二维多层状Ti3C2Tx-MXene/聚吡咯纳米线复合材料的制备及电容性能研究

陈  露; 简  选; 何  敏; 张咪咪; 陈晓蝶; 高楼军; 梁镇海

doi:10.13208/j.electrochem.181118

电化学 >

2019 , Vol. 25 >Issue 2: 280 - 287

DOI: https://doi.org/10.13208/j.electrochem.181118

研究论文

二维多层状Ti₃C₂T_x-MXene/聚吡咯纳米线复合材料的制备及电容性能研究

陈露 ,
简选 ,
何敏 ,
张咪咪 ,
陈晓蝶 ,
高楼军 ,
梁镇海

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1. 延安大学化学与化工学院，陕西省化学反应工程重点实验室，陕西延安 716000； 2. 太原理工大学化学化工学院，洁净化工研究所，山西太原 030024

收稿日期: 2018-12-04

修回日期: 2019-01-20

网络出版日期: 2019-01-25

基金资助

延安大学博士科研启动基金(No. YDBK2017-28)、延安大学校级科研项目(No. YDQ2018-16)及陕西省大学生创新创业训练项目(No. 201820053)资助

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Preparation and Capacitive Property of Two-Dimensional Multilayer Ti₃C₂T_x-MXene/PPy-NW Composite Material

CHEN Lu ,
JIAN Xuan ,
HE Min ,
ZHANG Mi-mi ,
CHEN Xiao-die ,
GAO Lou-jun ,
LIANG Zhen-hai

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1. Shaanxi Key Laboratory of Chemical Reaction Engineering, College of Chemistry and Chemical Engineering, Yan’an University, Yan’an, Shaanxi Province, 716000, P. R. China; 2. Clean Chemical Research Institute, College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, Shaanxi Provience, 030024, P. R. China

Received date: 2018-12-04

Revised date: 2019-01-20

Online published: 2019-01-25

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摘要

本文以体相材料MAX(Ti₃AlC₂)为基底，采用氢氟酸刻蚀法得到二维多层状Ti₃C₂T_x-MXene，将一维聚吡咯纳米线(polypyrrole nanowires，PPy-NW)与二维多层状Ti₃C₂T_x-MXene相结合，成功地制备出Ti₃C₂T_x-MXene/PPy-NW复合电极材料. 并分别利用扫描电子显微镜(scanning electron microscope，SEM)、X-射线衍射(X-ray diffraction，XRD)、傅里叶变换红外光谱(fourier transform infrared spectroscopy，FTIR)及X射线光电子能谱 (X-ray photoelectron spectroscopy，XPS)对其进行了形貌和结构表征. 最后通过电化学测试表明，二维多层状Ti₃C₂T_x-MXene/PPy-NW复合电极材料在扫描速率为10 mV·s^-1时比电容可达374 F·g^-1，高于纯PPy-NW（304 F·g^-1），当扫描速率增加至200 mV·s^-1时，仍可保留原比电容值的72.4%，展现出良好的倍率性能. 而且在电流密度为5 A·g^-1下经过2000次的循环伏安实验，其电容保持率可达91.6%，具有良好的循环稳定性. 总之，二维多层状Ti₃C₂T_x-MXene和一维PPy-NW的复合有效地提升了电极材料的电容性能，在电化学能源储存方面有着巨大的应用前景.

关键词： 二维多层结构; Ti₃C₂T_x-MXene; 聚吡咯纳米线; 电容性能

本文引用格式

陈露 , 简选 , 何敏 , 张咪咪 , 陈晓蝶 , 高楼军 , 梁镇海 . 二维多层状Ti₃C₂T_x-MXene/聚吡咯纳米线复合材料的制备及电容性能研究[J]. 电化学, 2019 , 25(2) : 280 -287 . DOI: 10.13208/j.electrochem.181118

Abstract

In this paper, the two-dimensional multilayered Ti₃C₂T_x-MXene was obtained by hydrofluoric acid etching method on the bulk phase material MAX(Ti₃AlC₂) substrate. The two-dimensional multilayered Ti₃C₂T_x-MXene/PPy-NW composite electrode materials were successfully prepared by combining the one-dimensional polypyrrole nanowires (PPy-NW) with two-dimensional multilayered Ti₃C₂T_x-MXene. The morphologies and compositions of the synthetic materials were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). Electrochemical tests showed that Ti₃C₂T_x-MXene/PPy-NW composite electrode material could reach 374 F·g^-1 at a scanning rate of 10 mV·s^-1, which is higher than pure PPy-NW (304 F·g^-1). When the scanning rate increased to 200 mV·s^-1, it could still retain 72.4 % of the original specific capacitance value, showing good multiplying performance. Finally, the Ti₃C₂T_x-MXene /PPy-NW composite electrode material still retained good cycling stability even at high current density of 5 A·g^-1 (91.6% capacitance retention after 2000 cycles). In summary, the composite of two-dimensional multilayered Ti₃C₂T_x-MXene and one-dimensional PPy-NW effectively improved the capacitance performance of electrode materials, and had great application prospect in electrochemical energy storage.

Key words： two-dimensional multilayer structure; Ti₃C₂T_x-MXene; polypyrrole nanowires; capacitive property

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