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3D Cu Microbuds for Electrocatalytic CO Reduction Reaction
Xueqiu Chen1, Jing-Jing Lv2,1, Limin Zhou1
1Institute of New Materials and Industrial Technologies, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China.
Small (Weinheim an Der Bergstrasse, Germany)
|March 19, 2025
Summary
Researchers developed 3D copper microbuds (3D Cu MBs) for efficient electrocatalytic CO reduction reaction (eCORR). These catalysts significantly enhance selectivity for multi-carbon products, offering a promising route for CO electrolysis.
Area of Science:
- Materials Science
- Electrochemistry
- Catalysis
Background:
- Copper-based materials are key electrocatalysts for converting CO2 or CO into valuable multi-carbon (C2+) products.
- Material morphology and crystal facets critically influence electrocatalytic performance.
Purpose of the Study:
- To synthesize 3D copper microbuds (3D Cu MBs) with enriched grain boundaries.
- To evaluate the efficacy of 3D Cu MBs as catalysts for electrocatalytic CO reduction reaction (eCORR) in a flow cell.
Main Methods:
- Controlled synthesis of 3D Cu MBs by adjusting reaction temperature, time, and pH.
- Electrocatalytic testing of Cu MBs in a flow cell setup.
Main Results:
- 3D Cu MBs demonstrated significantly higher C2+ product selectivity (≈83% at -0.58 V vs RHE) compared to commercial micron Cu.
- Achieved higher partial current density (410 mA cm-2) and lower overpotential for eCORR.
- The hierarchical 3D structure and polycrystalline nature provided abundant active grain boundaries.
Conclusions:
- The synthesized 3D Cu MBs are efficient catalysts for electrocatalytic CO reduction reaction (eCORR).
- Enriched grain boundaries in the 3D hierarchical structure enhance C2+ product formation.
- This work provides insights into crystalline-controlled synthesis of 3D Cu catalysts for CO electrolysis.
