arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2208.04643cond-mat.mtrl-sci
收藏

高填充导电Polymer复合材料的压力无关平面电导率测量

Pressure-Independent Through-Plane Electrical Conductivity Measurements of Highly Filled Conductive Polymer Composites

Thomas Larsen, Tom Larsen, Søren J. Andreasen, Jesper D. C. Christiansen

摘要:

高度填充的导电聚合物复合材料(CPC)由于其有用的电性能而广泛用于诸如聚合物电解质膜燃料电池和氧化还原液流电池的双极板材料、电磁干扰屏蔽和传感器的应用中。用于测定这种高度填充的CPC的贯通平面电导率$\left(σ_{\rm tp} \right)$的常用方法在电极和样品之间施加导电碳纸,同时施加外部压力以改善电接触。我们表明,测量的$σ_{\rm tp}$的压力依赖性可以通过使用液体金属,如镓铟共晶合金(EGaIn)作为接触材料来消除。结果表明,EGaIn降低了接触电阻,并导致三到五倍大的$σ_{\rm tp}$相比,碳纸接触和压力高达20巴的测量。

英文摘要:

Highly filled conductive polymer composites (CPCs) are widely used in applications such as bipolar plate materials for polymer electrolyte membrane fuel cells and redox flow batteries, electromagnetic interference shielding and sensors due to their useful electrical properties. A common method for determining through-plane electrical conductivities $\left(σ_{\rm tp} \right)$ of such highly filled CPCs applies a conductive carbon paper between electrodes and sample with application of external pressure to improve electrical contact. We show the pressure-dependence of the measured $σ_{\rm tp}$ can be eliminated by using a liquid metal such as the gallium-indium eutectic alloy (EGaIn) as contact material. Results indicate that EGaIn reduces contact resistances and cause three to five times larger $σ_{\rm tp}$ compared to measurements with carbon paper contacts and pressures up to 20 bar.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑