MXene/银纳米线超级电容器电极材料的电化学性能

doi:10.12028/j.issn.2095-4239.2019.0072

储能科学与技术 ›› 2019, Vol. 8 ›› Issue (6): 1126-1131.doi: 10.12028/j.issn.2095-4239.2019.0072

MXene/银纳米线超级电容器电极材料的电化学性能

孟奇, 刘晓辉, 孙铭泽, 王其洋, 毕红

安徽大学化学化工学院, 安徽合肥 230601

收稿日期:2019-04-28 修回日期:2019-05-29 出版日期:2019-11-01 发布日期:2019-05-29
通讯作者: 王其洋,副教授,研究方向为天然高分子材料,E-mail:qywang@ahu.edu.cn;毕红,教授,研究方向为纳米碳材料,E-mail:bihong@ahu.edu.cn。
作者简介:孟奇(1996-),女,硕士研究生,研究方向为超级电容器电极材料,E-mail:15205696494@163.com
基金资助:
安徽省科技攻关项目（1604a0902178）。

Elecrochemical performance of MXene/silver nanowire supercapacitor electrode material

MENG Qi, LIU Xiaohui, SUN Mingze, WANG Qiyang, BI Hong

School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, Anhui, China

Received:2019-04-28 Revised:2019-05-29 Online:2019-11-01 Published:2019-05-29

摘要/Abstract

摘要： 新型二维材料MXene具有比表面积大和导电性好等优点被广泛应用于超级电容器上，而银纳米线（AgNw）具有优异的导电性，是一种良导体。采用简单的混合自组装法制备出MXene/Ag Nw复合薄膜。使用X射线衍射仪（XRD）、傅里叶红外光谱仪（FT-IR）、扫描电镜（SEM）及能谱仪（EDS）对其进行物像分析，利用电化学工作站对复合材料的电化学性能进行探究，结果表明当Ag Nw掺杂量为5%时电化学性能最好；在扫描速率为10 mV·s^-1时，比电容可达379.06 F·g^-1；并且电极具有良好的循环稳定性，恒电流10 A·g^-1下，1000次充放电后电容保持率达98.20%。

关键词: MXene, 银纳米线, 电极材料, 超级电容器, 循环稳定性

Abstract: MXene with large specific surface area and good conductivity properties as a new 2D material has been explored as electrode materials for supercapacitor. Silver nanowire (Ag Nw) has been attracting more and more attention because of their intrinsic optical, thermal and electric properties. In this research, MXene/Ag Nw composites have been fabricated by a simple and "green" filtration selfassembly method. Their structure and morphology were analyzed with scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectrometer (FT-IR), energy dispersive spectrometer (EDS) as well as electrochemical properties tested on electrochemical workstation. The synergetic effect of MXene and silver nanowire constructed a three dimensional (3D) conductive network and enlarged the distance of MXene layers. The results revealed that MXene/Ag Nw composites exhibited a high specific capacitance (379.06 F·g^-1 at 10 mV·s^-1) when the concentration of Ag Nw is 5% which is higher than pure MXene (176.95 F·g^-1) and long-term cycling stability (98.20% capacitance retention over 1000 cycles). In a word, the MXene/Ag Nw composite films have exhibited an improved electrochemical performance when used as electrode materials for supercapacitor.

Key words: MXene, silver nanowire, electrode materials, supercapacitor, cycling stability

中图分类号:

TM123

孟奇, 刘晓辉, 孙铭泽, 王其洋, 毕红. MXene/银纳米线超级电容器电极材料的电化学性能[J]. 储能科学与技术, 2019, 8(6): 1126-1131.

MENG Qi, LIU Xiaohui, SUN Mingze, WANG Qiyang, BI Hong. Elecrochemical performance of MXene/silver nanowire supercapacitor electrode material[J]. Energy Storage Science and Technology, 2019, 8(6): 1126-1131.

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MXene/银纳米线超级电容器电极材料的电化学性能

Elecrochemical performance of MXene/silver nanowire supercapacitor electrode material

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