CO2 electrolysis to multi-carbon products in strong acid at ampere-current levels on La-Cu spheres with channels

Jiaqi Feng, Limin Wu, Xinning Song, Libing Zhang, Shunhan Jia, Xiaodong Ma, Xingxing Tan, Xinchen Kang, Qinggong Zhu, Xiaofu Sun () and Buxing Han ()
Additional contact information
Jiaqi Feng: Chinese Academy of Sciences
Limin Wu: Chinese Academy of Sciences
Xinning Song: Chinese Academy of Sciences
Libing Zhang: Chinese Academy of Sciences
Shunhan Jia: Chinese Academy of Sciences
Xiaodong Ma: Chinese Academy of Sciences
Xingxing Tan: Chinese Academy of Sciences
Xinchen Kang: Chinese Academy of Sciences
Qinggong Zhu: Chinese Academy of Sciences
Xiaofu Sun: Chinese Academy of Sciences
Buxing Han: Chinese Academy of Sciences

Nature Communications, 2024, vol. 15, issue 1, 1-11

Abstract: Abstract Achieving satisfactory multi-carbon (C2+) products selectivity and current density under acidic condition is a key issue for practical application of electrochemical CO2 reduction reaction (CO2RR), but is challenging. Herein, we demonstrate that combining microenvironment modulation by porous channel structure and intrinsic catalytic activity enhancement via doping effect could promote efficient CO2RR toward C2+ products in acidic electrolyte (pH ≤ 1). The La-doped Cu hollow sphere with channels exhibits a C2+ products Faradaic efficiency (FE) of 86.2% with a partial current density of −775.8 mA cm−2. CO2 single-pass conversion efficiency for C2+ products can reach 52.8% at −900 mA cm−2. Moreover, the catalyst still maintains a high C2+ FE of 81.3% at −1 A cm−2. The channel structure plays a crucial role in accumulating K+ and OH- species near the catalyst surface and within the channels, which effectively suppresses the undesired hydrogen evolution and promotes C–C coupling. Additionally, the La doping enhances the generation of *CO intermediate, and also facilitates C2+ products formation.

Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/s41467-024-49308-8 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-49308-8

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-024-49308-8

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().