Enhanced Conductivity of Anion-Exchange Membrane by Incorporation of Quaternized Cellulose Nanocrystal

被引：69

作者：

Cheng, Xia ^{[1
]}

Wang, Jianchuan ^{[1
,2
]}

Liao, Yunchuan ^{[1
]}

Li, Cunpu ^{[1
]}

Wei, Zidong ^{[1
]}

机构：

[1] Chongqing Univ, Sch Chem & Chem Engn, Chongqing 400044, Peoples R China

[2] Sichuan Univ, State Key Lab Polymer Mat Engn, Chengdu 610065, Sichuan, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2018年 / 10卷 / 28期

基金：

中国国家自然科学基金;

关键词：

anion-exchange membrane; cellulose; ion conductivity; cell performance; composite membrane; FUEL-CELL APPLICATIONS; POLYMER ELECTROLYTE MEMBRANES; COMPOSITE MEMBRANES; IONIC LIQUID; FACILE CONSTRUCTION; HYBRID MEMBRANES; GRAPHENE OXIDE; CROSS-LINKING; POLYSULFONE; HYDROXIDE;

D O I：

10.1021/acsami.8b05298

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

High ion conductivity of anion-exchange membrane is essential for the operation of alkaline anion-exchange membrane fuel cell. In this work, we demonstrated an effective strategy to enhance the conductivity of anion-exchange membrane (AEM), by incorporation of quaternized cellulose nanocrystal (QCNC) for the first time. Morphology observation demonstrated a uniform distribution of QCNC within QPPO matrix, as well as a clear QCNC network, which led to significant enhancement in hydroxide conductivities of composite membranes, for example, 2 wt % QCNC/QPPO membrane possessed a conductivity of 160% (60 mS cm(-1), @80 degrees C) of that of QPPO. Furthermore, H-2/O-2 cell performance of membrane electrode assembly based on 2 wt % QCNC/QPPO AEM showed an excellent peak power density of 392 mV cm(-2) at 60 degrees C without back pressure, whereas that of neat QPPO AEM was only 270 mV cm(-2).

引用

页码：23774 / 23782

页数：9

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