微波辅助合成磷酸铁钴纳米颗粒作为高效析氧反应电催化剂  

Microwave-assisted synthesis of cobalt-iron phosphate nanoparticles as efficient electrocatalysts for oxygen evolution reaction

作　　者：虞淑敏 张杨 陈婷 吴帅炜 唐相民 高涛涛 YU Shu-min;ZHANG Yang;CHEN Ting;WU Shuai-wei;TANG Xiang-min;GAO Tao-tao(School of Mechanical Engineering,Chengdu University,Chengdu 610106,China;College of Food and Biological Engineering Chengdu University,Chengdu 610106,China;BCEG Environmental Remedation Co.,LTD,Beijing 100000,China;Institute for Advanced Study,Chengdu University,Chengdu 610106,China)

机构地区：[1]成都大学机械工程学院,四川成都610106 [2]成都大学食品与生物工程学院,四川成都610106 [3]北京建工环境修复股份有限公司,北京100000 [4]成都大学高等研究院,四川成都610106

出　　处：《化学研究与应用》2023年第12期2858-2864,共7页Chemical Research and Application

摘　　要：本工作通过微波辅助加热法,成功制备出一种磷酸铁钴纳米催化材料,催化材料的扫描电镜测试、X射线光电子能谱图和X射线衍射谱图分析结果表明:制备的Co-Fe-P-O催化材料是纳米尺寸的非晶结构。随后的析氧催化性能测试实验结果显示:Co-Fe-P-0催化材料在10mA·cm^(-2)时所需过电位为320mV,还显示出了最低的Tafel斜率(45mV·dec^(-1))和最小的电化学阻抗,并拥有良好的稳定性,这都表明Co-Fe-P-O具有优异的析氧电催化活性。Co-Fe-P-O催化活性的提升可以归因于其比表面积大、活性物质分散均匀且与电解液接触面积大等优势。In this work,a nano-size catalytic material of cobalt iron phosphate was successfully prepared by the microwave-assisted heating method,and the microscopic morphology,composition and catalytic performance for electrochemical oxygen evolution(OER)were investigated.The results of the scanning electron microscopy test,X-ray photoelectron spectrogram and X-ray diffraction spec-trogram analysis of catalytic materials confirmed the amorphous structure of the prepared Co-Fe-P-O catalytic material.The results of the subsequent oxygen evolution catalytic performance test showed that Co-Fe-P-0 just needed a low overpotential of 320 mV to reach the current density of 10 mA·cm^(-2),and also displayed the lowest Tafel slope(45 mV·dec^(-1))and the smallest electrochemi-cal impedance.Besides,Co-Fe-P-O also showed good stability.These results showed that Co-Fe-P-O had an excellent catalytic per-formance for OER.The increase in the catalytic activity of Co-Fe-P-O could be attributed to its advantages such as large specific surface area,uniform dispersion of the active materials,and large contact area with the electrolyte.

关 键 词：微波辅助加热 电解水 析氧反应 磷酸盐 纳米材料 

分 类 号：O614.5[理学—无机化学]