Citation: Yunbo ZHU, Linxiang ZHOU, Chaoyang SHI, Jie YU, Danyang WEI, Mingli XU. Stable Fe—P structure catalysts: Enabled by a strong coordination strategy and high-efficiency oxygen electrocatalysis performance[J]. Chinese Journal of Inorganic Chemistry, ;2026, 42(9): 2021-2032. doi: 10.11862/CJIC.20260080 shu

Stable Fe—P structure catalysts: Enabled by a strong coordination strategy and high-efficiency oxygen electrocatalysis performance

Yunbo ZHU ^{1, 2} ,
Linxiang ZHOU ¹ ,
Chaoyang SHI ¹ ,
Jie YU ³ ,
Danyang WEI ^1,, ,
Mingli XU ^1,,

1.
Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
2.
Yunnan Provincial Transportation Science Research Institute Co., Ltd., Kunming 650011, China
3.
Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China

Corresponding author: Danyang WEI, weidy1107@163.com Mingli XU, xumingli0326@126.com
Received Date: 10 March 2026
Revised Date: 18 July 2026

Figures(8)

FeP and Fe₂P active species with stable Fe—P structures were successfully constructed through a strong coordination strategy between phosphate groups in phytic acid and Fe³⁺. The synthesized N-doped porous carbon (NC) supported FeP and Fe₂P catalyst (FeP/Fe₂P-NC) maintained the carrier morphology of NC. The X-ray photoelectron spectroscopy (XPS) analysis indicated that P atoms optimized the electronic structure of the Fe sites through electron regulation, significantly enhancing the electrocatalytic performance. In a 0.1 mol·L^-1 KOH electrolyte, the catalyst exhibited superior oxygen reduction reaction (ORR) activity (half-wave potential E_1/2=0.861 V), significantly outperforming the commercial Pt/C catalyst, along with excellent stability, methanol tolerance, and electrochemically active surface area. Additionally, its oxygen evolution reaction (OER) overpotential and charge transfer resistance were lower than those of the control samples. When applied in a zinc-air battery, the catalyst demonstrated excellent open-circuit voltage, peak power density, and high specific capacity. It maintained stable charge-discharge performance during long-term cycling tests.
- stable Fe—P structure,
- carbon nanoparticles,
- oxygen reduction reaction,
- oxygen evolution reaction,
- zinc-air battery
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