天津工业大学学报2026，Vol.45Issue(4)：33-41,9.DOI:10.3969/j.issn.1671-024x.2026.04.005
强酸环境下IrP2-rGO电催化剂的氢气氧化性能
Hydrogen oxidation performance of an IrP2-rGO electrocatalyst in strong acid environment
摘要
Abstract
Pt/C,as the mainstream HOR catalyst for H2/Fe3+liquid-flow fuel cells,is prone to corrosion under high potential working conditions and a strongly acidic environment,triggering the loss of active sites,which seriously threatens the cell efficiency and operating life.To solve this problem,a simple,safe,and environmentally friendly method is used to prepare a new hydrogen-oxidation electrocatalyst,iridium phosphide,with graphene as the carrier.The phosphorization temperature,calcination time and phosphorus source doping amount are modulated to compare the HOR performance differences of IrP2-rGO under strong acidic environments.The results show that the catalyst has excellent HOR activity and maintains good stability in a strong acid environment:The apparent exchange cur-rent density of the catalyst can reach 2.71 mA/cm2 in 1 mol/L HCl,which is close to that of the commercial Pt/C catalysts.After 1 000 cycles of CV accelerated aging,the activity exhibits only 3.3%attenuation,which is far su-perior to Pt/C(approximately 17.2%).In addition,the catalyst can also be used in the H2/Fe3+liquid-flow fuel cell system.In the 60 h stability test,the cell voltage with IrP2-rGO as the anode catalyst only decreased by 10.53%,superior to Pt/C(19.36%).关键词
电化学/氢氧化反应/酸性环境/磷化物/H2/Fe3+液流燃料电池/电催化剂Key words
electrochemistry/hydrogen oxidation reaction/acidic environment/phosphide/hydrogen-iron liquid flow fuel cell/electrocatalyst分类
化学化工引用本文复制引用
谭小耀,刘静静,黄思琦,单蓝齐..强酸环境下IrP2-rGO电催化剂的氢气氧化性能[J].天津工业大学学报,2026,45(4):33-41,9.基金项目
国家自然科学基金项目(22376158,21906117) （22376158,21906117）
