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电化学(中英文) ›› 2019, Vol. 25 ›› Issue (5): 579-588.  doi: 10.13208/j.electrochem.181142

• 研究论文 • 上一篇    下一篇

具备高效析氢催化效率的三维多孔氮化钒八面体催化剂

尹 灿,付威威,方 玲,游时利,张慧娟,王 煜*   

  1. 重庆大学输配电装备及系统安全与新技术国家重点实验室, 重庆大学化学化工学院, 重庆 400044
  • 收稿日期:2018-11-12 修回日期:2019-04-22 出版日期:2019-10-28 发布日期:2019-10-28
  • 通讯作者: 王 煜 E-mail:wangy@cqu.edu.cn

Three-Dimensional Porous VN Octahedron Catalyst with High Electrocatalytic Efficiency toward Hydrogen Evolution Reaction

YIN Can, FU Wei-wei, FANG Ling, YOU Shi-li, ZHANG Hui-juan, WANG Yu*   

  1. State Key Laboratory of Power Transmission Equipment & System Security and New Technology, The School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044,China
  • Received:2018-11-12 Revised:2019-04-22 Published:2019-10-28 Online:2019-10-28
  • Contact: WANG Yu E-mail:wangy@cqu.edu.cn
  • Supported by:
    This work was financially supported by the Fundamental Research Funds for the Central Universities (0301005202017), Thousand Young Talents Program of the Chinese Central Government (Grant No. 0220002102003), National Natural Science Foundation of China (NSFC, Grant No. 21373280, 21403019), Beijing National Laboratory for Molecular Sciences (BNLMS) and Hundred Talents Program at Chongqing University (Grant No. 0903005203205), The State Key Laboratory of Mechanical Transmissions Project (SKLMT-ZZKT-2017M11).

摘要: 随着中国经济和社会的快速发展,能源需求和环境污染问题也日益渐长. 发展和开发高效清洁的新能源燃料可以有效地缓解能源危机和环境污染. 如今,研发高效、环境友好和低成本的催化剂仍是析氢反应的研究重点. 在此项研究中,作者首先通过煅烧处理方式制备了一种三维多孔的氮化钒八面体结构型的催化剂. 该催化剂具备高效的析氢效率,包括较低的过电位94.0 mV(在-10 mA·cm-2时),塔菲尔斜率为54.6 mV·dec-1,以及在酸性条件80小时展现出的优良稳定性,该氮化钒的析氢催化效率优于许多报道过的氮化物,其优良的催化效率可以归因于它独一无二的自身性质和大量的活性位点.

关键词: 氮化物(氮化钒), 多孔催化剂, 活性位点, 析氢反应

Abstract: With the rapid development of China’s economy, the demand for energy is increasing, and environmental problems are becoming more and more serious. The development and utilization of highly-clean new energy fuel can effectively alleviate the energy crisis and environmental pollution. Nowadays, exploring high-efficiency, environment-friendly and low-cost catalysts remains the focus of research in the hydrogen evolution reaction (HER). In this research, firstly, we proposed a three-dimensional porous vanadium nitride (VN) with octahedral structure, which was prepared by a calcination treatment method. The VN catalyst showed a good electrocatalytic activity toward HER, involving a small overpotential of 94.0 mV at -10 mA·cm-2, a corresponding low Tafel slope of 54.6 mV·dec-1 and a great stability in an acidic medium for 80 h, which is much better than many reported nitrides. Moreover, the outstanding catalytic performance of VN toward HER could be ascribed to its unique composition nature and numerous active sites.

Key words: nitrides, porous catalyst, active sites, hydrogen evolution reaction

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