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落叶风尘

金虫 (知名作家)

[求助] 跪求翻译。。。

Proton exchange membrane (PEM) fuel cells that operate at high temperatures (>150 °C) are desirable for a number of reasons, such as higher tolerance of the anode to CO poisoning,increased catalyst efficiency, and easier thermal management.Fuel cells that operate at lower temperatures generally require water for proton transport. However, at higher temperatures, a polymer must be designed that strongly binds to water or has a different medium of proton transport. Polybenzimidazole (PBI) doped with H3PO4 has been established as a good polymer system for use in proton exchange membrane (PEM) fuel cells at high operation temperature and low humidity conditions.The only true requirement of the polymer in this system is to have a heteroatom that is capable of hydrogen bonding to H3PO4,which allows for a high uptake.
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zhangyang343

铁杆木虫 (职业作家)

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落叶风尘: 金币+5, 翻译EPI+1, 有帮助, 辛苦 2015-03-24 11:11:21
落叶风尘(RXMCDM代发): 金币+5 2015-03-29 15:15:53
这些聚合物在有机溶剂的溶解性良好、热稳定性高、H3PO4 的吸收率>300 wt % 。然而,以更经济的磺基取代苯膦氧化物基团,导致聚合物溶解度较低。基团中的新的双酚可以与其他双酚聚合产生高分子量聚合物,但是H3PO4吸收减少了。
2楼2015-03-23 10:48:42
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zhangyang343

铁杆木虫 (职业作家)

不好意思发错地方了了了了了了了了了了了了了了了了
3楼2015-03-23 10:50:41
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