Galvanic replacement-induced preparation of bloom-like Pt<sub>23</sub>Ni<sub>77</sub> for methanol coupled efficient hydrogen production

Zhao, Jin; Wang, Jinjin; Wang, Ying; Zhang, Junming; Luo, Ergui; Lv, Baoliang; Hu, Tianjun; Jia, Jianfeng

doi:10.1039/d3nr06359c

Nanoscale

2024

DOI: 10.1039/d3nr06359c

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Galvanic replacement-induced preparation of bloom-like Pt₂₃Ni₇₇ for methanol coupled efficient hydrogen production

Jin Zhao,

Jinjin Wang,

Ying Wang

et al.

Abstract: Galvanic replacement reaction (GRR) leverages the difference in metal reduction potentials for regulating the structure of nanomaterials. The crucial aspect of constructing highly active catalysts lies in the precise manipulation...

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Harvesting Green Hydrogen from the Deep Blue: Seawater‐Compatible SnSe‐P Decorated Graphene‐CNTs Based Electrocatalyst Under Universal pH

Pahuja,

Dastider,

Jyoti

et al. 2024

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Fabrication of cost‐effective and robust metal‐based electrocatalysts for hydrogen evolution reactions (HER) across the entire pH range has garnered significant attention in harvesting renewable energy. Herein, the fabrication of 3D high‐surface Ni Foam‐Graphene‐Carbon Nanotubes (NGC) decorated with phosphorous‐inserted tin selenide (SnSe‐P) showcases unprecedented HER activity with minimal overpotentials across all pH ranges (52 mV in acidic, 93 mV in basic, and 198 mV in neutral conditions@10 mA cm−2) and stability at 1 A cm−2 for 72 h. The as‐designed catalyst shows a low overpotential of 122 mV@10 mA cm−2 in alkaline seawater, achieved through controlled electronic distribution on Sn site after incorporation of P in NGC‐SnSe‐P. A stable cell voltage of 1.56 V@10 mA cm⁻2 is achieved for prolonged time in 1 m KOH toward overall water electrolysis. Experimental and theoretical investigation reveals that the insertion of P in layered SnSe enables s orbitals of H* and p orbitals of Sn to interact, favoring the adsorption of the H* intermediate. A renewable approach is adopted by using silicon solar cells (η = 10.66%) to power up the electrolyzer, yielding a solar‐to‐hydrogen (STH) conversion efficiency of 7.70% in 1 m KOH and 5.65% in alkaline seawater, aiming toward green hydrogen production.

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Harvesting Green Hydrogen from the Deep Blue: Seawater‐Compatible SnSe‐P Decorated Graphene‐CNTs Based Electrocatalyst Under Universal pH

Pahuja,

Dastider,

Jyoti

et al. 2024

Small

View full text Add to dashboard Cite

show abstract

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Galvanic replacement-induced preparation of bloom-like Pt₂₃Ni₇₇ for methanol coupled efficient hydrogen production

Abstract: Galvanic replacement reaction (GRR) leverages the difference in metal reduction potentials for regulating the structure of nanomaterials. The crucial aspect of constructing highly active catalysts lies in the precise manipulation...

Cited by 1 publication

References 43 publications

Harvesting Green Hydrogen from the Deep Blue: Seawater‐Compatible SnSe‐P Decorated Graphene‐CNTs Based Electrocatalyst Under Universal pH

Harvesting Green Hydrogen from the Deep Blue: Seawater‐Compatible SnSe‐P Decorated Graphene‐CNTs Based Electrocatalyst Under Universal pH

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Galvanic replacement-induced preparation of bloom-like Pt23Ni77 for methanol coupled efficient hydrogen production

Abstract: Galvanic replacement reaction (GRR) leverages the difference in metal reduction potentials for regulating the structure of nanomaterials. The crucial aspect of constructing highly active catalysts lies in the precise manipulation...

Cited by 1 publication

References 43 publications

Harvesting Green Hydrogen from the Deep Blue: Seawater‐Compatible SnSe‐P Decorated Graphene‐CNTs Based Electrocatalyst Under Universal pH

Harvesting Green Hydrogen from the Deep Blue: Seawater‐Compatible SnSe‐P Decorated Graphene‐CNTs Based Electrocatalyst Under Universal pH

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Resources

About

Galvanic replacement-induced preparation of bloom-like Pt₂₃Ni₇₇ for methanol coupled efficient hydrogen production