摘要
电催化还原二氧化碳技术为缓解全球变暖和实现“碳中和”提供了一种可行的方法。然而,该技术在工业规模的应用上面临电流密度低、反应装置复杂和产物分离困难等问题。本研究采用Cu_(2)O为阴极催化剂及IrO_(2)为阳极催化剂,以纯水为阳极电解质溶液,利用膜电极型电解池,实现了阳极侧甲酸的高效收集。实验表明,在4.0 V电位下,甲酸的法拉第效率最高可达67%。同时,我们进行了长达850 h的稳定性测试,电解池的电流密度峰值达260 mA/cm^(2),甲酸的法拉第效率始终稳定在65%左右。本工作展示了膜电极型电解池可以实现在阳极端长期稳定的甲酸收集,证明其在工业化应用上具有可行性。
Electrocatalytic reduction of carbon dioxide technology provides a feasible method for mitigating global warming and achieving carbon neutrality.However,this technology faces problems such as low current density,complex reaction equipment,and difficult product separation in industrial scale applications.This study used Cu_(2)O as the cathode catalyst and IrO_(2) as the anode catalyst,pure water as the anode electrolyte solution,and a membrane electrode type electrolytic cell to achieve efficient collection of formic acid on the anode side.Experiments have shown that at a potential of 4.0 V,the Faraday efficiency of formic acid can reach up to 67%.Meanwhile,we conducted a stability test for 850 hours,and the peak current density of the electrolytic cell was 260 mA/cm^(2).The Faraday efficiency of formic acid remained stable at around 65%.The study demonstrated that the membrane electrode type electrolytic cell can achieve long-term stable collection of formic acid at the anode end,proving its feasibility in industrial applications.
作者
叶昌精
靳宋超
Ye Changjing;Jin Songchao(Anhui CO_(2)Cap&Conv Technology Co.,Ltd.,Hefei,China)
出处
《科学技术创新》
2025年第21期21-24,共4页
Scientific and Technological Innovation
基金
安徽省(中国)技术重大项目支持(编号:202203a07020012)。
关键词
MEA型电解池
甲酸
阳极
MEA type electrolytic cell
formic acid
anode
