Preparation of Fast Proton-Conducting Phosphate Glass-Derived Hydrogels and their Electrochemical Properties

Abstract:

When fine-sized 45ZnO·55P2O5 glass powders were mixed with water, hydration immediately occurred, resulting in the formation of a viscous hydrogel. 31P MAS-NMR spectra showed that the hydrogel contains orthophosphates and long polyphosphates. 45ZnO·55P2O5 glass-derived hydrogel (45ZP gel) showed high conductivities of 9.9 mS/cm at 30 °C. The conductivities were related to the proton amount in the hydrogel. The electric double-layer capacitor (EDC) cell for the 45ZP gel showed no oxidation-reduction processes in the range of 0~1 V and the specific capacities of 2.40 F/g. The possibility as an EDC electrolyte may be related to the conductivities of the hydrogels.

• Periodical: Advanced Materials Research (Volumes 15-17)
• Pages: 327-332
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.15-17.327
• Online since: February 2006
• Authors: T. Akamatsu, Toshihiro Kasuga, Masayuki Nogami
• Keywords: Hydration, Hydrogel, Proton Conductor, Zinc Phosphate Glass

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