Photoelectrochemical CO₂ Reduction at a Direct CuInGaS₂/Electrolyte Junction.

ABSTRACT: Photoelectrochemical (PEC) CO₂ reduction has received considerable attention given the inherent sustainability and simplicity of directly converting solar energy into carbon-based chemical fuels. However, complex photocathode architectures with protecting layers and cocatalysts are typically needed for selective and stable operation. We report herein that bare CuIn_0.3Ga_0.7S₂ photocathodes can drive the PEC CO₂ reduction with a benchmarking 1 Sun photocurrent density of over 2 mA/cm² (at -2 V vs Fc⁺/Fc) and a product selectivity of up to 87% for CO (CO/all products) production while also displaying long-term stability for syngas production (over 44 h). Importantly, spectroelectrochemical analysis using PEC impedanc

SUBMITTER: Liu Y 

PROVIDER: S-EPMC10111408 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature