Citation: Jiawei Ge, Hao Wan, Feng Gao, Heyuan Tian, Jiangying Qu, Xian Wang, Junjie Ge. B and Sr co-doping suppressed Pt oxidative passivation enables fast water oxidation in PEMWE[J]. Chinese Chemical Letters, ;2026, 37(10): 111657. doi: 10.1016/j.cclet.2025.111657 shu

B and Sr co-doping suppressed Pt oxidative passivation enables fast water oxidation in PEMWE

Jiawei Ge ^{a, b, 1} ,
Hao Wan ^{b, 1} ,
Feng Gao ^a ,
Heyuan Tian ^b ,
Jiangying Qu ^{a, *,} ,
Xian Wang ^{b, *,} ,
Junjie Ge ^{b, *,}

a.
Dongguan Key Laboratory of Low-Carbon Recycling and Utilization, School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China
b.
School of Chemistry and Materials Science, University of Science & Technology of China, Hefei 230026, China

qujy@dgut.edu.cn

wangxian@ustc.edu.cn

gejunjie@ustc.edu.cn

Received Date: 19 May 2025
Revised Date: 18 July 2025
Accepted Date: 30 July 2025
Available Online: 5 August 2025

Figures(5)

The large-scale deployment of proton-exchange membrane water electrolysis (PEMWE) is plagued by the exclusively rely on Ir for anode water oxidation. Platinum (Pt), as one of the few acid stable elements, has long been ignored as a possible alternative due to its surface oxidation and passivation. In this study, we incorporate boron (B) and strontium (Sr) into Pt to achieve notable promotion in catalytic activity and long-term anti-passivation feature. While B serves as an electron reservoir by donating charge to Pt sites, Sr induces compressive strain to suppress lattice oxygen formation. The synergistic effects of B and Sr effectively modulate Pt-O orbital coupling from oxidative passivation and confer the best water oxidation activity and stability. Notably, the B,Sr-Pt catalyst achieves a low overpotential of 308 mV at 10 mA/cm² in 0.5 mol/L H₂SO₄, approaching those of the Ir based catalysts. In PEMWE devices, B,Sr-Pt exhibits an operating voltage of 2.061V at 1 A/cm² and operate stably for 240h at 1 A/cm². These findings offer a promising strategy for enhancing the OER efficiency and durability of Pt-based catalysts by effectively addressing Pt site passivation.
- Oxygen evolution reaction,
- Durable Pt catalysts,
- Electron reservoir,
- Compressive strain,
- Pt oxidation passivation
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