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Issue 1, 2014
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A super-efficient cobalt catalyst for electrochemical hydrogen production from neutral water with 80 mV overpotential

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Abstract

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.

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

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Article information


Submitted
01 Jul 2013
Accepted
18 Oct 2013
First published
22 Oct 2013

Energy Environ. Sci., 2014,7, 329-334
Article type
Communication

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

L. Chen, M. Wang, K. Han, P. Zhang, F. Gloaguen and L. Sun, Energy Environ. Sci., 2014, 7, 329
DOI: 10.1039/C3EE42194E

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