纳米多孔NiO-Ni/Al3Ni2复合催化剂的制备及析氢性能研究
Synthesis and hydrogen evolution performance of nanoporous NiO-Ni/Al3Ni2 composite catalysts
顾先涛 1樊培培 2陈晓春 1张俊杰 2计巧珍 3周仲康 3董浩声 2彭立雪 4朱胜利4
作者信息
- 1. 国网安徽省电力有限公司电力科学研究院,合肥 230601
- 2. 国网安徽省电力有限公司超高压分公司,合肥 230000
- 3. 国网安徽省电力有限公司电力科学研究院,合肥 230601;安徽新力电业科技咨询有限责任公司,合肥 230601
- 4. 天津大学材料科学与工程学院,天津 300350
- 折叠
摘要
利用电解水技术制取氢气是一种清洁环保的氢气生产方法,而要实现电解水制氢的工业化应用,关键在于开发高效、稳定且成本低廉的析氢反应催化剂.采用脱合金法和电化学氧化处理相结合的方法,制备出了一种纳米多孔NiO-Ni/Al3Ni2复合催化剂.由于Ni、Al3Ni2和NiO三相的协同作用,NiO-Ni/Al3Ni2复合催化剂表现出了良好的电催化水分解析氢活性.通过调整电化学氧化处理的工艺,能够获得具有不同组分比例的复合催化剂,其中,NiO-Ni/Al3Ni2-10s催化剂具有最佳的析氢反应催化性能,在碱性介质中,仅需79.1 mV的过电位就可达到10 mA/cm2的电流密度,同时该催化剂还展现出了卓越的长期稳定性.这一研究成果将为开发高活性、高稳定性的镍基析氢催化剂提供有价值的启示和借鉴.
Abstract
Producing hydrogen through water electrolysis technology is a clean and environmentally friendly method of hydrogen generation.However,the key to realizing the industrial-scale application of water electroly-sis for hydrogen production lies in the development of efficient,stable and cost-effective catalysts for the hydro-gen evolution reaction.In this work,a nanoporous NiO-Ni/Al3Ni2 composite catalyst was prepared by combi-ning the dealloying method and electrochemical oxidation treatment.Due to the synergistic effects of the Ni,Al3Ni2 and NiO tri-phases,the NiO-Ni/Al3Ni2 composite catalyst exhibited excellent electrocatalytic activity for water splitting and hydrogen evolution.By adjusting the parameters of the electrochemical oxidation treat-ment,composite catalysts with different compositional ratios could be obtained.Among them,the NiO-Ni/Al3Ni2-10s catalyst showed the optimal hydrogen evolution reaction catalytic performance,requiring only 79.1 mV of overpotential to achieve a current density of 10 mA/cm2 in alkaline media,while also demonstrating excellent long-term stability.This research provides valuable insights and references for the development of high-activity and high-stability nickel-based hydrogen evolution catalysts.
关键词
析氢反应/纳米多孔/电氧化/脱合金Key words
hydrogen evolution reaction/nanoporous/electrooxidation/dealloying引用本文复制引用
出版年
2024
NETL
NSTL
万方数据