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A super-efficient cobalt catalyst for electrochemical hydrogen production from neutral water with 80 mV overpotential
Vise andre og tillknytning
2014 (engelsk)Inngår i: Energy & Environmental Science, ISSN 1754-5692, E-ISSN 1754-5706, Vol. 7, nr 1, s. 329-334Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Self-assembled molecular iron and cobalt catalysts (MP4N2, M = Fe, Co) bearing a multihydroxy-functionalized tetraphosphine ligand electrocatalyze H-2 generation from neutral water on a mercury electrode at -1.03 and -0.50 V vs. NHE, respectively. Complex CoP4N2 displays extremely low overpotential (E-onset = 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 x 10(4) mol H-2 per mol cat. over 20 h, with a Faradaic efficiency close to 100% and without apparent deactivation.

sted, utgiver, år, opplag, sider
2014. Vol. 7, nr 1, s. 329-334
Emneord [en]
Bulk electrolysis, Cobalt Catalyst, Faradaic efficiencies, Good stability, Mercury electrodes, Phosphate buffer solutions, Self-assembled, Tetraphosphines
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Identifikatorer
URN: urn:nbn:se:kth:diva-141066DOI: 10.1039/c3ee42194eISI: 000329550700020Scopus ID: 2-s2.0-84890525626OAI: oai:DiVA.org:kth-141066DiVA, id: diva2:695536
Forskningsfinansiär
Swedish Research CouncilKnut and Alice Wallenberg Foundation
Merknad

QC 20140211

Tilgjengelig fra: 2014-02-11 Laget: 2014-02-07 Sist oppdatert: 2017-12-06bibliografisk kontrollert

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