Protic Ionic Liquid-Derived Coordination Polymer Glass for Anhydrous Proton Conductor with Moldability

24 January 2020, Version 1
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

Herein, we focused on coordination polymer (CP) glass as a hybrid, soft electrolyte to meet these criteria. We applied a protic ionic liquid of which components work also as bridging ligand to construct CP structure with Zn2+ ions. The structural analysis of the CP glass reveals that network formation results in enhancement of the properties of proton conductivity and viscoelasticity. The CP glass features a high anhydrous proton conductivity (σ = 13.3 mS cm−1 at 120 °C) and high transport number of proton (0.94). Fabricated fuel cell with this CP glass membrane exhibits a high open circuit voltage (0.96 V) and a power density (0.15 W cm−2) under dry conditions at 120 °C.

Keywords

coordination polymer
glass phase
proton conductors

Supplementary materials

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ESI Zn-dema-H2PO4
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