Fe/Zn共掺杂聚苯胺空气阴极催化剂的制备及表征  

Preparation and characterization of Fe and Zn co-doped polyaniline microbial fuel cell cathode catalysts

作　　者：柴元吉 王涵明 刘智民 肖龙龙 沈哲曦 于泊蕖[1] CHAI Yuanji;WANG Hanming;LIU Zhimin;XIAO Longlong;SHEN Zhexi;YU Boqu(School of Eco-Environment,Hebei University,Baoding 071002,China;Baoding Mengniu Beverage Co,Ltd.,Baoding 072450,China)

机构地区：[1]河北大学生态环境系,河北保定071002 [2]保定蒙牛饮料有限公司,河北保定072450

出　　处：《河北大学学报（自然科学版）》2024年第3期261-268,共8页Journal of Hebei University(Natural Science Edition)

基　　金：南京大学污染控制与资源化研究国家重点实验室开放基金资助项目(PCRRF21006);白洋淀流域生态保护与京津冀可持续发展协同创新中心资助。

摘　　要：为解决微生物燃料电池(MFC)阴极催化剂耐久性差、氧还原反应(ORR)动力学缓慢和成本高的问题,制备一种Fe、Zn和N共掺杂的多孔碳作为空气阴极催化剂.电化学研究表明:合成的催化剂Fe/Zn-NC-0.9对氧还原反应具有较好的电催化活性,电荷转移电阻为5.6Ω、交换电流密度为53.3 mV/dec、最大功率密度达到(1253±20)mW/m^(2).此外,还评价了Fe对氧还原反应性能和最大功率密度的影响:中等掺杂含量的Fe对提高催化活性起着至关重要的作用,而Fe和N共掺杂的协同效应促进了阴极性能.In order to address the issues of low durability,slow kinetics of the oxygen reduction reaction(ORR),and high cost of cathode catalysts for microbial fuel cells(MFC),a porous carbon codoped with Fe,Zn,and N as an air cathode catalyst was prepared.The electrochemical studies demonstrated that the synthesised catalyst Fe/Zn-NC-0.9 exhibited excellent electrocatalytic activity for the oxygen reduction reaction.The charge transfer resistance and the exchange current density were measured at 5.6Ωand 53.3 mV/dec,respectively,while the maximum power density was at(1253±20)mW/m^(2).Additionally,the impact of the Fe doping level on the ORR reaction and maximum power density was assessed.It was found that a moderate Fe doping level is essential for enhancing catalytic activity.Furthermore,the cathode performance is improved through the synergistic effect of Fe and N codoping.

关 键 词：Fe/Zn-NC ORR 空气阴极 微生物燃料电池 催化剂 

分 类 号：X506[环境科学与工程—环境工程]