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[求助] 求助一个关于ECSA的测试小疑惑

求助各位老师和同学:最近在学习使用Ir-Ta DSA 电极,想利用双电层电容法测试其电化学比表面积,发现随着扫速越来越大,CV的轮廓越来越窄,同时图中红色方框内的阳极电流不增反降,是因为DSA电极可暴露的外表面的双电层也在降低吗?

求助一个关于ECSA的测试小疑惑
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