Biomass‐Derived CoFe@N‐Doped Graphitic Carbon Core–Shell Electrocatalysts for Low‐Energy Hydrogen Production via Methanol‐Assisted Water Electrolysis DOI
Rajathsing Kalusulingam,

Dileep B. Pawara,

Krishnan Ravi

и другие.

Advanced Sustainable Systems, Год журнала: 2025, Номер unknown

Опубликована: Июнь 1, 2025

Abstract Bimetallic CoFe nanoparticles encapsulated in nitrogen‐doped graphitic carbon (CoFe@NGC) are synthesized via hydrochar polymerization of furfural followed by pyrolysis. The resulting core–shell heterostructures obtained at pyrolysis temperatures 500, 600, and 700 °C. Among them, CoFe@NGC‐700 exhibits optimal bifunctional electrocatalytic activity, delivering overpotentials 1.47 V for the oxygen evolution reaction (OER), 1.37 methanol oxidation (MOR), 0.151 hydrogen (HER) a current density 10 mA cm −2 . In two‐electrode configuration, achieved low cell voltage 1.66 overall water electrolysis (HER||OER) 1.0 m KOH. Under methanol‐assisted conditions (HER||MOR) KOH + MeOH, further decreased to 1.45 V, with Faradaic efficiency 97%. These results highlight potential as sustainable, high‐performance electrocatalyst energy‐efficient production.

Язык: Английский

Biomass‐Derived CoFe@N‐Doped Graphitic Carbon Core–Shell Electrocatalysts for Low‐Energy Hydrogen Production via Methanol‐Assisted Water Electrolysis DOI
Rajathsing Kalusulingam,

Dileep B. Pawara,

Krishnan Ravi

и другие.

Advanced Sustainable Systems, Год журнала: 2025, Номер unknown

Опубликована: Июнь 1, 2025

Abstract Bimetallic CoFe nanoparticles encapsulated in nitrogen‐doped graphitic carbon (CoFe@NGC) are synthesized via hydrochar polymerization of furfural followed by pyrolysis. The resulting core–shell heterostructures obtained at pyrolysis temperatures 500, 600, and 700 °C. Among them, CoFe@NGC‐700 exhibits optimal bifunctional electrocatalytic activity, delivering overpotentials 1.47 V for the oxygen evolution reaction (OER), 1.37 methanol oxidation (MOR), 0.151 hydrogen (HER) a current density 10 mA cm −2 . In two‐electrode configuration, achieved low cell voltage 1.66 overall water electrolysis (HER||OER) 1.0 m KOH. Under methanol‐assisted conditions (HER||MOR) KOH + MeOH, further decreased to 1.45 V, with Faradaic efficiency 97%. These results highlight potential as sustainable, high‐performance electrocatalyst energy‐efficient production.

Язык: Английский

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