高等学校化学学报 ›› 2022, Vol. 43 ›› Issue (9): 20220366.doi: 10.7503/cjcu20220366

• 研究论文 • 上一篇    下一篇

氮掺杂超薄碳纳米片复合铂钌单原子合金催化剂的电化学析氢性能

范建玲1, 唐灏2, 秦凤娟2, 许文静2, 谷鸿飞2, 裴加景3(), 陈文星2()   

  1. 1.桂林师范高等专科学校物理与工程技术系, 桂林 541199
    2.北京理工大学材料学院, 能源与催化中心, 北京 100081
    3.北京化工大学有机无机复合材料国家重点实验室, 软物质科学与工程北京市先进创新中心, 北京 100029
  • 收稿日期:2022-05-21 出版日期:2022-09-10 发布日期:2022-06-20
  • 通讯作者: 陈文星 E-mail:peichem@126.com;wxchen@bit.edu.cn
  • 作者简介:裴加景, 男, 博士, 助理研究员, 主要从事功能纳米材料调控合成、 单原子催化剂局域环境精细设计及其电催化CO2还原等方面的研究. E-mail: peichem@126.com
  • 基金资助:
    北京自然科学基金(2212018)

Nitrogen Doped Ultra-thin Carbon Nanosheet Composited Platinum-ruthenium Single Atom Alloy Catalyst for Promoting Electrochemical Hydrogen Evolution Process

FAN Jianling1, TANG Hao2, QIN Fengjuan2, XU Wenjing2, GU Hongfei2, PEI Jiajing3(), CEHN Wenxing2()   

  1. 1.Department of Physics and Engineering Technology,Guilin Normal College,Guilin 541199,China
    2.Energy & Catalysis Center,School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,China
    3.State Key Lab of Organic?Inorganic Composites,Beijing Advanced Innovation Center for Soft Matter Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China
  • Received:2022-05-21 Online:2022-09-10 Published:2022-06-20
  • Contact: CEHN Wenxing E-mail:peichem@126.com;wxchen@bit.edu.cn
  • Supported by:
    the Beijing Natural Science Foundation, China(2212018)

摘要:

为了减少贵金属的用量, 降低成本, 提高大规模生产的可能性, 构建单原子合金(SAA)是一个非常可行的解决方案. 设计了一种超小PtRu单原子合金物种均匀分散在掺氮超薄碳纳米片上的电催化剂(PtRu SAA/NC), 并通过基于同步辐射的X射线吸收精细结构(XAFS)光谱进行了结构确认. 与纯Ru团簇和氮掺杂的碳片相比, PtRu SAA/NC具有更高的析氢反应(HER)催化活性和特殊的稳定性, 在0.5 mol/L H2SO4溶液中进行HER时, 表现出较小的Tafel斜率(43 mV/dec), 且在10 mA/cm2电流密度下过电位仅为54 mV.

关键词: 单原子合金催化剂, 氮掺杂超薄碳纳米片, 电化学析氢反应, 电催化剂

Abstract:

In order to reduce the amount of precious metals, reduce costs and increase the possibility of large-scale production, the construction of single atom alloy(SAA) is a very feasible solution. Herein, an electrocatalyst with ultra-small PtRu single atom alloy species evenly dispersed on nitrogen doped ultra-thin carbon nanosheets(PtRu SAA/NC) was designed, and its structure was confirmed by synchrotron-radiation-based X-ray absorption fine structure(XAFS) spectroscopy. Compared with pure Ru clusters and nitrogen doped carbon sheets, the PtRu SAA/NC possesses higher hydrogen evolution reaction(HER) catalytic activity and exceptional stability, which exhibits a small Tafel slope of 43 mV/dec and a low overpotential of 54 mV at 10 mA/cm2 during HER in 0.5 mol/L H2SO4 solution. The design of this low-cost and high-efficiency single atom alloy catalyst provides a new research direction for the development of clean energy structure conversion.

Key words: Single-atom alloys catalyst, Nitrogen doped ultra-thin carbon nanosheets, Electrochemical hydrogen evolution, Electrocatalyst

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