无机材料学报 ›› 2020, Vol. 35 ›› Issue (1): 79-85.DOI: 10.15541/jim20190107 CSTR: 32189.14.10.15541/jim20190107

所属专题: MAX相和MXene材料 MXene材料专辑(2020~2021)

• 研究论文 • 上一篇    下一篇

二维碳化钛/碳纳米管负载铂钌粒子的制备及电催化性能研究

李亚辉1,张建峰1(),曹惠杨1,张欣1,江莞1,2   

  1. 1. 河海大学 力学与材料学院, 南京 211100
    2. 东华大学 材料科学与工程学院, 上海 201620
  • 收稿日期:2019-03-12 修回日期:2019-06-25 出版日期:2020-01-20 网络出版日期:2019-09-04
  • 作者简介:李亚辉(1994-), 男, 硕士研究生. E-mail:15951935290@163.com
  • 基金资助:
    国家重点研发计划(2018YFC1508704);江苏省自然科学基金(BK20161506);国家自然科学基金(51432004)

PtRu Particles Supported on Two-dimensional Titanium Carbide/Carbon Nanotubes: Preparation and Electrocatalytic Properties

LI Ya-Hui1,ZHANG Jian-Feng1(),CAO Hui-Yang1,ZHANG Xin1,JIANG Wan1,2   

  1. 1. College of Mechanics and Materials, Hohai University, Nanjing 211100, China
    2. College of Materials Science and Engineering, Donghua University, Shanghai 210050, China
  • Received:2019-03-12 Revised:2019-06-25 Published:2020-01-20 Online:2019-09-04
  • About author:LI Ya-Hui (1994-), male, Master candidate. E-mail:15951935290@163.com
  • Supported by:
    National Key R&D Program of China(2018YFC1508704);Jiangsu Provincial Natural Science Foundation of China(BK20161506);National Natural Science Foundation of China(51432004)

摘要:

直接甲醇燃料电池因操作方便、转化效率高、操作温度低、污染少以及液体燃料易存储易运输等优势具有良好的应用前景, 但现有阳极催化剂存在催化活性低、抗CO中毒性差等缺点, 制约了其商业化应用前景。本研究采用三步法制备得到了一系列不同Pt、Ru配比的PtRu/(Ti3C2Tx)0.5-(MWCNTs)0.5阳极催化剂材料, HF腐蚀Ti3AlC2得到Ti3C2Tx, 与酸化处理的多壁碳纳米管(MWCNTs)复合后通过溶剂热法负载Pt、Ru颗粒。通过XRD、SEM、EDS、TEM、XPS等分析铂钌的协同关系。结果表明: Ru原子与Pt原子晶格混合, 形成了粒径约3.6 nm的铂钌双金属合金。电化学分析结果表明: Pt1Ru0.5/(Ti3C2Tx)0.5-(MWCNTs)0.5催化剂具有最佳的电化学性能, 其电化学活性面积(Electrochemical Active Area, ECSA)为139.5 m 2/g, 正向峰电流密度为36.4 mA/cm 2

关键词: 二维Ti3C2Tx材料, 铂钌纳米粒子, 直接甲醇燃料电池, 电催化性能

Abstract:

Direct methanol fuel cells have good application prospects due to their advantages of convenient operation, high conversion efficiency, low operating temperature, low pollution, and easy storage and easy transportation of liquid fuel. However, existing anode catalysts have shortcomings such as low catalytic activity and poor resistance to CO toxicity which restrict its commercial application. In this study, a series of PtRu/(Ti3C2Tx)0.5-(MWCNTs)0.5 anode catalyst materials with different Pt and Ru ratios were prepared by three-step method. Ti3C2Tx was obtained by HF corrosion of Ti3AlC2, and acidified multi-walled carbon nanotubes (MWCNTs). After the compounding, Pt and Ru particles are supported by a solvothermal method. The synergistic relationship of Ru and Pt atoms was analyzed by XRD, SEM, EDS, TEM, and XPS. The results show that the Ru atoms are mixed with the Pt atoms to form PtRu bimetallic alloy with a particle size of about 3.6 nm. The electrochemical results show that the Pt1Ru0.5/(Ti3C2Tx)0.5-(MWCNTs)0.5 catalyst has the best electrochemical performance. Its electrochemical active area (ECSA) is 139.5 m 2/g, and positive peak current density is 36.4 mA/cm 2.

Key words: two-dimensional Ti3C2Tx material, PtRu nanoparticle, direct methanol fuel cells, electrocatalytic performance

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