论孔隙收缩在气体扩散电极中的作用。

On the role of pore constrictions in gas diffusion electrodes.

作者信息

Bozzetti Michele, Berger Anne, Girod Robin, Chen Yen-Chun, Büchi Felix N, Gasteiger Hubert A, Tileli Vasiliki

机构信息

Institute of Materials, Ecole Polytechnique Federale de Lausanne, Station 12, 1015, Lausanne, Switzerland.

Chair of Technical Electrochemistry, Department of Chemistry and Catalysis Research Center, Technische Universität München, Germany.

出版信息

Chem Commun (Camb). 2022 Aug 4;58(63):8854-8857. doi: 10.1039/d2cc02844a.

DOI:10.1039/d2cc02844a

PMID:35851630

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9350991/

Abstract

Water management by gas diffusion electrodes is a fundamental aspect of the performance of electrochemical cells. Herein, we introduce the characteristic constrictions size as a descriptor for microporous layers (MPL). This parameter is calculated by volumetric analysis of focused ion beam nanotomography and compared to mercury intrusion porosimetry measurements.

摘要

通过气体扩散电极进行水管理是电化学电池性能的一个基本方面。在此，我们引入特征收缩尺寸作为微孔层（MPL）的一个描述符。该参数通过聚焦离子束纳米断层扫描的体积分析来计算，并与压汞孔隙率测量结果进行比较。