一步电沉积法制备NiCoFe电极用于电化学脱氧的研究  

Preparation of NiCoFe electrodes for electrochemical deoxidation by one-step electrodeposition

作　　者：王锡民 于德泽 谢陈鑫 朱田震 钱光磊 姚光源 WANG Ximin;YU Deze;XIE Chenxin;ZHU Tianzhen;QIAN Guanglei;YAO Guangyuan(CenerTech Tianjin Chemical Research&Design Institute Co.,Ltd.,Tianjin 300131,China)

机构地区：[1]中海油天津化工研究设计院有限公司,天津300131

出　　处：《工业水处理》2024年第6期127-134,共8页Industrial Water Treatment

基　　金：中国海洋石油集团有限公司重大科技专项项目(CNOOC-KJ 145 FZDXM 00 TJY 003 TJY 2021);中国海洋石油集团三新三化项目(JTKY-SXSH-2022-HF-03);中海油能源发展股份有限公司重点攻关项目(HFKJ-ZDGG-TJY-2021-01);中海油能源发展股份有限公司前瞻科技项目(HFKJ-CGXM-TJY-2021-02)。

摘　　要：针对电化学脱氧中阴极氧还原反应(ORR)所用催化材料成本高、效果差的问题,在不同电流密度下通过电沉积法高效制备NiCoFe三元合金,并对合金材料的形貌和结构进行表征和分析,结果表明所制备NiCoFe合金有着蓬松的花椰菜状表面形貌和合金晶型结构。在三电极体系中对不同电流密度下制备的NiCoFe合金进行ORR性能测试,结果表明,当电沉积电流密度为1.0 A/cm2时,NiCoFe合金的半波电位为0.782 V,起始电位为0.936 V,极限电流密度为2.9 mA/cm2,盘环电极(RRDE)测试显示合金的转移电子数为3.52,接近于商用Pt/C催化剂的四电子转移。设计电化学脱氧小试设备用于考察NiCoFe合金作为阴极电极时对于模拟工业水中溶解氧的去除效果,结果表明NiCoFe阴极的脱氧率达99%以上,是一种性能优异的ORR电催化材料。Aiming at the high cost and poor effect of catalytic materials for cathodic oxygen reduction reaction(ORR)in electrochemical deoxygenation,NiCoFe ternary alloy was efficiently prepared by electrodeposition under different current densities,and the morphology and structure of the alloy material were characterized and analyzed,which showed that NiCoFe alloy had a fluffy cauliflower-like surface morphology and alloy crystalline structure.The ORR performance of the NiCoFe alloy was tested in a three-electrode system at different current densities.When the electro-deposition current density was 1.0 A/cm^(2),the alloy was obtained with a half-wave potential of 0.782 V,an onset poten-tial of 0.936 V,and a limiting current density of 2.9 mA/cm^(2).The rotating ring disk electrode(RRDE)test showed that the number of transferred electrons of the alloy was 3.52,which was close to that of the four-electron transfer of com-mercial Pt/C catalysts.An electrochemical deoxidation test equipment was designed to investigate the removal effect of NiCoFe alloy as a cathode electrode on dissolved oxygen in simulated industrial water.The results showed that the de-oxidation rate of NiCoFe cathode was over 99%,making it an excellent ORR electrocatalyst material.

关 键 词：电化学 脱氧 电催化剂 氧还原反应 NiCoFe 

分 类 号：X703.1[环境科学与工程—环境工程]