Direct ethanol fuel cell using hydrotalcite clay as a hydroxide ion conductive electrolyte.

Tadanaga, Kiyoharu; Furukawa, Yoshihiro; Hayashi, Akitoshi; Tatsumisago, Masahiro · Adv Mater · 2010

basic_science · Level V

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Abstract

An alkaline-type direct ethanol fuel cell (DEFC) using a natural clay electrolyte with non-platinum catalysts is proposed. So-called hydrotalcite clay, Mg–Al layered double hydroxide intercalated with CO₃²⁻, is shown to be a hydroxide ion conductor. An alkaline-type DEFC using this natural clay as the electrolyte and aqueous solution of ethanol and potassium hydroxide as a source of fuel exhibits excellent electrochemical performance from room temperature to 80 °C.

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