Test of Surface Roughness for Bipolar plates for Vanadium Redox Flow Batteries and Biological Fuel cells

T. Hickmann
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Abstract

In order to define the surface roughness, it is necessary to define the parameters. Common parameters are the arithmetic average called Ra and the average of maximum peak to valley height of profile called Rz. The arithmetic and averaged maximum peak height are looked for in order to describe the surface quality of graphite compound panels from different manufacturing and aftertreatment processes. The corresponding measurements are taken relatively locally so that either a wide range of measuring points or always the same points have to be checked in order to obtain comparable, meaningful results. The surface roughness has a significant impact to the contact resistivity of the graphite material to the connecting parts like electrodes [8].
钒氧化还原液流电池和生物燃料电池双极板表面粗糙度测试
为了定义表面粗糙度,必须定义参数。常用的参数是称为Ra的算术平均值和称为Rz的剖面最大峰谷高度的平均值。为了描述不同制造工艺和后处理工艺的石墨复合板的表面质量,寻找了计算算法和平均最大峰高。相应的测量是在相对局部的地方进行的,因此,为了获得可比较的、有意义的结果,必须检查范围广泛的测量点或总是相同的测量点。表面粗糙度对石墨材料与电极等连接部件的接触电阻率有显著影响[8]。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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