Abstract
AbstractHerein, we demonstrate the catalytic performance of carbon‐doped selenium (C‐Se), prepared by a facile reproducible hydrothermal method, toward electro‐reduction of CO2 (ERC). Here, we adopted two binders, namely Fumion® (anion exchange) and Nafion® (cation exchange) to investigate the catalytic performance and product selectivity in alkaline electrolyte, KHCO3. The C‐Se/Fumion catalysts exhibit superior activity and stability toward ERC compared with C‐Se/Nafion. The main products obtained at a potential range (‐0.9 to ‐1.2 V vs. RHE) of ERC are CH4 and C2H6 for C‐Se/Nafion and CH4 for C‐Se/Fumion. The maximum faradic efficiency of the C‐Se/Nafion for CH4 and C2H6 production are 16.7% and 8.9% and that of the C‐Se/Fumion for CH4 production is 25.5% at ‐1.1 V vs. RHE. The present study reveals the influence of ionic binders on the selectivity of the ERC products.
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