Sulfonated poly(ether ether ketone) membranes crosslinked with sulfonic acid containing benzoxazine monomer as proton exchange membranes

被引:58
作者
Ye, Yun-Sheng [1 ]
Yen, Ying-Chieh [1 ]
Cheng, Chih-Chia [1 ]
Chen, Wen Yi [2 ]
Tsai, Li-Tuan [2 ]
Chang, Feng-Chih [1 ]
机构
[1] Natl Chiao Tung Univ, Inst Appl Chem, Hsinchu 30050, Taiwan
[2] Ind Technol Res Inst, Mat & Chem Res Labs, Chutung, Taiwan
关键词
Benzoxazine; Proton exchange membrane; SPEEK; POLYIMIDE MEMBRANES; WATER SORPTION; CHAIN-LENGTH; X-RAY; POLYMERIZATION; COPOLYMERS; CONDUCTION; TRANSPORT; POLYMERS; POLYBENZIMIDAZOLE;
D O I
10.1016/j.polymer.2009.04.072
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The incorporation of benzoxazine (Ba) or sulfonic acid containing benzoxazine (SBa) as a crosslinking agent in SPEEK proton exchange membrane (PEM) can substantially improve the SPEEK membrane performance. The SPEEK-SBa membranes give higher effective selectivity than corresponding SPEEK-Ba membranes under close crosslinker loading and thus are more suitable to be used in direct methanol fuel cells. The best achieved SPEEK-SBa composition (SBa40) gives reasonable proton conductivity (0.91 x 10(-2) S cm(-1)) but significantly lower methanol permeability (6.5 x 10(-8) 52 cm(-1)). The achieved effective selectivity (Phi = SPEEK-SBa40: 14.0 x 10(4) S s cm(-3)) is substantially higher than the plain SPEEK (Phi = 7.24 x 10(4) S s cm(-3)) which has great potential for practical applications in DMFCs. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:3196 / 3203
页数:8
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