Journal of Inorganic Materials ›› 2020, Vol. 35 ›› Issue (1): 119-125.DOI: 10.15541/jim20190309

Special Issue: MAX相和MXene材料 2020年能源材料论文精选(二):超级电容器 【虚拟专辑】超级电容器(2020~2021)

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Manganese Dioxide Morphology on Electrochemical Performance of Ti3C2Tx@MnO2 Composites

LI Xue-Lin,ZHU Jian-Feng(),JIAO Yu-Hong,HUANG Jia-Xuan,ZHAO Qian-Nan   

  1. Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Material Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
  • Received:2019-06-26 Revised:2019-07-31 Published:2020-01-20 Online:2019-10-25
  • About author:LI Xue-Lin(1994-), female, PhD candidate. E-mail:lxlsust@outlook.com
  • Supported by:
    National Natural Science Foundation of China(51572158);Graduate Innovation Fund of Shaanxi University of Science and Technology

Abstract:

Ti3C2Tx@MnO2 composites with different morphologies were prepared by liquid-phase coprecipitation and hydrothermal method using Ti3C2Tx@PDA as matrix, KMnO4 as manganese source, CTAB or PEG as surfactant. Effect of MnO2 morphology (δ-MnO2 nanofragments, α-MnO2 nanorods, α-MnO2 nanoflowers and α-MnO2 nanowires) on phase structure and electrochemical performance of Ti3C2Tx was analyzed by FE-SEM, XRD, Raman, FT-IR, BET, and electrochemical measurements. The results show that Ti3C2Tx@α-MnO2 nanowires possesses better comprehensive electrochemical properties (340.9 F?g -1 at 2 mV?s -1), nearly 2.5 times higher than using CTAB, and smaller charge transfer resistance, as well as excellent cycle stability.

Key words: MXene, polydopamine, surfactant, manganese dioxide, electrochemical performance

CLC Number: