Abstract
Abstract A novel highly viscous hydrogel electrolyte with high proton conductivity was prepared via hydration of zinc metaphosphate glass powders. The hydrogel showed a high electrical conductivity of ≈5 mS cm−1 at room temperature due to proton hopping between P–OH groups and water molecules. The hydrogel exhibited a low self-discharge rate. Chronoamperometric measurements indicated that the hydrogel has fast charge-discharge capability.
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