Long-term durability of metastable β-Fe2O3 photoanodes in highly corrosive seawater

Changhao Liu, Ningsi Zhang, Yang Li, Rongli Fan, Wenjing Wang, Jianyong Feng (), Chen Liu, Jiaou Wang, Weichang Hao, Zhaosheng Li () and Zhigang Zou
Additional contact information
Changhao Liu: Nanjing University
Ningsi Zhang: Nanjing University
Yang Li: Nanjing University
Rongli Fan: Nanjing University
Wenjing Wang: Nanjing University
Jianyong Feng: Nanjing University
Chen Liu: Chinese Academy of Sciences
Jiaou Wang: Chinese Academy of Sciences
Weichang Hao: Beihang University
Zhaosheng Li: Nanjing University
Zhigang Zou: Nanjing University

Nature Communications, 2023, vol. 14, issue 1, 1-8

Abstract: Abstract Durability is one prerequisite for material application. Photoelectrochemical decomposition of seawater is a promising approach to produce clean hydrogen by using solar energy, but it always faces the problem of serious Cl− corrosion. We find that the main deactivation mechanism of the photoanode is oxide surface reconstruction accompanied by the coordination of Cl− during seawater splitting, and the stability of the photoanode can be effectively improved by enhancing the metal-oxygen interaction. Taking the metastable β-Fe2O3 photoanode as an example, Sn added to the lattice can enhance the M–O bonding energy and hinder the transfer of protons to lattice oxygen, thereby inhibiting excessive surface hydration and Cl− coordination. Therefore, the bare Sn/β-Fe2O3 photoanode delivers a record durability for photoelectrochemical seawater splitting over 3000 h.

Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-023-40010-9 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:14:y:2023:i:1:d:10.1038_s41467-023-40010-9

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

DOI: 10.1038/s41467-023-40010-9

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 ().