Electric double layer-mediated polarization field for optimizing photogenerated carrier dynamics and thermodynamics

Chengxin Zhou, Jian Gao (), Yunlong Deng, Ming Wang, Dan Li and Chuan Xia ()
Additional contact information
Chengxin Zhou: Sichuan Changhong Electronic (Group) Co.; Ltd.
Jian Gao: Sichuan Changhong Electronic (Group) Co.; Ltd.
Yunlong Deng: Sichuan Changhong Electronic (Group) Co.; Ltd.
Ming Wang: Sichuan Changhong Electronic (Group) Co.; Ltd.
Dan Li: Sichuan Changhong Electronic (Group) Co.; Ltd.
Chuan Xia: University of Electronic Science and Technology of China

Nature Communications, 2023, vol. 14, issue 1, 1-11

Abstract: Abstract Photocatalytic hydrogen evolution efficiency is limited due to unfavorable carrier dynamics and thermodynamic performance. Here, we propose to introduce electronegative molecules to build an electric double layer (EDL) to generate a polarization field instead of the traditional built-in electric field to improve carrier dynamics, and optimize the thermodynamics by regulating the chemical coordination of surface atoms. Based on theoretical simulation, we designed CuNi@EDL and applied it as the cocatalyst of semiconductor photocatalysts, finally achieved a hydrogen evolution rate of 249.6 mmol h−1 g−1 and remained stable after storing under environmental conditions for more than 300 days. The high H2 yield is mainly due to the perfect work function, Fermi level and Gibbs free energy of hydrogen adsorption, improved light absorption ability, enhanced electron transfer dynamics, decreased HER overpotential and effective carrier transfer channel arose by EDL. Here, our work opens up new perspectives for the design and optimization of photosystems.

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

Downloads: (external link)
https://www.nature.com/articles/s41467-023-38600-8 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:14:y:2023:i:1:d:10.1038_s41467-023-38600-8

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

DOI: 10.1038/s41467-023-38600-8

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 ().