フラーレンの光反応を用いる新しい光電気化学蓄電池

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書誌事項

タイトル別名
  • A New-Type Photovoltaic Cell Using Photochemical Reaction of Fullerene
  • フラーレン ノ ヒカリ ハンノウ オ モチイル アタラシイ ヒカリ デンキ カガク チクデンチ

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抄録

Fullerene, C60, is readily reduced to its anion radical, C60•−, in nitrobenzene (NB) that contains a tetraphenylborate ion (TPB−) under irradiation with visible light. Fullerene excited by visible light withdraws one electron from TPB− to form C60•− and generated TPB radical decomposes. C60•− can be stored for several days without any changes in deaerated NB. However, as soon as the NB solution containing C60•− is bubbled with air, C60•− immediately oxidizes to C60. Using this photochemical reaction of C60, we have developed a new-type of photovoltaic cell that can generate and store electricity. We call this cell a photoelectrochemical condenser (PEC). The anodic reaction of the PEC is the oxidation of C60•− to C60; although many reduction reactions are possible, the cathodic reaction is chosen to be the reduction of Fe3+ to Fe2+ in an aqueous phase. When the PEC was irradiated with visible light ranging from 400 nm to 700 nm (23.4 mW cm−2), the electromotive force was measured to be approximately 1100 mV, and an electric current of approximately 2 mA was observed. In this paper, we present the PEC and discuss its performance for generating and storing electricity.

収録刊行物

  • Electrochemistry

    Electrochemistry 82 (9), 736-742, 2014

    公益社団法人　電気化学会

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