Electrochemical properties of protic ionic liquids: correlation between open circuit potential for H2/O2 cells under non-humidified conditions and ΔpKa

Muhammed Shah Miran; Tomohiro Yasuda; Md. Abu Bin Hasan Susan; Kaoru Dokko; Masayoshi Watanabe

doi:10.1039/C3RA23354E

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Electrochemical properties of protic ionic liquids: correlation between open circuit potential for H₂/O₂ cells under non-humidified conditions and ΔpK_a†

Muhammed Shah Miran,‡^a Tomohiro Yasuda,^a Md. Abu Bin Hasan Susan,‡^a Kaoru Dokko^a and Masayoshi Watanabe*^a

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* Corresponding authors

^a Department of Chemistry and Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
E-mail: mwatanab@ynu.ac.jp
Fax: +81 45 339 3955
Tel: +81 45 339 3928

Abstract

Electrochemical measurements for a series of protic ionic liquids revealed that open circuit potential (OCP) for H₂/O₂ cells increases with increasing ΔpK_a of the constituent acid and base and passes through a maximum to gradually fall for further increase in the ΔpK_a, which indicates the reliance of the electrochemical activity on the persistence of non-ionic species and on the meagre proton activity due to strong N–H bonds.

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Article information

DOI: https://doi.org/10.1039/C3RA23354E
Article type: Communication
Submitted: 17 Dec 2012
Accepted: 25 Jan 2013
First published: 28 Jan 2013

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RSC Adv., 2013,3, 4141-4144

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Electrochemical properties of protic ionic liquids: correlation between open circuit potential for H₂/O₂ cells under non-humidified conditions and ΔpK_a

M. S. Miran, T. Yasuda, Md. A. B. H. Susan, K. Dokko and M. Watanabe, RSC Adv., 2013, 3, 4141 DOI: 10.1039/C3RA23354E

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