Long-Term Continuous Conversion of CO2 to Formic Acid Using Boron-Doped Diamond Electrodes
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2018-05-23 |
| Journal | ACS Sustainable Chemistry & Engineering |
| Authors | Norihito Ikemiya, Keisuke Natsui, Kazuya Nakata, Yasuaki Einaga |
| Institutions | Keio University, Tokyo University of Science |
| Citations | 56 |
Abstract
Section titled āAbstractāThe long-term durability of boron-doped diamond electrodes (BDD) used continuously in the electrochemical conversion of CO2 to formic acid was investigated. Although the Faradaic efficiency (FE) for the production of formic acid decreased with increasing electrolysis time, the FE was easily recovered by electrochemical oxidation of the BDD electrodes in H2SO4, Na2SO4 or K2SO4 solutions. For practical application, the long-term production of formic acid using BDD electrodes can be successfully accomplished just by successive polarity reversal of plus and minus terminals. Furthermore, at a current density of ā20 mA cm-2, the rate of production reached 328 Ī¼mol h-1 cm-2, which is the highest value ever obtained using plate electrodes. Consequently, we found that BDD electrodes are ideal for industrial application of CO2 reduction.