Analysis of high temperature polymer electrolyte membrane fuel cell electrodes using electrochemical impedance spectroscopy

被引：43

作者：

Mamlouk, M. ^{[1
]}

Scott, K. ^{[1
]}

机构：

[1] Newcastle Univ, Sch Chem Engn & Adv Mat, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

来源：

ELECTROCHIMICA ACTA | 2011年 / 56卷 / 16期

基金：

英国工程与自然科学研究理事会;

关键词：

Phosphoric acid; Polybenzimidazole; Fuel cell; Electrochemical impedance spectroscopy; Frequency response analysis; ACID DOPED POLYBENZIMIDAZOLE; OXYGEN REDUCTION; PHOSPHORIC-ACID; CATALYTIC LAYER; PLANE DISPLAY; CONDUCTIVITY; PERFORMANCE; KINETICS; CARBON; ORR;

D O I：

10.1016/j.electacta.2011.03.056

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

An electrochemical impedance spectroscopy (EIS) study of electrodes in a phosphoric acid loaded polybenzimidazole (PBI) membrane fuel cell is reported. Using EIS, the effect of electrode parameters such as Pt catalyst wt%, acid doping in PBI and PTFE baesd electrodes and catalyst heat treatment on kinetic and mass transport characteristics is characterised. The influence of cell parameters of current load, temperature and oxidant gas on response is demonstrated and interpreted using an equivalent circuit model. For polarisable electrodes under small to medium steady-state current operation, the model was capable of identifying electrodes with the best kinetic or mass transport behaviour and classifying behaviour in terms of relative performance. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：5493 / 5512

页数：20

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