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小小的西瓜籽

金虫 (著名写手)

[求助] 关于铂碳电极的制备问题,请教大神!

材料:PtC20%,5% nifion, 碳纸(带填平层)
已尝试的工艺:2mg PtC , 8ul Nifion,1ml 乙醇。 超声30分钟后,喷涂法喷涂在2平方厘米的碳纸上。
结果:做成空气电池后漏液(主要从空气扩散孔地方漏出),第二性能不稳定,初始开路电压才1.28V, 20mA放电电压1.1V。过一段时间后急剧下降。
已经有虫子提出的建议:1.是否应该对碳纸进行预处理,如果用PTFE预处理应该怎么处理?2.喷涂完成后,要加热干燥处理么?如果是按照一些热心虫友说的加热到350度,是否会导致铂碳催化剂性能的改变?

恳求虫友给个已经有的方案,我刚刚做这个PtC电极,不懂,切盼!!!
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