Tip carbon encapsulation customizes cationic enrichment and valence stabilization for low K⁺ acidic CO₂ electroreduction.

ABSTRACT: Acidic electrochemical CO₂ conversion is a promising alternative to overcome the low CO₂ utilization. However, over-reliance on highly concentrated K⁺ to inhibit the hydrogen evolution reaction also causes (bi)carbonate precipitation to interfere with catalytic performance. In this work, under the screening and guidance of computational simulations, we present a carbon coated tip-like In₂O₃ electrocatalyst for stable and efficient acidic CO₂ conversion to synthesize formic acid (HCOOH) with low K⁺ concentration. The carbon layer protects the oxidized In species with higher intrinsic activity from reductive corrosion, and also peripherally formulates a tip-induced electric field to regulate the adverse H⁺

SUBMITTER: Wang Z 

PROVIDER: S-EPMC11839987 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature