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A high conductivity ultrathin anion-exchange membrane with 500+h alkali stability for use in alkaline membrane fuel cells that can achieve 2 W cm-2 at 80 °C
被引:189
作者:

Wang, Lianqin
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机构:
Univ Surrey, Dept Chem, Guildford GU2 7XH, Surrey, England Univ Surrey, Dept Chem, Guildford GU2 7XH, Surrey, England

Bellini, Marco
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机构:
CNR, Ist Chim Composti OrganoMetall, ICCOM, Polo Sci Area, Via Madonna Piano 10, Sesto Fiorentino, Italy Univ Surrey, Dept Chem, Guildford GU2 7XH, Surrey, England

Miller, Hamish A.
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CNR, Ist Chim Composti OrganoMetall, ICCOM, Polo Sci Area, Via Madonna Piano 10, Sesto Fiorentino, Italy Univ Surrey, Dept Chem, Guildford GU2 7XH, Surrey, England

Varcoe, John R.
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Univ Surrey, Dept Chem, Guildford GU2 7XH, Surrey, England Univ Surrey, Dept Chem, Guildford GU2 7XH, Surrey, England
机构:
[1] Univ Surrey, Dept Chem, Guildford GU2 7XH, Surrey, England
[2] CNR, Ist Chim Composti OrganoMetall, ICCOM, Polo Sci Area, Via Madonna Piano 10, Sesto Fiorentino, Italy
基金:
英国工程与自然科学研究理事会;
关键词:
VINYLBENZYL TRIMETHYLAMMONIUM HYDROXIDE;
RADIATION GRAFTED MEMBRANES;
POLYMER ELECTROLYTES;
CHEMICAL-STABILITY;
FUNCTIONAL-GROUPS;
PERFORMANCE;
WATER;
DEGRADATION;
CHALLENGES;
CATALYSTS;
D O I:
10.1039/c8ta04783a
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
This article describes the development of a sub-30 m thick LDPE-based radiation-grafted anion-exchange membrane (RG-AEM) with high performance characteristics when fully hydrated. This RG-AEM had a OH- anion conductivity of 200 mS cm(-1) (80 degrees C in 100% relative humidity (RH) environments), which led to a H-2/O-2 anion-exchange membrane fuel cell (AEMFC) performance of 2.0 W cm(-2) (80 degrees C, RH = 92% environments, a PtRu/C anode, and a Pt/C cathode) and a H-2/air (CO2-free) AEMFC peak power density of 850 mW cm(-2) with a (non-platinum-group) Ag/C cathode electrocatalyst. When hydrated in a RH = 100% N-2 (CO2-free) atmosphere, the OH- form of this RG-AEM shows <7% degradation after 500 h at 80 degrees C, with the extent of degradation being highly similar to that when measured using three different techniques (decrease in conductivity, decrease in ammonium content as measured using Raman spectroscopy, and decrease in ion-exchange capacity).
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页码:15404 / 15412
页数:9
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