Cellulose nanofiber-embedded sulfonated poly (ether sulfone) membranes for proton exchange membrane fuel cells
Cellulose nanofiber-embedded sulfonated poly (ether sulfone) membranes for proton exchange membrane fuel cells
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用于质子交换膜燃料电池的纤维素纳米纤维嵌入磺化聚醚砜膜
DOI：
10.1016/j.carbpol.2017.12.074
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发表时间：
2017
影响因子：
11.2
通讯作者：
XL XuR LiCX TangH WangXP ZhuangY LiuWM Kang
中科院分区：
文献类型：
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作者：
XL XuR LiCX TangH WangXP ZhuangY LiuWM Kang
将纤维素纳米纤维嵌入到磺酸化聚醚砜基体中，以提高质子交换膜（PEM）的保水性和质子导电性。采用静电感应辅助溶液喷吹纺丝法制备醋酸纤维素纳米纤维，通过水解得到纤维素纳米纤维。研究了聚合物的形态、热稳定性和力学性能。结果表明，复合膜的质子传导率、吸水率和甲醇渗透率均有所提高。随着纳米纤维的加入，复合膜的亲水性逐渐提高。当纳米纤维的含量为5wt%时，最高的质子传导率为0.13S/cm（80 °C，100%RH）。因此，纤维素可作为质子交换膜的支撑材料，提高质子交换膜的性能，在直接甲醇燃料电池（DMFC）中具有潜在的应用前景。
Cellulose nanofibers were embedded into sulfonated poly (ether sulfone) matrix to heighten the water retention and proton conductivity of proton exchange membranes (PEMs). Cellulose nanofibers were obtained by hydrolyzing cellulose acetate nanofibers, which were prepared via electrostatic-induction-assisted solution blow spinning. Morphology, thermal stability, and mechanical properties of the PEMs were investigated. The results showed that proton conductivity, water uptake, and methanol permeability of the composite membranes were improved. Hydrophilicity of the composite membranes was gradually improved with the addition of nanofibers. When the content of nanofibers was 5 wt%, the highest proton conductivity was 0.13 S/cm (80 °C, 100% RH). Therefore, the cellulose nanofiber could be used as support materials to enhance the performance of proton exchange membranes, the composite membranes have potential application in Direct methanol fuel cells (DMFCs).