采用Nafion粘结剂的PEMFC氧电极研究

研究了聚合物电解质燃料电池（PEMFC）中以Nation溶液取代PTFE乳液作粘结剂的效果．并对催化剂层内Nafion含量进行了优化，同时探讨了气体工作压力和离子交换膜的影响，实验发现：1．使用Nafion溶液后显著提高电池性能，Nafion含量为2mg·cm－2时性能技好；2．气体压力增大改善了电池位能；3．使用Nafion115膜的电池性能优于使用Nafion117膜的电池．要进一步提高电池性能，减小欧姆控制区的斜率是必要的．

Study on the Performance of Nafion-bonded oxygen Electrode in PEMFC

In the process of making electrodes in polymer electrolyte membrane fuel cells(PEMFC), the conventionally used PTFE is replaced by Nafion solution as the binder, whose content in the catalyst layer is optimised. The effects of gas pressure and electrolyte membrane on the performance of oxygen electrode are also studied. It is found that: (1) the performance is improved using Nafion as the binder and the electrode with 2mg?cm-2 Nafion in the catalyst shows the best performance; (2) higher gas pressure improves the preformance of the cell: (3) the performance of the cell with Nafion 115 membrane is better than that with Nafion 117 membrane.