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Updated: Oct 25, 2026

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Galvanic Replacement Derived Bi-Based Catalysts for Formate Coproduction via Coupled CO2RR and Methanol Oxidation
Jialuo Li1, Guojie Gao1, Yu Wei1
1State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian116024, China.
Abstract:
Coupling CO2 reduction with thermodynamically favorable anodic oxidation offers a promising route for lowering the energy demand of paired electrosynthesis. Herein, we report a bismuth-based paired electrosynthesis system (Bi NSs/CF || Bi/NF-20) for the simultaneous coproduction of high value formate at both electrodes via cathodic CO2 reduction (CO2RR) and anodic methanol oxidation (MOR). Crucially, these self-supported electrodes are rationally constructed through a spontaneous galvanic replacement strategy, offering a sustainable alternative to conventional energy intensive fabrication. Consequently, the integrated two-electrode electrolyzer operates stably at 3 V for 50 h, yielding a combined FE exceeding 185% and impressive production capacities of more than 400 g kWh-1. Combined in situ Raman spectroscopy and theoretical calculations reveal that the intrinsic electronic properties of the Bi NSs/CF facilitate the rate-determining step by lowering the *OCHO formation barrier, and elucidate the dynamic evolution of active sites during the MOR. This study offers a compelling strategy for designing integrated electrolyzers toward CO2 valorization with high atom economy.
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