无机材料学报 ›› 2021, Vol. 36 ›› Issue (6): 637-644.DOI: 10.15541/jim20200450

所属专题: 能源材料论文精选(2021) 【虚拟专辑】氢能材料(2020~2021)

• 研究论文 • 上一篇    下一篇

非晶Nd-Ni-B/NF稀土复合电极材料的制备及其析氢性能

朱云娜1(), 陈必清1(), 程天舒2, 杜婵1, 张士民1, 赵静1   

  1. 1.青海师范大学 化学化工学院, 西宁 810000
    2.中国科学技术大学 纳米科学技术学院, 苏州 215000
  • 收稿日期:2020-08-10 修回日期:2020-10-29 出版日期:2021-06-20 网络出版日期:2020-11-05
  • 通讯作者: 陈必清, 教授. E-mail: chenbq2332@163.com
  • 作者简介:朱云娜(1994-), 女, 硕士研究生. E-mail: zhuyunna11@163.com
  • 基金资助:
    国家自然科学基金重点项目(21553002);青海省科技计划项目(2016-ZJ-753)

Amorphous Nd-Ni-B/NF Rare Earth Composites: Preparation and HER Electrocatalytic Performance

ZHU Yunna1(), CHEN Biqing1(), CHENG Tianshu2, DU Chan1, ZHANG Shimin1, ZHAO Jing1   

  1. 1. College of Chemistry and Chemical Engineering, Qinghai Normal University, Xining 810000, China
    2. Nano Science and Technology Institute, University of Science and Technology of China, Suzhou 215000, China
  • Received:2020-08-10 Revised:2020-10-29 Published:2021-06-20 Online:2020-11-05
  • Contact: CHEN Biqing, professor. E-mail: chenbq2332@163.com
  • About author:ZHU Yunna(1994-), female, Master candidate. E-mail: zhuyunna11@163.com
  • Supported by:
    National Natural Science Foundation of China(21553002);Science and Technology Program of Qinghai Province(2016-ZJ-753)

摘要:

本研究采用简单的一步化学沉积法制备非晶纳米Nd-Ni-B/NF稀土复合电极并研究其析氢(Hydrogen evolution reaction, HER)性能。通过各种测试方法对纳米电极材料进行物相分析和形貌表征,并探索其电催化析氢性能和稳定性。结果表明, 稀土Nd可提高电极的电催化析氢性能, 当硝酸钕浓度为3 g?L-1时, 恒温35 ℃下施镀1 h, 制备的Nd-Ni-B/NF电极析氢性能最佳。Nd-Ni-B/NF(Nickel foam)电极在1.0 mol?L-1KOH 溶液中, 20 mA?cm-2电流密度下的析氢过电位仅为180 mV, Tafel斜率为117 mV?dec-1, 析氢反应由Volmer-Heyrovsky步骤控制。此外, Nd-Ni-B/NF电极具有优越的电化学稳定性, 在持续电解12 h或2000次循环伏安测试后, 催化剂的活性没有明显衰减。

关键词: 化学沉积, Nd-Ni-B, 非晶纳米, 析氢反应, 泡沫镍

Abstract:

The amorphous nano-Nd-Ni-B rare earth (RE) alloy catalytic electrode on nickel foam (NF) was prepared by simple one-step electroless deposition method and served as a highly active hydrogen evolution reaction (HER) catalyst. Its microstructure and electrocatalytic HER performance were characterized. The results show that addition of Nd improved the electrocatalytic HER. The preparation conditions were optimized with neodymium nitrate of 3 g?L-1, reaction temperature of 35 ℃ and reaction time of 1 h. The Nd-Ni-B/NF electrode requires an overpotential of only 180 mV to achieve the current density of 20 mA?cm-2 in 1.0 mol?L-1 KOH solution, and the corresponding Tafel slope is 117 mV?dec-1. HER of Nd-Ni-B/NF catalyst is controlled by Volmer-Heyrovsky step. Moreover, the Nd-Ni-B/Nf shows superior electrochemical stability, 12 h chronoamperometry and 2000 sweeps of cyclic voltammetry with no obvious activity decay.

Key words: electroless deposition, Nd-Ni-B, amorphous nano, hydrogen evolution reaction, nickel foam

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