Pt-WO3纳米片的合成及其电催化析氢性能研究

doi:10.13208/j.electrochem.181143

摘要/Abstract

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

中图分类号:

O646
TQ151.1

蒋鹏杰, 吕燚, 陈昌淼, 何宏程, 蔡勇, 张明. Pt-WO₃纳米片的合成及其电催化析氢性能研究[J]. 电化学（中英文）, 2019, 25(5): 562-570.

JIANG Peng-jie, LV Yi, CHEN Chang-miao, HE Hong-cheng, CAI Yong, ZHANG Ming. A Facile Route to Synthesize Pt-WO₃ Nanosheets with Enhanced Electrochemical Performance for HER[J]. Journal of Electrochemistry, 2019, 25(5): 562-570.

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链接本文: https://electrochem.xmu.edu.cn/CN/10.13208/j.electrochem.181143

https://electrochem.xmu.edu.cn/CN/Y2019/V25/I5/562

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Pt-WO₃纳米片的合成及其电催化析氢性能研究

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

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