Citation: Cuiping Lin, Chenchen Wang, Shaoqi Li, Qi Shen, Xiaodong Yang, Zengsheng Guo, Haiming Feng, Cuncheng Li, Yiqing Sun, Lifeng Hang. Pd@PtNiCoRuIr core-shell high-entropy alloys mesoporous nanospheres for temporally decoupled ammonia splitting by a Zn-NH₃ battery[J]. Chinese Chemical Letters, ;2026, 37(1): 111826. doi: 10.1016/j.cclet.2025.111826 shu

Pd@PtNiCoRuIr core-shell high-entropy alloys mesoporous nanospheres for temporally decoupled ammonia splitting by a Zn-NH₃ battery

Cuiping Lin ^a ,
Chenchen Wang ^a ,
Shaoqi Li ^a ,
Qi Shen ^{a, *,} ,
Xiaodong Yang ^a ,
Zengsheng Guo ^a ,
Haiming Feng ^b ,
Cuncheng Li ^{a, *,} ,
Yiqing Sun ^{a, *,} ,
Lifeng Hang ^{b, *,}

a.
School of Chemistry and Chemical Engineering, University of Jinan, Ji'nan 250022, China
b.
The Department of Medical Imaging, the Affiliated Guangdong Second Provincial General Hospital of Jinan University, Guangzhou 518037, China

Received Date: 16 April 2025
Revised Date: 9 September 2025
Accepted Date: 11 September 2025
Available Online: 11 September 2025

Figures(5)

Conversion of ammonia into hydrogen, a crucial pathway for the hydrogen economy, is severely constrained by the intricacy of the required equipment and the low efficiency. Herein, Pd@PtNiCoRuIr core-shell mesoporous bifunctional electrocatalysts were fabricated via a one-step wet-chemical reduction approach. By utilizing the limiting effect of triblock copolymers, gradient distribution control of six metal elements (Pd core and Pt/Ni/Co/Ru/Ir high-entropy alloys shell) was achieved, where the high-entropy alloy shell forms high-density active sites through lattice distortion effect. With the help of lattice distortion and mesoporous-confinement-enabled interfacial coupling effects, Pd@PtNiCoRuIr catalyst exhibited exceptional bifunctional performance in alkaline media: A low hydrogen evolution reaction (HER) overpotential of 30.5 mV at 10 mA/cm² and a high ammonia oxidation reaction (AOR) peak current density of 19.6 mA/cm² at 0.7 V vs. RHE, representing a 3.83-fold enhancement over commercial Pt/C. Moreover, a rechargeable Zn-NH₃ battery system was constructed and achieved 92.3% Faradaic efficiency (FE) for NH₃-to-H₂ conversion with outstanding stability at 16 mA/cm², thereby providing an innovative solution for efficient ammonia decomposition-based hydrogen production.
- Lattice distortion,
- High entropy alloy,
- Mesoporous architectures,
- Core-shell configurations,
- Zn-NH₃ battery
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Pd@PtNiCoRuIr core-shell high-entropy alloys mesoporous nanospheres for temporally decoupled ammonia splitting by a Zn-NH3 battery

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通讯作者: 陈斌, bchen63@163.com

Pd@PtNiCoRuIr core-shell high-entropy alloys mesoporous nanospheres for temporally decoupled ammonia splitting by a Zn-NH₃ battery