CO2-free electric power circulation via direct charge and discharge using the glycolic acid/oxalic acid redox couple

R. Watanabe, M. Yamauchi, M. Sadakiyo, R. Abe, T. Takeguchi

研究成果: Article査読

20 被引用数 (Scopus)

抄録

The establishment of an efficient electric power distribution method is the key to realising a sustainable society driven by renewable-energy-based electricity, such as solar photovoltaics, wind turbine, and wave electricity, in view of supply instability. Here, we demonstrate an electric power circulation method that does not emit CO2 and is based on the glycolic acid (GC)/oxalic acid (OX) redox couple. Direct electric power storage in GC ensures considerably high energy density storage and good transportability through OX electroreduction with significantly high selectivity (>98%) using pure anatase-type titania (TiO2) spheres under mild conditions in the potential region of -0.5 to -0.7 V vs. the RHE at 50 °C. The most desirable characteristic of this electroreduction is the suppression of hydrogen evolution even in acidic aqueous media (Faraday efficiency of 70-95%, pH 2.1). We also successfully generated power without CO2 emissions via selective electrooxidation of GC with an alkaline fuel cell.

本文言語English
ページ(範囲)1456-1462
ページ数7
ジャーナルEnergy and Environmental Science
8
5
DOI
出版ステータスPublished - 2015 5 1
外部発表はい

ASJC Scopus subject areas

  • 環境化学
  • 再生可能エネルギー、持続可能性、環境
  • 原子力エネルギーおよび原子力工学
  • 汚染

フィンガープリント

「CO<sub>2</sub>-free electric power circulation via direct charge and discharge using the glycolic acid/oxalic acid redox couple」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル