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中文摘要：
商业化直接甲醇燃料电池用质子交换膜应达到的要求有：高于0．08S／cm的质子电导率、25℃时的甲醇扩散系数低于5．6×10^-6cm^2／s及良好的稳定性。综述了用聚合物涂覆、复合、共混及交联等改性Nation膜的方法。
英文摘要：
The proton exchange membranes used in the commercialized direct methanol fuel cell should meet the requirements such as the proton conductivity：higher than 0.08 S/cm,the diffusion coefficient at 25 ℃ ：lower than 5.6 × 10^-6 cm^2/s and excellent stability. The methods to modify the Nation membrane including coating, compounding, blending and cross-linkage were reviewed.
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