空气助烧法制备燃料电池用氧还原单原子催化剂  

Preparation of single-atom catalysts for oxygen reduction reaction in fuel cells by air-assisted combustion method

作　　者：杨代辉 马东伟 田合鑫 史晓斐 刘富亮 陈晓涛 YANG Daihui;MADongwei;TIAN Hexin;SHI Xiaofei;LIU Fuliang;CHEN Xiaotao(State Key Laboratory of Advanced Chemical Power Sources,Guizhou Meiling Power Sources Co.,Ltd.,Zunyi Guizhou 563003,China)

机构地区：[1]贵州梅岭电源有限公司,特种化学电源全国重点实验室,贵州遵义563003

出　　处：《电源技术》2024年第10期1942-1946,共5页Chinese Journal of Power Sources

摘　　要：通过空气助烧将质子酸盐[pPDA][2 HSO_(4)]在高温环境下碳化制备出N掺杂的多孔碳材料,将多孔碳材料与铁盐乙醇溶液混合,再经过高温处理,制备了高活性的氧还原单原子催化剂(single-atom catalyst,SAC)。该方法直接用空气助烧制备出多孔碳材料,同时省去毒性气体用于刻蚀与掺杂多孔碳材料的繁杂过程,简单高效地制备了燃料电池用单原子催化剂。制备的SAC样品在电催化氧还原反应中的半波电位达到了0.852 V(vs.RHE),起始电位达到0.959 V(vs.RHE),半波电位比Pt/C催化剂正移31 mV,起始电位比Pt/C催化剂正移44 mV。The N-doped porous carbon material was prepared by carbonizing protic salt[pPDA][2 HSO_(4)]at high temperature through air-assisted combustion method.The porous carbon material was mixed with the ethanol solution of iron salt,and the mixture was treated at high temperature to prepare a highly active oxygen reduction single-atom catalyst(SAC).The method eliminates the complicated processes of the toxic gases for etching and doping porous carbon material,and can simply and efficiently prepare SAC for fuel cells.In the electrocatalytic oxygen reduction reaction,the prepared SAC exhibits a half-wave potential of 0.852 V(vs.RHE)and an initial potential of 0.959 V(vs.RHE),which are 31 and 44 mV higher than those of Pt/C catalyst,respectively.

关 键 词：N掺杂 多孔碳材料 单原子催化剂 燃料电池 

分 类 号：TM911.4[电气工程—电力电子与电力传动]