碳载硫化铑催化剂在酸性体系中的氢氧化性能  

Hydrogen oxidation performance of carbon-supported rhodium sulfide catalyst in acidic system

作　　者：初园园[1] 赵若琛 周长剑 欧阳安鑫 谭小耀[1] CHU Yuanyuan;ZHAO Ruochen;ZHOU Changjian;OUYANG Anxin;TAN Xiaoyao(School of Chemical Engineering and Technology,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学化学工程与技术学院,天津300387

出　　处：《天津工业大学学报》2025年第2期43-50,共8页Journal of Tiangong University

基　　金：中国博士后科学基金项目(2020M680887);广东省燃料电池技术重点实验室开放基金(FC202223);材料化学工程国家实验室课题项目(SKLMCE-22B02);北京化工大学有机无机复合材料国家重点实验室开放基金(oic-202301004)。

摘　　要：针对传统商业Pt/C电催化剂在酸性电解质特别是盐酸中稳定性差这一问题,采用先冷凝回流后低温煅烧法制备了稳定性良好的高效氢氧化反应电催化剂即碳载硫化铑(RhxSy/C)纳米催化剂,结合物理表征手段以及在1 mol/L HCl中的电化学测试,考察了煅烧热处理的温度对电催化剂催化性能的影响。结果表明:不同的煅烧温度造成了RhxSy/C纳米颗粒中不同的晶相组成,进而影响催化剂的整体催化性能。在350℃煅烧温度下制备的RhxSy/C催化剂既拥有一定氢氧化活性,同时也呈现出良好的稳定性,经过1000圈加速老化稳定性测试后仍能保持87.1%的催化活性。To address the issue of poor stability of traditional commercial Pt/C electrocatalysts in acidic electrolytes,especially in hydrochloric acid,a stable and efficient hydrogen oxidation reaction electrocatalyst,namely RhxSy/C nanocatalyst supported on carbon,was prepared using a method of condensation reflux followed by low-temperature calcination.The influence of calcination temperature on the catalytic performance of the electrocatalyst was investigated through physical characterization and electrochemical testing in 1 mol/L HCl.The results indicate that different calcination temperatures lead to different crystal phases in the RhxSy/C nanoparticles,thereby affecting the overall catalytic performance of the catalyst.The RhxSy/C catalyst prepared at a calcination temperature of 350℃possesses both certain hydrogen oxidation activity and good stability,maintaining 87.1%of its catalytic activity after 1000 cycles of accelerated aging stability tests.

关 键 词：氢氧化反应 酸性体系 硫化铑 稳定性 

分 类 号：TQ426[化学工程]