Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Influence of Chiral Compounds on the Oxygen Evolution Reaction (OER) in the Water Splitting Process

Version 1 : Received: 2 July 2020 / Approved: 3 July 2020 / Online: 3 July 2020 (09:09:56 CEST)

A peer-reviewed article of this Preprint also exists.

Gazzotti, M.; Stefani, A.; Bonechi, M.; Giurlani, W.; Innocenti, M.; Fontanesi, C. Influence of Chiral Compounds on the Oxygen Evolution Reaction (OER) in the Water Splitting Process. Molecules 2020, 25, 3988. Gazzotti, M.; Stefani, A.; Bonechi, M.; Giurlani, W.; Innocenti, M.; Fontanesi, C. Influence of Chiral Compounds on the Oxygen Evolution Reaction (OER) in the Water Splitting Process. Molecules 2020, 25, 3988.

Journal reference: Molecules 2020, 25, 3988
DOI: 10.3390/molecules25173988

Abstract

Results are presented concerning the influence on the water splitting process of enantiopure tartaric acid present in bulk solution. Stainless steel and electrodeposited nickel are used as working electrode (WE) surface. The latter is obtained by electrodeposition on the two poles of a magnet. The influence and role played by the chiral compound in solution has been assessed by comparing the current values, in cyclic voltammetry (CV) experiments, recorded in the potential range at which oxygen evolution reaction (OER) occurs. In the case of tartaric acid and nickel WE a spin polarization of about 4 % is found. The use of the chiral environment (bulk solution) and ferromagnetic chiral Ni electrode allows for observing the OER at a more favourable potential: about 50 mV (i.e. a cathodic, less positive, shift of the potential at which the oxygen evolution is observed).

Subject Areas

spin dependent electrochemistry; water splitting; nickel; chirality; OER

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