Potential-induced nanoclustering of metallic catalysts during electrochemical CO₂ reduction.

ABSTRACT: In catalysis science stability is as crucial as activity and selectivity. Understanding the degradation pathways occurring during operation and developing mitigation strategies will eventually improve catalyst design, thus facilitating the translation of basic science to technological applications. Herein, we reveal the unique and general degradation mechanism of metallic nanocatalysts during electrochemical CO₂ reduction, exemplified by different sized copper nanocubes. We follow their morphological evolution during operation and correlate it with the electrocatalytic performance. In contrast with the most common coalescence and dissolution/precipitation mechanisms, we find a potential-driven nanoclustering to be the predominant degradation pathway. Grand-potential density func

SUBMITTER: Huang J 

PROVIDER: S-EPMC6079067 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature