Numerical modelling of MCFC cathode degradation in terms of morphological variations

被引：12

作者：

Bozzini, Benedetto ^{[1
]}

Maci, Stefano ^{[1
]}

Sgura, Iuonne ^{[2
]}

Lo Presti, Roberto ^{[3
]}

Simonetti, Elisabetta ^{[3
]}

机构：

[1] Univ Salento, Dipartimento Ingn Innovaz, I-73100 Lecce, Italy

[2] Univ Salento, Dipartimento Matemat, I-73100 Lecce, Italy

[3] ENEA Casaccia, Dipartimento TER, Ctr Ric Casaccia, I-00060 Rome, Italy

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2011年 / 36卷 / 16期

关键词：

MCFC; Numerical simulations; Cathode; NiO; Degradation; CARBONATE FUEL-CELL; STACK; PERFORMANCE; BEHAVIOR; ELECTRODE;

D O I：

10.1016/j.ijhydene.2010.07.110

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This paper describes the numerical modelling of a key material-stability issue within the realm of Molten Carbonate Fuel Cells (MCFC). Differential models have been developed for the 2D and 3D distributions of current density as well as peroxide and carbon dioxide concentrations. By suitable variations of the integration domain - based on the agglomerate concept - one can describe the morphological and attending electrocatalytic evolution of porous NiO electrodes. On the basis of electrochemical data recorded during the operation of a laboratory MCFC, we have shown that this model is able to rationalise the evolution of cathode conditions leading to both improvements of electrocatalytic performance - such as lithiation - and degradation - such as agglomeration -. Copyright (C) 2010, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：10403 / 10413

页数：11

共 41 条

[1] Physico-mathematical model of the gas flow in the channel between the separator plate and the anode of a fuel cell with molten carbonate electrolyte [J].