再生可能エネルギーの貯蔵に向けた CO₂ 電気化学還元によるギ酸製造

抄録

For the storage of the renewable energy using formic aid, the combination of the direct formic acid fuel cell which can directly produce the electric power using formic acid and the CO₂ electrochemical reduction (ERC) which can produce the formic acid using the electric power derived from the renewable energy and CO₂ emitted from direct formic acid fuel cell has been proposed. In order to achieve this process, improvement of the formic acid production rate is required. It has been known that formic acid could be obtained at high yield Sn catalyst at ERC, however, production rate was still low due to the high overpotential. In this study, the supported Sn catalyst has been produced for the enhancement of the production rate of the formic acid by ERC. It was found that supported Sn catalyst showed higher CO₂ reduction current comparing to that obtained by conventional Sn nano particles.