在泡沫镍上生长钼酸盐的电催化析氧性能  

Electrocatalytic oxygen evolution performance of metal molybdate grown on nickel foam

作　　者：张百庆 尹卓勋 ZHANG Baiqing;YIN Zhuoxun(School of Chemistry and Chemical Engineering,Qiqihar University,Qiqihar 161006,China)

机构地区：[1]齐齐哈尔大学化学与化学工程学院,黑龙江齐齐哈尔161006

出　　处：《高师理科学刊》2024年第8期65-69,共5页Journal of Science of Teachers＇College and University

基　　金：黑龙江省教育厅基本科研面上项目(145209113)。

摘　　要：开发高效的电催化剂在电催化析氧领域意义重大,但也是一个巨大的挑战.钼酸盐具有较强的电子相互作用以及良好的导电性,被认为是增强电催化析氧性能的创新电催化剂.此外,金属钼酸盐中Mo与金属离子Fe具有协同作用,可进一步提高材料电化学反应活性.利用溶剂热法将钼酸镍、钼酸铁、钼酸钴三种钼酸盐生长在泡沫镍基底上,成功构建了Fe_(2)(MoO_(4))_(3)-NF纳米棱柱催化剂.结果表明,Fe_(2)(MoO_(4))_(3)-NF纳米棱柱催化剂在电流密度10 m A/cm^(2)下只需要182 mV的过电势,塔菲尔斜率只有34.8 mV/dec,比贵金属催化剂RuO_(2)更加优异,而且具有良好的时间电流稳定性.因此,Fe_(2)(MoO_(4))_(3)-NF纳米棱柱催化剂凭借其优异的催化活性和超强的稳定性具有巨大的潜力.Developing efficient electrocatalysts is of great significance but a huge challenge in the field of electrocatalytic oxygen evolution.Molybdate salts have strong electronic interactions and good conductivity,which are considered innovative electrocatalysts to enhance the electrocatalytic oxygen evolution performance.In addition,the synergistic effect of Mo and metal ion Fe in metal molybdates can further improve the electrochemical reaction activity of materials.Three molybdates,nickel molybdate,iron molybdate and cobalt molybdate,were grown on foam nickel substrate by solvothermal method,and Fe_(2)(MoO_(4))_(3)-NF nano-prism catalyst was successfully constructed.The results indicated that the Fe_(2)(MoO_(4))_(3)-NF nano-prism catalyst only required an overpotential of 182 mV at a current density of 10 mA/cm^(2),with a Tafel slope of just 34.8 mV/dec,which is superior to the precious metal catalyst RuO_(2),and also demonstrated excellent chronoamperometric stability.Therefore,the Fe_(2)(MoO_(4))_(3)-NF nano-prism catalyst holds immense potential due to its outstanding catalytic activity and exceptional stability.

关 键 词：泡沫镍 钼酸盐 析氧反应 自生长 

分 类 号：O69[理学—化学]