微量氯离子对氧化钌析氧性能的影响  

Effect of Trace Chloride Ions on Ruthenium Oxide Oxygen Producing Performance

作　　者：陈安阳 陶凯[1] 林贻超 CHEN An-yang;TAO Kai;LIN Yi-chao(School of Materials Science and Chemical Engineering,Ningbo University,Ningbo 315211,China;Ningbo Institute of Materials Technology&Engineering,Chinese Academy of Sciences,Ningbo 315201,China)

机构地区：[1]宁波大学材料科学与化学工程学院,浙江宁波315211 [2]中国科学院宁波材料技术与工程研究所,浙江宁波315201

出　　处：《化学试剂》2023年第9期110-115,共6页Chemical Reagents

基　　金：浙江省“尖兵”“领雁”研发攻关计划资助项目(2022C01029);浙江省自然科学基金项目(LY21E020008)。

摘　　要：电解水制氢是目前最具潜力的绿氢制备技术。众所周知,电解液中含有大量氯离子会降低催化剂的活性和稳定性从而导致电解水效率下降。然而,目前的研究并未涉及微量氯离子(μg/L)对于催化剂性能的影响。借助于循环伏安扫描法、伏安线性扫描法、电化学阻抗谱等手段,仔细研究了微量氯离子在酸性介质中对二氧化钌(RuO_(2))析氧性能的影响,发现在含有极低浓度氯离子(μg/L)硫酸溶液中RuO_(2)的析氧反应活性和稳定性均有小幅度下降。Electrochemical water splitting is the most promising technology for the preparation of green hydrogen.It is well known that the presence of high levels of chloride ions in the electrolyte reduces the activity and stability of the catalyst,leading to a reduction in the efficiency of the water electrolysis.However,the effect of trace amounts of chloride ions(μg/L)on the performance of the catalyst has not been addressed in current studies.Cyclic voltammetry,linear scanning voltammetry and electrochemical impedance spectroscopy were used to investigate the effect of RuO_(2) on oxygen-evolution-reaction performance in acidic media containing trace amounts of chloride ions.We found a slight decrease in the OER activity and stability of RuO_(2) in sulphuric acid solutions containing very low concentrations of chloride ions(μg/L).

关 键 词：电解水 二氧化钌 氯离子 电化学性能 析氧反应 

分 类 号：O646.1[理学—物理化学]