Mo-decorated Ni anode

300 h sulfur-stable

Combines Mo-mediated sacrificial capture with a hierarchical hybrid-pore structure, enabling in-situ regeneration and markedly extended stable operation in sulfur-containing fuels.

Zhao, Kai · Yiwei, Yang · Jinze, Li · Jiakun, Mei · Jie, Luo · Jun, Li · Zhang, Yongliang · Liu, Ting · Xu, Qing · Chen, Min · Li, Jingjing

International Journal of Hydrogen Energy 2026

Specifications

H₂S adsorption energy (Mo)
{'zh': '−1.07', 'en': '−1.07'} eV
H₂S concentration reduction
{'zh': '14', 'en': '14'} ppm
Stable operation time
{'zh': '300', 'en': '300'} h
Degradation rate
{'zh': '0.4', 'en': '0.4'} mVh⁻¹
Stable operation limit extension (hydrogen)
{'zh': '2.6', 'en': '2.6'}
Stable operation limit extension (methanol)
{'zh': '2.3', 'en': '2.3'}

Advantages

Preferentially traps H₂S

Mo exhibits significantly stronger H₂S adsorption (−1.07 eV) than Ni (−0.61 eV), acting as a sacrificial trap to suppress nickel sulfidation.

Lowers local sulfur chemical potential

By preferentially adsorbing H₂S, Mo lowers the local sulfur chemical potential, making Ni less prone to sulfidation.

Hybrid pores reduce H₂S

The hierarchical hybrid-pore microstructure reduces H₂S concentrations from 120 to 14 ppm, further mitigating sulfur poisoning.

In-situ regeneration

Sulfidized Mo phases dynamically regenerate, ensuring continuous catalysis and preventing irreversible deactivation.

Applications