镍/生物质衍生氮掺杂多孔碳纳米复合材料的制备及对甲醇氧化反应的电催化  

Ni/Biomass-Derived Nitrogen-Doped Porous Carbon Nanocomposites:Preparation and Electrocatalysis for Methanol Oxidation Reaction

作　　者：方惠燕 赵敬创 康贤禹 李艳彩 FANG Hui-Yan;ZHAO Jing-Chuang;KANG Xian-Yu;LI Yan-Cai(College of Chemistry,Chemical Engineering and Environment,Minnan Normal University,Zhangzhou,Fujian 363000,China;Fujian Province Key Laboratory of Modern Analytical Science and Separation Technology,Minnan Normal University,Zhangzhou,Fujian 363000,China;Fujian Provincial University Key Laboratory of Pollution Monitoring and Control,Minnan Normal University,Zhangzhou,Fujian 363000,China)

机构地区：[1]闽南师范大学化学化工与环境学院,漳州363000 [2]闽南师范大学,福建省现代分离分析科学与技术重点实验室,漳州363000 [3]闽南师范大学,污染监测与控制福建省高校重点实验室,漳州363000

出　　处：《无机化学学报》2022年第10期1959-1969,共11页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金青年项目(No.219051250);福建省科技厅自然科学基金面上项目(No.2020J01802)资助。

摘　　要：以Ni(Ac)_(2)·4H_(2)O和生物质材料丝瓜络为原料,通过先浸渍后热解的方法制备了低成本的镍纳米颗粒/丝瓜络衍生氮掺杂多孔碳纳米复合材料(Ni/T⁃dNPCN)。研究复合材料对甲醇的电催化性能,并讨论热解温度对复合材料结构和性能的影响。结果表明,Ni/T⁃dNPCN修饰玻碳电极(GCE)在碱性条件下对甲醇氧化反应(MOR)具有良好的电催化活性。其中,800℃煅烧得到的Ni/T⁃dNPCN_(800)/GCE对1 mol·L^(-1)甲醇具有最低的起始电位(0.344 V(vs Ag/AgCl))、最高的催化电流密度(质量活性:1902 mA·mg_(Ni)^(-1);比活性:1.61 mA·cm^(-2))和最快的动力学反应过程(Tafel斜率:50.23 mV·dec^(-1)),其催化活性约为商业化Pt/C/GCE的3.92倍。且计时电流测试表明,Ni/T⁃dNPCN_(800)/GCE具有良好的稳定性。The low⁃cost nickel nanoparticles/towel gourd derived nitrogen⁃doped porous carbon nanocomposites(Ni/T⁃dNPCN)were prepared with Ni(Ac)_(2)·4H_(2)O and towel gourd by impregnation and then pyrolysis.The electro⁃catalytic performance of the nanocomposites for methanol oxidation reaction(MOR)was studied,and the effect of pyrolysis temperature on its structure and properties was also discussed.The results demonstrated that the Ni/T⁃dNPCN modified glassy carbon electrode(Ni/T⁃dNPCN/GCE)exhibited well electrocatalytic activity for MOR in alkaline electrolytes.Among them,Ni/T⁃dNPCN_(800)/GCE possessed the best catalytic performance with the lowest onset potential(0.344 V(vs Ag/AgCl)),the highest catalytic current density(mass activity:1902 mA·mg_(Ni)^(-1);specif⁃ic activity:1.61 mA·cm^(-2))and the fastest kinetics process(Tafel slope:50.23 mV·dec^(-1)),its catalytic activity was about 3.92 times that of the commercial Pt/C catalyst modified glassy carbon electrode.And according to the chrono⁃amperometry test,Ni/T⁃dNPCN_(800)/GCE displayed good stability.

关 键 词：直接甲醇燃料电池 甲醇氧化反应 生物质衍生碳 镍基纳米复合材料 碱性电解质 

分 类 号：O643.36[理学—物理化学]