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 [1 ]
Bellini, Marco [2 ]
Miller, Hamish A. [2 ]
Varcoe, John R. [1 ]
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).
引用
收藏
页码:15404 / 15412
页数:9
相关论文
共 46 条
[1]   Single-site and nanosized Fe-Co electrocatalysts for oxygen reduction: Synthesis, characterization and catalytic performance [J].
Bambagioni, Valentina ;
Bianchini, Claudio ;
Filippi, Jonathan ;
Lavacchi, Alessandro ;
Oberhauser, Werner ;
Marchionni, Andrea ;
Moneti, Simonetta ;
Vizza, Francesco ;
Psaro, Rinaldo ;
Dal Santo, Vladimiro ;
Gallo, Alessandro ;
Recchia, Sandro ;
Sordelli, Laura .
JOURNAL OF POWER SOURCES, 2011, 196 (05) :2519-2529
[2]   Varying the microphase separation patterns of alkaline polymer electrolytes [J].
Chen, Chen ;
Pan, Jing ;
Han, Juanjuan ;
Wang, Ying ;
Zhu, Liang ;
Hickner, Michael A. ;
Zhuang, Lin .
JOURNAL OF MATERIALS CHEMISTRY A, 2016, 4 (11) :4071-4081
[3]   Alkali-stable and highly anion conducting poly(phenylene oxide)s carrying quaternary piperidinium cations [J].
Dang, Hai-Son ;
Jannasch, Patric .
JOURNAL OF MATERIALS CHEMISTRY A, 2016, 4 (30) :11924-11938
[4]   The critical relation between chemical stability of cations and water in anion exchange membrane fuel cells environment [J].
Dekel, Dario R. ;
Willdorf, Sapir ;
Ash, Uri ;
Amar, Michal ;
Pusara, Srdjan ;
Dhara, Shubhendu ;
Srebnik, Simcha ;
Diesendruck, Charles E. .
JOURNAL OF POWER SOURCES, 2018, 375 :351-360
[5]   Review of cell performance in anion exchange membrane fuel cells [J].
Dekel, Dario R. .
JOURNAL OF POWER SOURCES, 2018, 375 :158-169
[6]   Effect of Water on the Stability of Quaternary Ammonium Groups for Anion Exchange Membrane Fuel Cell Applications [J].
Dekel, Dario R. ;
Amar, Michal ;
Willdorf, Sapir ;
Kosa, Monica ;
Dhara, Shubhendu ;
Diesendruck, Charles E. .
CHEMISTRY OF MATERIALS, 2017, 29 (10) :4425-4431
[7]   Water - A key parameter in the stability of anion exchange membrane fuel cells [J].
Diesendruck, Charles E. ;
Dekel, Dario R. .
CURRENT OPINION IN ELECTROCHEMISTRY, 2018, 9 :173-178
[8]   Degradation of radiation grafted anion exchange membranes tethered with different amine functional groups via removal of vinylbenzyl trimethylammonium hydroxide [J].
Espiritu, Richard ;
Golding, Bernard T. ;
Scott, Keith ;
Mamlouk, Mohamed .
JOURNAL OF POWER SOURCES, 2018, 375 :373-386
[9]   Degradation of radiation grafted hydroxide anion exchange membrane immersed in neutral pH: removal of vinylbenzyl trimethylammonium hydroxide due to oxidation [J].
Espiritu, Richard ;
Golding, Bernard T. ;
Scott, Keith ;
Mamlouk, Mohamed .
JOURNAL OF MATERIALS CHEMISTRY A, 2017, 5 (03) :1248-1267
[10]   Hyper-branched anion exchange membranes with high conductivity and chemical stability [J].
Ge, Qianqian ;
Liu, Yazhi ;
Yang, Zhengjin ;
Wu, Bin ;
Hu, Min ;
Liu, Xiaohe ;
Hou, Jianqiu ;
Xu, Tongwen .
CHEMICAL COMMUNICATIONS, 2016, 52 (66) :10141-10143