超级电容器中的应用[J]. 电化学（中英文）, 2017, 23(6): 667-674.

Wang Yuan-you, Liu Ya-nan, JIN Dang-qin. Preparation of NiS₂nanosheet and its application in asymmetric supercapacitor[J]. Journal of Electrochemistry, 2017, 23(6): 667-674.

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链接本文: https://electrochem.xmu.edu.cn/CN/10.13208/j.electrochem.170103

https://electrochem.xmu.edu.cn/CN/Y2017/V23/I6/667

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NiS₂纳米片的制备及其在非对称超级电容器中的应用

Preparation of NiS₂nanosheet and its application in asymmetric supercapacitor

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