Countering <i>in situ</i> reduction of SnO₂ during electrochemical CO₂ conversion <i>via</i> oxidative pulsing.

ABSTRACT: The application of periodic anodic pulses in CO₂ electroreduction (p-eCO₂R) offers a promising route to counteract the inevitable in situ reduction of metal oxide catalysts. This study demonstrates the first application of p-eCO₂R to a catalyst composed solely of a tin (oxide) active phase, using a pomegranate-structured SnO₂@C nanosphere. Periodic, prolonged anodic pulses (30 s) at 0.2 V vs. RHE improved faradaic efficiency towards formate after 6 hours, retaining 78 ± 2% versus 71 ± 6% under potentiostatic conditions, suggesting p-eCO₂R can extend Sn-based catalyst lifetimes for more sustainable CO₂ conversion.

SUBMITTER: Arnouts S 

PROVIDER: S-EPMC12309465 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature