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Proton transport mechanism in ammonium dihydrogen phosphate

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Abstract

Coulometric, transient ionic current, electrical conductivity and IR investigations on polycrystalline and single crystal of ammonium dihydrogen phosphate (ADP) have been carried out. During coulometry, gases evolved both at the cathode (mostly H2) and at anode (O2) indicating the electrolysis of the H-O-H bridge. Transient ionic current study suggests the likely presence of two types of mobile ionic charge carriers (H+ and O2−) with mobilities of 1.3×10−4 and 3.3×10−5 cm2 V−1 sec−1. A comparative study of the IR spectra of the original and the electrolysed samples also supports the idea of possible electrolysis. The temperature dependence of the electrical conductivity have also been studied and interpreted in terms of possible deammoniation reaction and phase transformation. Finally, a mechanism for ionic transport in ADP is suggested.

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Authors and Affiliations

  1. Department of Physics, Banaras Hindu University, 221005, Varanasi, India

    S. Chandra & S. A. Hashmi

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  1. S. Chandra
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  2. S. A. Hashmi
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Chandra, S., Hashmi, S.A. Proton transport mechanism in ammonium dihydrogen phosphate. J Mater Sci 25, 2459–2464 (1990). https://doi.org/10.1007/BF00638042

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  • DOI: https://doi.org/10.1007/BF00638042

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