Aqueous electrocatalytic CO2 reduction using metal complexes dispersed in polymer ion gels

Shunsuke Sato; Brendon J. McNicholas; Robert H. Grubbs

doi:10.1039/D0CC00791A

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Aqueous electrocatalytic CO₂ reduction using metal complexes dispersed in polymer ion gels†

Shunsuke Sato,

^ab Brendon J. McNicholas

^a and Robert H. Grubbs

*^a

Author affiliations

* Corresponding authors

^a The Arnold and Mabel Beckman Laboratory of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA
E-mail: rhg@caltech.edu

^b Toyota Central Research and Development Laboratories, Inc, Nagakute, Aichi 480-1192, Japan

Abstract

We use fac-[Re(bpy)(CO)₃Cl] ([Re–Cl]) dispersed in polymer ion gel (PIG) ([Re]–PIG) to carry out electrocatalytic CO₂ reduction in water. Electrolysis at −0.68 V vs. RHE in a CO₂-saturated KOH and K₂CO₃ solution produces CO with over 90% Faradaic efficiency. The PIG electrode is readily combined with water oxidation catalysts to generate a full electrochemical cell. Additionally, we provide evidence that the PIG electrode can be implemented with other molecular catalysts.

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Article information

DOI: https://doi.org/10.1039/D0CC00791A
Article type: Communication
Submitted: 01 Feb 2020
Accepted: 11 Mar 2020
First published: 16 Mar 2020

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Chem. Commun., 2020,56, 4440-4443

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Aqueous electrocatalytic CO₂ reduction using metal complexes dispersed in polymer ion gels

S. Sato, B. J. McNicholas and R. H. Grubbs, Chem. Commun., 2020, 56, 4440 DOI: 10.1039/D0CC00791A

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