An efficient, formic acid selective CO2electrolyzer with a boron-doped diamond cathode

Jinglun Du, Andrea Fiorani, Yasuaki Einaga

Research output: Contribution to journalArticlepeer-review


We fabricated a CO2 electrolyzer in order to investigate the energy requirements and the electrical-to-chemical energy conversion efficiency obtained when using boron-doped diamond as the cathode. The main product in the electrochemical reduction of CO2 using a boron-doped diamond electrode is formic acid, with a faradaic efficiency of 96%. The electrical-to-chemical energy conversion efficiency was investigated at various bias voltages, and it reached 43%, very close to the predicted maximum value, at a cell voltage of 3 V. If the secondary products, hydrogen and carbon monoxide, are also considered, the total electrical-to-chemical energy conversion efficiency was as much as 45%. This journal is

Original languageEnglish
Pages (from-to)2590-2594
Number of pages5
JournalSustainable Energy and Fuels
Issue number10
Publication statusPublished - 2021 May 21

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology


Dive into the research topics of 'An efficient, formic acid selective CO<sub>2</sub>electrolyzer with a boron-doped diamond cathode'. Together they form a unique fingerprint.

Cite this