膜
傅里叶变换红外光谱
材料科学
热稳定性
质子交换膜燃料电池
扫描电子显微镜
化学工程
复合数
壳聚糖
极限抗拉强度
电导率
复合材料
化学
生物化学
工程类
物理化学
作者
Fuqiang Hu,Ting Li,Fei Zhong,Sheng Wen,Genwen Zheng,Chunli Gong,Caiqin Qin,Hai Liu
摘要
Abstract A composite proton exchange membrane chitosan (CS)/attapulgite (ATP) was prepared with the organic–inorganic compounding of ATP and CS. The composite membranes were characterized by scanning electron microscope (SEM), X‐ray diffraction (XRD), and fourier transform infrared spectroscopy (FTIR). The mechanical properties, thermal stability, water uptake, and proton conductivity of the composite membranes were fully investigated. The composite membranes exhibited an enhanced mechanical property, dimensional and thermal stability compared to CS membrane, owing to the interface interaction between ATP and CS. The maximum tensile strength of 53.1 MPa and decomposition temperature of 223.4°C was obtained, respectively. More importantly, the proton conductivity of the composite membrane is also enhanced, the composite membrane with 4 wt% ATP content (CS/ATP‐4) exhibited the highest proton conductivity of 26.2 mS cm −1 at 80°C with 100% relative humidity, which is 25.1% higher than pure CS membrane. These results may explore a simple and green strategy to prepare CS‐based PEMs, which have a great potential in the application of proton exchange membrane fuel cells.
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