Chitosan-based composite membranes containing chitosan-coated carbon nanotubes for polymer electrolyte membranes

被引:39
|
作者
Ou, Ying [1 ,2 ]
Tsen, Wen-Chin [3 ]
Gong, Chunli [1 ,2 ]
Wang, Jie [1 ]
Liu, Hai [1 ,2 ]
Zheng, Genwen [1 ,2 ]
Qin, Caiqin [1 ]
Wen, Sheng [1 ,2 ]
机构
[1] Hubei Engn Univ, Sch Chem & Mat Sci, Hubei Collaborat Innovat Ctr Biomass Convers & Ut, Xiaogan 432000, Hubei, Peoples R China
[2] Hubei Univ, Sch Mat Sci & Engn, Wuhan, Hubei, Peoples R China
[3] Lee Ming Inst Technol, Dept Fash & Design, Taipei, Taiwan
基金
中国国家自然科学基金;
关键词
carbon nanotubes; chitosan; fuel cells; polymer electrolyte membranes; FUEL-CELL APPLICATIONS; PROTON-EXCHANGE MEMBRANES; GRAPHENE OXIDE; CONDUCTIVITY; NANOCOMPOSITES;
D O I
10.1002/pat.4171
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Considering the poor dispersion and inert ionic conduction ability of carbon nanotubes (CNTs), functionalization of CNTs is a critical issue for their application in polymer electrolyte membranes. Herein, CNTs were functionalized by the polyelectrolyte, chitosan (CS), via a facile noncovalent surface-deposition method. The obtained CS-coated CNTs (CS@CNTs) were then incorporated into the CS matrix and fabricated composite membranes. The CS coating can enhance the compatibility between CNTs and the matrix, thus ensuring the homogenous dispersion of CS@CNTs and effectively improved the mechanical properties of the composites. Moreover, the CS coating can make CS@CNTs act as an additional proton-conducting pathway through the membranes. The CS/CS@CNTs-1 composite shows the highest proton conductivity of 3.46x10(-2)S cm(-1) at 80 degrees C, which is about 1.5-fold of the conductivity of pure CS membrane. Consequently, the single cell equipped with CS/CS@CNTs-1 membrane exhibits a peak power density of 47.5mWcm(-2), which is higher than that of pure CS (36.1 mWcm(-2)).
引用
收藏
页码:612 / 622
页数:11
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