Dynamic Dissolution‐Deposition Equilibrium Enables Unprecedented HER Stability in Acidic PEMWE
Proton exchange membrane water electrolysis (PEMWE) holds substantial promise for effectively utilizing renewable energy to produce green hydrogen. However, it faces critical durability challenges due to acid-driven catalyst degradation under intermittent renewable power. Here, this study reports a dynamic dissolution-deposition equilibrium that achieves exceptional hydrogen evolution reaction (HER) stability through rational design of a high-entropy alloy-derived architecture. Dealloying FeCoNiNbPt HEA creates a porous scaffold with dual-functional components: an amorphous NbOx buffer suppressing metal dissolution, while multicomponent Pt<sub>3</sub>(FeCoNi) nanocrystals synergistically enhancing HER activity (137 mV@1 A cm<sup>-2</sup>, 2.5 × lower than Pt/C) that thermodynamically favors redeposition. This dynamic self-adaptive mechanism maintains equilibrium under harsh operating conditions, demonstrating exceptional durability (>2200 h @1 A cm<sup>-2</sup> and 1 000 000 cycles). The self-supported catalysts can be easily mass-produced with 8.87 wt.% Pt loading (60% reduction vs Pt/C), indicating its industrial applicability. The equilibrium-driven design paradigm opens new avenues for industrial proton-exchange-membrane devices operating under fluctuating power.
Authors
- Fu‐Kuo Chiang (ORCID: https://orcid.org/0000-0001-8705-6688)
- Haonan Zhong (ORCID: https://orcid.org/0009-0009-5849-3489)
- Xianzhen Wang
- Yuan Wu (ORCID: https://orcid.org/0000-0002-6953-791X)
- Houwen Chen (ORCID: https://orcid.org/0000-0001-6288-5711)
- Zhaoping Lü (ORCID: https://orcid.org/0000-0003-1463-8948)
- Chubin Wan (ORCID: https://orcid.org/0000-0002-9214-0283)
- Suihe Jiang (ORCID: https://orcid.org/0000-0001-7749-1782)
- Zhibin Li (ORCID: https://orcid.org/0000-0001-5504-7330)
- Rui Li (ORCID: https://orcid.org/0000-0002-8654-090X)
- Hui Wang (ORCID: https://orcid.org/0000-0002-5208-8329)
- Xiongjun Liu (ORCID: https://orcid.org/0000-0002-1663-4636)
- Xiaobin Zhang
Institutions
- Chongqing University (CN)
- Chongqing University of Science and Technology (CN)
- Northwestern Polytechnical University (CN)
- Shenzhen Polytechnic University (CN)
- National Institute of Clean and Low-Carbon Energy (CN)
- Advanced Technology & Materials (China) (CN)
- Shenyang Academy of Environmental Sciences (China) (CN)
- Beijing Advanced Sciences and Innovation Center (CN)
- Liaoning Academy of Materials
- Beijing Information Science & Technology University (CN)
- University of Science and Technology Beijing (CN)
Publication Details
- Journal
- Advanced Materials
- Published
- 2025-08-04
- DOI
- https://doi.org/10.1002/adma.202510703
- Citations
- 7
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 2.54
Funders
- National Natural Science Foundation of China
- Higher Education Discipline Innovation Project