Nutrient diffusion-inspired catalysts with self-reinforced concentration gradient for sustainable electroreduction of dilute CO₂.

ABSTRACT: The electrocatalysis of flue gas into CO in membrane electrode assembly (MEA) provides a sustainable route for realizing practical CO₂ electrolysis technology but suffers from restricted CO₂ mass transport due to thick gas boundary layer (GBL) and weak concentration gradient. Inspired by nutrient diffusion mechanism in plant, we introduce the concept of self-reinforced CO₂ concentration gradient, which is realized via porous carbon nanosheets (PC) as soil for enriching CO₂ and single-atomic Ni-doped carbon nanotubes (Ni-CNTs) as rhizome for electro-catalyzing CO₂. A combined experimental and simulation study reveals optimal length of Ni-CNTs on PC reduces the GBL thickness and spontaneously enhances CO₂ concentration gradien

SUBMITTER: Chen J 

PROVIDER: S-EPMC12356852 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature