Guideline for designing carbon dioxide reduction electrocatalysts using metal sulfides

February 3, 2022

Multi-regression analysis is performed to develop electrocatalysts for CO2 utilization

A joint research group of Tokyo Institute of Technology, RIKEN CSRS, and Japan Agency for Marine-Earth Science and Technology performed multi-regression analysis of electroreduction of carbon dioxide (CO2) catalyzed by various metal sulfides, leading to developing a new guidance for designing catalysts using those materials.

Metal sulfides are expected as catalytic materials that can break the scaling law in CO2 reduction. The research group performed multi-regression analysis of the reduction activities, the crystal structure, and multiple electronic parameters of metal sulfides to identify the physical properties that determine activities of CO2 reduction. They then revealed that the activities are determined by the structural factors including bond lengths of metal sulfides for carbon monoxide (CO) production, while by the electronic factors such as electronegativities of metal centers for formate (HCOO-) production.

This study is expected to contribute to the development of catalysts for CO2 reduction using metal sulfides, materials that exist universally in nature.

Original article
The Journal of Physical Chemistry C doi:10.1021/acs.jpcc.1c08993
A. Yamaguchi, K. Arai, A. N. E. Aisnada, J.-E. Lee, N. Kitadai, R. Nakamura, M. Miyauchi,
"Multi-regression analysis of CO2 electroreduction activities on metal sulfides".
Ryuhei Nakamura
Team Leader
Biofunctional Catalyst Research Team