膜
壳聚糖
碳纳米管
材料科学
复合数
化学工程
质子交换膜燃料电池
硫酸
色散(光学)
热稳定性
电导率
离子交换
纳米复合材料
质子
纳米技术
复合材料
离子
化学
有机化学
物理化学
工程类
冶金
物理
生物化学
光学
量子力学
作者
Jie Wang,Chunli Gong,Sheng Wen,Hai Li,Caiqin Qin,Chuanxi Xiong,Lijie Dong
标识
DOI:10.1016/j.ijhydene.2019.01.194
摘要
Recently, fabricating low-cost and high-performance proton exchange membranes (PEMs) with carbon nanotubes (CNTs) and chitosan (CS) have been extensively studied. Herein, we reported a facile but effective method to prepare CS-based PEM with polydopamine (PDA) functionalized CNTs ([email protected]). The CS/[email protected] composite membranes were prepared by incorporating [email protected] into CS matrix followed by ion cross-linking with sulfuric acid. Due to the hydrogen bonding between the CS matrix and PDA coating, the thermal, mechanical and oxidation stability of the CS/[email protected] composite membranes were improved. Moreover, the proton conductivity was also improved owing to the improved dispersion of [email protected] in the CS matrix and the electrostatic interaction between [email protected] and CS matrix. The maximum proton conductivity can reach to as high as 0.028 S cm−1 under 80 °C with 2 wt% loading of [email protected] These results indicate that the CS/[email protected] composite membranes have great potential to be used as PEMs in fuel cells.
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