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Article Dans Une Revue Energy & Environmental Science Année : 2013

A super-efficient cobalt catalyst for electrochemical hydrogen production from neutral water with 80 mV overpotential

Résumé

Self-assembled molecular iron and cobalt catalysts (MP4N2, M = Fe, Co) bearing a multihydroxy-functionalized tetraphosphine ligand electrocatalyze H2 generation from neutral water on a mercury electrode at −1.03 and −0.50 V vs. NHE, respectively. Complex CoP4N2 displays extremely low overpotential (Eonset = 80 mV) while maintaining high activity and good stability. Bulk electrolysis of CoP4N2 in a neutral phosphate buffer solution at −1.0 V vs. NHE produced 9.24 × 104 mol H2 per mol cat. over 20 h, with a Faradaic efficiency close to 100% and without apparent deactivation.

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Dates et versions

hal-01529568 , version 1 (31-05-2017)

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Lin Chen, Mei Wang, Kai Han, Peili Zhang, Frederic Gloaguen, et al.. A super-efficient cobalt catalyst for electrochemical hydrogen production from neutral water with 80 mV overpotential. Energy & Environmental Science, 2013, 7 (1), pp.329 - 334. ⟨10.1039/C3EE42194E⟩. ⟨hal-01529568⟩
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