An in–situ Organic-Inorganic Hybrid Methanol-Permeation resistant PEM with Great Mechanical Stability Retention Capacity
An in–situ Organic-Inorganic Hybrid Methanol-Permeation resistant PEM with Great Mechanical Stability Retention Capacity
复制标题
具有良好机械稳定性保持能力的原位有机-无机杂化抗甲醇渗透质子交换膜
DOI：
10.1002/slct.201601875
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发表时间：
2017
期刊：
影响因子：
2.1
通讯作者：
Cai Weiwei
中科院分区：
文献类型：
--
作者：
Li Jing;Xiong Jie;Ma Liying;Xu Guoxiao;Jiang Yao;Luo Xingying;Cai Weiwei
提出了基于超支化聚酰胺质子传导高分子的质子交换膜（PEM）制备的原位有机-无机杂化策略。原位有机无机杂化策略对质子电导率和甲醇渗透性的影响与传统的有机-无机杂化策略相似，因此在机械稳定性方面表现出更好的保留能力。在这项工作中，微量的 TiO2 纳米粒子作为模型无机填料，先前开发的高分子聚酰胺质子导体的甲醇渗透性进一步降低了约 10%，该导体已经表现出比商用 Nafion 膜更高的质子电导率和甲醇电阻率。 20 %，而质子电导率仅略有衰减。更重要的是，原位杂化膜的机械强度几乎与原始聚合物膜相同，而传统的杂化策略会导致拉伸强度损失 25%。
Anin‐situ organic‐inorganic hybrid strategy is proposed for proton exchange membrane (PEM) preparation based on a hyperbranched polyamide proton conductive macromolecule. With similar effects on proton conductivity and methanol permeability as that of the conventional organic‐inorganic hybrid strategy, thein‐situ organic‐inorganic hybrid one showed much better retention capacity on mechanical stability. With trace amount of TiO2nanoparticle, acting as a model inorganic filler in this work, methanol permeability of a previously developed macromolecular polyamide proton conductor, which already showed higher proton conductivity and methanol resistivity than the commercial Nafion membrane, is further reduced by ca. 20 % while the proton conductivity is only slightly decayed. More importantly, mechanical strength of thein‐situ hybrid membrane remained almost the same as that of the original polymeric membrane while the conventional hybrid strategy would lead to a 25 % tensile strength loss.