纳米多孔NiO-Ni/Al_(3)Ni_(2)复合催化剂的制备及析氢性能研究  

Synthesis and hydrogen evolution performance ofnanoporous NiO-Ni/Al_(3)Ni_(2)composite catalysts

作　　者：顾先涛 樊培培 陈晓春 张俊杰 计巧珍 周仲康 董浩声 彭立雪 朱胜利[4] GU Xiantao;FAN Peipei;CHEN Xiaochun;ZHANG Junjie;JI Qiaozhen;ZHOU Zhongkang;DONG Haosheng;PENG Lixue;ZHU Shengli(State Grid Anhui Electric Power Co.,Ltd.,Electric Power Research Institute,Hefei 230601,China;State Grid Anhui Ixtra High Voltage Company,Hefei 230000,China;Anhui Xinli Electric Power Technology Consulting Co.,Ltd.,Hefei 230601,China;School of Materials Science and Engineering,Tianjin University,Tianjin 300350,China)

机构地区：[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]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

出　　处：《功能材料》2024年第12期12137-12143,共7页Journal of Functional Materials

基　　金：国网安徽省电力有限公司科技项目(B3120523000H)。

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/Al_(3)Ni_(2)复合催化剂。由于Ni、Al_(3)Ni_(2)和NiO三相的协同作用,NiO-Ni/Al_(3)Ni_(2)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/Al_(3)Ni_(2)-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/cm^(2)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。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 electrolysis for hydrogen production lies in the development of efficient,stable and cost-effective catalysts for the hydrogen evolution reaction.In this work,a nanoporous NiO-Ni/Al_(3)Ni_(2)composite catalyst was prepared by combining the dealloying method and electrochemical oxidation treatment.Due to the synergistic effects of the Ni,Al_(3)Ni_(2)and NiO tri-phases,the NiO-Ni/Al_(3)Ni_(2)composite catalyst exhibited excellent electrocatalytic activity for water splitting and hydrogen evolution.By adjusting the parameters of the electrochemical oxidation treatment,composite catalysts with different compositional ratios could be obtained.Among them,the NiO-Ni/Al_(3)Ni_(2)-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/cm^(2)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 

分 类 号：TQ225.2[化学工程—有机化工]