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电化学(中英文) ›› 2019, Vol. 25 ›› Issue (5): 562-570.  doi: 10.13208/j.electrochem.181143

• 研究论文 • 上一篇    下一篇

Pt-WO3纳米片的合成及其电催化析氢性能研究

蒋鹏杰,吕 燚,陈昌淼,何宏程,蔡 勇*,张 明*   

  1. 湖南大学物理与微电子科学学院, 微纳光电器件及应用教育部重点实验室, 材料科学与工程学院, 湖南 长沙 410082
  • 收稿日期:2018-11-12 修回日期:2018-12-18 出版日期:2019-10-28 发布日期:2019-03-01
  • 通讯作者: 蔡 勇,张 明 E-mail:zhangming@hnu.edu.cn; cloudoo1@126.com

A Facile Route to Synthesize Pt-WO3 Nanosheets with Enhanced Electrochemical Performance for HER

JIANG Peng-jie, LV Yi , CHEN Chang-miao, HE Hong-cheng,CAI Yong*, ZHANG Ming*   

  1. School of Physics and Electronics, College of Materials Science and Engineering, Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, Hunan University, Changsha 410082, China
  • Received:2018-11-12 Revised:2018-12-18 Published:2019-10-28 Online:2019-03-01
  • Contact: CAI Yong, ZHANG Ming E-mail:zhangming@hnu.edu.cn; cloudoo1@126.com
  • Supported by:
    This work is supported by National Natural Science Foundation of China (51772082, 51574117, and 51804106) and China Postdoctoral Science Foundation (2017M6140495, 2018T10822).

摘要: 作者通过一个简便的方法在泡沫镍表面修饰了Pt-WO3纳米片. 作为连续导电网络, 泡沫镍基地可提高WO3电极的性能. 表面修饰的铂纳米颗粒不仅可以提高表面电导率, 也可提高其催化位点密度. 测试结果表明Pt-WO3修饰的泡沫镍显示出比未进行铂修饰催化剂更高的性能,其Tafel斜率为80 mV·dec-1, 电流密度为10 mA·cm-2时过电位仅为72 mV. 另外, Pt-WO3修饰的泡沫镍催化剂经45小时连续测试展现出优异的稳定性和长寿命. 本文研究提供了一种提高过渡金属氧化物作为析氢催化剂性能的潜在方法, 为其实际应用奠定基础.

关键词: 氧化钨, 析氢反应, 纳米片, 铂催化剂

Abstract: Platinum-tungsten trioxide (Pt-WO3) nanosheets were synthesized on nickel foams (NFs) directly. As great conductive networks, NFs substrates could greatly improve the electrode performance of WO3. The modified platinum nanoparticles not only enhanced the electron transformation of catalysts, but also increased the active sites for hydrogen evolution reaction (HER). Pt-WO3/NF revealed a better catalytic activity than WO3/NFs with a smaller Tafel slope (80 mV·dec-1) and a lower overpotential of 72 mV at the current density of 10 mA·cm-2. In addition, Pt-WO3/NF showed great durability and stability during the long-term electrochemical test of 45 h. This work provides a facile strategy of improving transition metal oxides (TMOs) as high activity HER catalysts for promising practical applications.

Key words: tungsten oxide, hydrogen evolution reaction, nanosheets, platinum catalysts

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