Paths towards enhanced electrochemical CO2 reduction

• 来源期刊: 国家科学评论（英文版）
• 年，卷（期）: 2020,（1）
• 页码范围: 7-9
• 页数: 3页
• 语种: 英文
• DOI: 10.1093/nsr/nwz121

摘要

Anthropogenic CO2 emissions engender a severe threat to the global ecosystem and consequently are a growing concern associated with traditional means of energy production.Direct electrocatalytic reduction of CO2 into energyrich fuels and value-added chemical feedstocks provides a promising route to realize a carbon-neutral energy cycle,and at the same time,store the electricity generated from intermittent renewableenergy sources.Thermodynamically,the CO2 reduction reaction (CO2RR) suffers from a high energy barrier of CO2·-formation (-1.90 V vs.SHE,pH =7) and low selectivity due to the competing hydrogen evolution reaction (HER).Kinetically,multi-proton-coupled electron transfer steps upon CO2RR render sluggish reaction processes [1].To tackle the above issues,significant progress has been achieved on the optimization of catalysts,products,and systems.The ultimate viability of this technology is contingent upon the exploitation of lowcost catalytic systems capable of providing high energy efficiency and conversion rate.