Efficient CO <sub>2</sub> ‐To‐HCOOH Conversion at Industrial Current Density in Strong Acid via Synergistic Water Activation

Abstract Efficient CO 2 electroreduction to HCOOH in acidic electrolytes remains a great challenge, especially under high current density conditions. In this study, by introducing In 2 O 3 onto the SnO 2 supported on graphene surface, an In 2 O 3 /SnO 2 @rGO‐2 catalyst is constructed that achieves exceptional selectivity (≈98.3% Faradaic efficiency) for converting CO 2 into HCOOH, at a current density 700 mA cm −2 in 0.5 m K 2 SO 4 (pH 1, adjusted with H 2 SO 4 ) with a high CO 2 single‐pass conversion efficiency of 74.1%. In situ spectroscopic evidence combined with theoretical calculations demonstrates that the In 2 O 3 /SnO 2 @rGO‐2 catalyst can modulate the reaction microenvironment to regulate the initial protonation step of the CO 2 RR, thereby promoting the production of HCOOH. Furthermore, the study demonstrates continuous production of pure HCOOH for over 600 hours at 300 mA cm −2 using a solid‐electrolyte reactor with the In 2 O 3 /SnO 2 @rGO‐2 catalyst, achieving an energy conversion efficiency of 31.8%.

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Publication Details

Journal
Advanced Functional Materials
Published
2025-12-03
DOI
https://doi.org/10.1002/adfm.202529166
Citations
1
Primary Topic
CO2 Reduction Techniques and Catalysts
Type
article
Field-Weighted Citation Impact
0.36
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article

Efficient CO 2 ‐To‐HCOOH Conversion at Industrial Current Density in Strong Acid via Synergistic Water Activation

Guang Mo, Weihai Ni, Jiankang Liu, Xinchen Kang et al.
1 citations
Advanced Functional Materials
CO2 Reduction Techniques and Catalysts
0.36
article

Efficient CO 2 ‐To‐HCOOH Conversion at Industrial Current Density in Strong Acid via Synergistic Water Activation

Guang Mo, Weihai Ni, Jiankang Liu, Xinchen Kang, Rongjuan Feng, Xueqing Xing, Zhongnan Ling, Sangseok Yu, Zhongjun Chen, Mingxin Gao, Yaoyu Yin, Zhonghua Wu, Shuming Zhou, Xuehui Wu, Buxing Han
article en
1 citations

Abstract

Abstract Efficient CO 2 electroreduction to HCOOH in acidic electrolytes remains a great challenge, especially under high current density conditions. In this study, by introducing In 2 O 3 onto the SnO 2 supported on graphene surface, an In 2 O 3 /SnO 2 @rGO‐2 catalyst is constructed that achieves exceptional selectivity (≈98.3% Faradaic efficiency) for converting CO 2 into HCOOH, at a current density 700 mA cm −2 in 0.5 m K 2 SO 4 (pH 1, adjusted with H 2 SO 4 ) with a high CO 2 single‐pass conversion efficiency of 74.1%. In situ spectroscopic evidence combined with theoretical calculations demonstrates that the In 2 O 3 /SnO 2 @rGO‐2 catalyst can modulate the reaction microenvironment to regulate the initial protonation step of the CO 2 RR, thereby promoting the production of HCOOH. Furthermore, the study demonstrates continuous production of pure HCOOH for over 600 hours at 300 mA cm −2 using a solid‐electrolyte reactor with the In 2 O 3 /SnO 2 @rGO‐2 catalyst, achieving an energy conversion efficiency of 31.8%.

Advanced Functional Materials
Shenyang University of Technology (CN), Chinese Academy of Sciences (CN), Beijing National Laboratory for Molecular Sciences (CN), Institute of High Energy Physics (CN), University of Chinese Academy of Sciences (CN), Shenyang University of Chemical Technology (CN)
Openalex Percentile: Top 35%
CO2 Reduction Techniques and Catalysts
0.36
DOISourceOpenAlex
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