|
1
|
Zhang Z, Wu W, Chen S, Wang Z, Tan Y, Chen W, Guo F, Chen R, Cheng N. Directed Dual Charge Pumping Tunes the d-Orbital Configuration of Pt Cluster Boosting Hydrogen Evolution Kinetic. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307135. [PMID: 38126901 DOI: 10.1002/smll.202307135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 12/10/2023] [Indexed: 12/23/2023]
Abstract
Achieving high catalytic activity with a minimum amount of platinum (Pt) is crucial for accelerating the cathodic hydrogen evolution reaction (HER) in proton exchange membrane (PEM) water electrolysis, yet it remains a significant challenge. Herein, a directed dual-charge pumping strategy to tune the d-orbital electronic distribution of Pt nanoclusters for efficient HER catalysis is proposed. Theoretical analysis reveals that the ligand effect and electronic metal-support interactions (EMSI) create an effective directional electron transfer channel for the d-orbital electrons of Pt, which in turn optimizes the binding strength to H*, thereby significantly enhancing HER efficiency of the Pt site. Experimentally, this directed dual-charge pumping strategy is validated by elaborating Sb-doped SnO2 (ATO) supported Fe-doped PtSn heterostructure catalysts (Fe-PtSn/ATO). The synthesized 3%Fe-PtSn/ATO catalysts exhibit lower overpotential (requiring only 10.5 mV to reach a current density of 10 mA cm- 2), higher mass activity (28.6 times higher than commercial 20 wt.% Pt/C), and stability in the HER process in acidic media. This innovative strategy presents a promising pathway for the development of highly efficient HER catalysts with low Pt loading.
Collapse
Affiliation(s)
- Zeyi Zhang
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, Zurich, CH-8057, Switzerland
| | - Wei Wu
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Suhao Chen
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Zichen Wang
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Yangyang Tan
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Wei Chen
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Fei Guo
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Runzhe Chen
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Niancai Cheng
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| |
Collapse
|