Self-protecting CoFeAl-layered double hydroxides enable stable and efficient brine oxidation at 2 A cm−2

Wei Liu, Jiage Yu, Tianshui Li, Shihang Li, Boyu Ding, Xinlong Guo, Aiqing Cao, Qihao Sha, Daojin Zhou (), Yun Kuang () and Xiaoming Sun ()
Additional contact information
Wei Liu: Beijing University of Chemical Technology
Jiage Yu: Beijing University of Chemical Technology
Tianshui Li: Beijing University of Chemical Technology
Shihang Li: Beijing University of Chemical Technology
Boyu Ding: Beijing University of Chemical Technology
Xinlong Guo: Beijing University of Chemical Technology
Aiqing Cao: Beijing University of Chemical Technology
Qihao Sha: Beijing University of Chemical Technology
Daojin Zhou: Beijing University of Chemical Technology
Yun Kuang: Research Institute of Tsinghua University in Shenzhen
Xiaoming Sun: Beijing University of Chemical Technology

Nature Communications, 2024, vol. 15, issue 1, 1-9

Abstract: Abstract Low-energy consumption seawater electrolysis at high current density is an effective way for hydrogen production, however the continuous feeding of seawater may result in the accumulation of Cl−, leading to severe anode poisoning and corrosion, thereby compromising the activity and stability. Herein, CoFeAl layered double hydroxide anodes with excellent oxygen evolution reaction activity are synthesized and delivered stable catalytic performance for 350 hours at 2 A cm−2 in the presence of 6-fold concentrated seawater. Comprehensive analysis reveals that the Al3+ ions in electrode are etched off by OH− during oxygen evolution reaction process, resulting in M3+ vacancies that boost oxygen evolution reaction activity. Additionally, the self-originated Al(OH)n− is found to adsorb on the anode surface to improve stability. An electrode assembly based on a micropore membrane and CoFeAl layered double hydroxide electrodes operates continuously for 500 hours at 1 A cm−2, demonstrating their feasibility in brine electrolysis.

Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-024-49195-z 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_s41467-024-49195-z

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

DOI: 10.1038/s41467-024-49195-z

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 ().