Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed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

Mirko Gazzotti
,
Andrea Stefani
,
Marco Bonechi
,
Walter Giurlani
ORCID logo ,
Massimo Innocenti
ORCID logo ,
Claudio Fontanesi
* ORCID logo
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.

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).

Keywords

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

Subject

Chemistry and Materials Science, Electrochemistry

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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