质子交换膜中沿膜的透过面方向取向的曲折度低、连通性好、传输路径短的质子通道，能够大幅度提高质子交换膜燃料电池的功率输出。为在质子交换膜中构建这种理想的质子传导通道，本项目拟对具有高比表面积及长程连续性的一维、二维无机填料进行三步表面改性，即普鲁士蓝类似物的电沉积、聚多巴胺的吸附和质子传导组分的化学连接，使无机填料同时具有磁响应能力与质子传导能力。将改性填料与聚合物基体溶于溶剂，利用磁场辅助的溶液浇铸法制备透过面取向型有机-无机复合质子交换膜。在无机填料改性过程中引入的聚多巴胺涂层含有大量均匀分布的羟基，且具有抗氧化能力，有助于提高质子传导组分在改性填料表面分布的均匀性以及复合膜的应用耐久性。因此，本项目拟制备的透过面取向型有机-无机复合质子交换膜有望同时提高质子交换膜燃料电池的功率输出和使用寿命，为开发新型高效耐久的质子交换膜提供科学依据，具有重要的理论意义和实用价值。

The through-plane oriented proton-conducting channels with low tortuosity, good connection and short pathway in proton exchange membranes are able to substantially improve the power output of proton exchange membrane fuel cells. To construct such ideal proton-conducting channels in proton exchange membranes, the present proposal intends to modify the inorganic fillers with high specific surface area and long range continuity using three sequential processes, that are, the electrodeposition of prussian blue analogue, the adsorption of polydopamine and the chemical connection of proton-conducting portion, thereby endowing the modified filler with both magnetic responsive ability and proton conducive function. After dissolving the modified filler and polymer matrix in solvent, a magnetic assisted solution casting method is utilized to fabricate the through-plane oriented organic-inorganic composite proton exchange membranes. The polydopamine coating introduced during modification process contains large-amount even-distributed hydroxyl groups, and concurrently possesses antioxidative capability, which are beneficial to enhance the modification uniformity of the proton-conducting portion and the practical durability of the composite membrane, respectively. Therefore, the attempted through-plane oriented organic-inorganic composite proton exchange membranes in this proposal are promising to simultaneously improve the power output and service lifetime of proton exchange membrane fuel cells, providing scientific basis for developing novel efficient and durable proton exchange membranes, which is of important theoretical significance and practical availability.