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  1. 原著論文

A long side chain imidazolium-based graft-type anion-exchange membrane: novel electrolyte and alkaline-durable properties and structural elucidation using SANS contrast variation

https://repo.qst.go.jp/records/80534
https://repo.qst.go.jp/records/80534
65e8b15c-22bf-44da-85d3-244d35411378
Item type 学術雑誌論文 / Journal Article(1)
公開日 2020-09-23
タイトル
タイトル A long side chain imidazolium-based graft-type anion-exchange membrane: novel electrolyte and alkaline-durable properties and structural elucidation using SANS contrast variation
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ journal article
アクセス権
アクセス権 metadata only access
アクセス権URI http://purl.org/coar/access_right/c_14cb
著者 Zhao, Yue

× Zhao, Yue

WEKO 888146

Zhao, Yue

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Yoshimura, Kimio

× Yoshimura, Kimio

WEKO 888147

Yoshimura, Kimio

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Mohamed Ahmed Mahmoud, Ahmed

× Mohamed Ahmed Mahmoud, Ahmed

WEKO 888148

Mohamed Ahmed Mahmoud, Ahmed

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Hwan-Chul, Yu

× Hwan-Chul, Yu

WEKO 888149

Hwan-Chul, Yu

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Okushima, Shun

× Okushima, Shun

WEKO 888150

Okushima, Shun

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Hiroki, Akihiro

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WEKO 888151

Hiroki, Akihiro

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Kishiyama, Yoshihiro

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WEKO 888152

Kishiyama, Yoshihiro

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Shishitani, Hideyuki

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WEKO 888153

Shishitani, Hideyuki

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Yamaguchi, Susumu

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WEKO 888154

Yamaguchi, Susumu

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Tanaka, Hirohisa

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WEKO 888155

Tanaka, Hirohisa

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Noda, Yohei

× Noda, Yohei

WEKO 888156

Noda, Yohei

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Koizumi, Satoshi

× Koizumi, Satoshi

WEKO 888157

Koizumi, Satoshi

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Radulescu, Aurel

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WEKO 888158

Radulescu, Aurel

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Maekawa, Yasunari

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WEKO 888159

Maekawa, Yasunari

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Zhao, Yue

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WEKO 888160

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Yoshimura, Kimio

× Yoshimura, Kimio

WEKO 888161

en Yoshimura, Kimio

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Okushima, Shun

× Okushima, Shun

WEKO 888162

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Hiroki, Akihiro

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WEKO 888163

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Maekawa, Yasunari

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WEKO 888164

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抄録
内容記述タイプ Abstract
内容記述 Newly designed styrylimidazolium-based grafted anion-exchange membranes (StIm-AEMs), in which imidazolium ionic groups are attached to styrene at the far side from the graft chains, were prepared by radiation-induced graft polymerization of p-(2-imidazoliumyl) styrene onto poly(ethylene-cotetrafluoloethylene) (ETFE) films, followed by N-alkylation and ion-exchange reactions. StIm-AEM having an ion exchange capacity (IEC) of 0.54 mmol g1 with a grafting degree (GD) of B18%, possesses practical conductivity (450 mS/cm) even with a very low water uptake (10%) and high stability over
600 h in a 1 M KOH solution at 80 1C. There exists a critical IEC (IECc) in the range of 0.7–0.8 mmol/g over which the membrane showed high water uptake, which resulted in pronounced susceptibility to hydrolysis. Using small-angle neutron scattering technique with a contrast variation method, we found
the hydrophilic phase in StIm-AEMs with IECs lower and higher than IECc shows ‘‘reverse-micelles’’ with water domains dispersed in the polymer matrix and ‘‘micelles’’ with graft polymer aggregates dispersed in the water matrix, respectively. The further analysis of micelle structures using the hard-sphere liquid model and Porod limit analysis reveals that the interfacial structures of ionic groups are essential for the electrochemical properties and durability of StIm-AEMs. In addition, StIm-AEM with an IEC of 0.95 mmol/g and the maximum power density of 80 mW/cm2 in the hydrazine hydrate fuel cell test, exhibited long-term durability under constant current (8.0 mA) up to 455 h, which, thus far, is the best durability at 80 C for platinum-free alkaline-type liquid fuel cells.
書誌情報 soft matter

巻 16, 号 35, p. 8128-8143, 発行日 2020-09
出版者
出版者 Royal Society of Chemistry
ISSN
収録物識別子タイプ ISSN
収録物識別子 1744-6848
DOI
識別子タイプ DOI
関連識別子 10.1039/D0SM00947D
関連サイト
識別子タイプ DOI
関連識別子 https://doi.org/10.1039/D0SM00947D
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