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Title: Coordination polymer glass from a protic ionic liquid: proton conductivity and mechanical properties as an electrolyte
Authors: Ogawa, Tomohiro
Takahashi, Kazuki
Nagarkar, Sanjog S.
Ohara, Koji
Hong, You-lee
Nishiyama, Yusuke
Horike, Satoshi  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0001-8530-6364 (unconfirmed)
Author's alias: 小川, 知弘
高橋, 一輝
尾原, 幸治
西山, 裕介
堀毛, 悟史
Issue Date: 28-May-2020
Publisher: Royal Society of Chemistry (RSC)
Journal title: Chemical Science
Volume: 11
Issue: 20
Start page: 5175
End page: 5181
Abstract: High proton conducting electrolytes with mechanical moldability are a key material for energy devices. We propose an approach for creating a coordination polymer (CP) glass from a protic ionic liquid for a solid-state anhydrous proton conductor. A protic ionic liquid (dema)(H2PO4), with components which also act as bridging ligands, was applied to construct a CP glass (dema)0.35[Zn(H2PO4)2.35(H3PO4)0.65]. The structural analysis revealed that large Zn–H2PO4−/H3PO4 coordination networks formed in the CP glass. The network formation results in enhancement of the properties of proton conductivity and viscoelasticity. High anhydrous proton conductivity (σ = 13.3 mS cm−1 at 120 °C) and a high transport number of the proton (0.94) were achieved by the coordination networks. A fuel cell with this CP glass membrane exhibits a high open-circuit voltage and power density (0.15 W cm−2) under dry conditions at 120 °C due to the conducting properties and mechanical properties of the CP glass.
Description: 加湿不要で水素イオンを高速伝導する配位高分子ガラスの合成に成功 --車載用燃料電池の電解質材料として期待--. 京都大学プレスリリース. 2020-05-14.
Coordination polymer glass provides solid support for hydrogen fuel cells. 京都大学プレスリリース. 2020-05-14.
Rights: © The Royal Society of Chemistry 2020. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
URI: http://hdl.handle.net/2433/250857
DOI(Published Version): 10.1039/D0SC01737J
PubMed ID: 34122974
Related Link: https://www.kyoto-u.ac.jp/ja/research-news/2020-05-14
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