Microstructure of porous composite electrodes generated by the discrete element method

被引：43

作者：

Liu, Xiaoxing ^{[1
]}

Martin, Christophe L. ^{[1
]}

Delette, Gerard ^{[2
]}

Laurencin, Jerome ^{[2
]}

Bouvard, Didier ^{[1
]}

Delahaye, Thibaud ^{[2
]}

机构：

[1] CNRS, Grenoble INP UJF GPM2, Lab SIMAP, F-38402 St Martin Dheres, France

[2] CEA Grenoble, DRT LITEN, F-38054 Grenoble 9, France

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 04期

关键词：

Sintering; SOFC; Discrete simulation; OXIDE FUEL-CELLS; ANODE MICROSTRUCTURE; PORE-SIZE; SOFC; MODEL; RECONSTRUCTION; SIMULATIONS; PERFORMANCE; REDUCTION; ZIRCONIA;

D O I：

10.1016/j.jpowsour.2010.09.033

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：

Typical microstructures of LSM/YSZ NiO/YSZ Ni/YSZ composite electrodes are simulated by the discrete element method The numerical microstructures are generated by taking into account in a realistic manner the sintering process This allows complex microstructures such as Mayers or microstructures containing pore formers to be obtained NiO particles in the NiO/YSZ composite electrodes are reduced to Ni Reduction is carried out with the discrete element formalism which allows particle rearrangement to be taken Into account We show that the mechanical percolation of the YSZ phase plays an important role during the reduction of NiO The various numerical microstructures generated by sintering and reduction are analyzed to evaluate important microstructural features such as macroscopic porosity pore surface area and Triple Phase Boundary length (c) 2010 Elsevier BV All rights reserved

引用

页码：2046 / 2054

页数：9

共 55 条

[1] Three-dimensional random resistor-network model for solid oxide fuel cell composite electrodes
Abbaspour, Ali
Luo, Jing-Li
Nandakumar, K.
[J]. ELECTROCHIMICA ACTA, 2010, 55 (12) : 3944 - 3950
[2] Geometrical modeling of microstructure of solid oxide fuel cell composite electrodes
Ali, Abbaspour
Wen, X.
Nandakumar, K.
Luo, B. Jingli
Chuang, Karl T.
[J]. JOURNAL OF POWER SOURCES, 2008, 185 (02) : 961 - 966
[3] Synthesis of highly porous yttria-stabilized zirconia by tape-casting methods
Boaro, M
Vohs, JM
Gorte, RJ
[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2003, 86 (03) : 395 - 400
[4] Bouvard D, 1996, J AM CERAM SOC, V79, P666, DOI 10.1111/j.1151-2916.1996.tb07927.x
[5] Prediction of the elastic response of polymer based nanocomposites:: a mean field approach and a discrete simulation
Chabert, E
Dendievel, R
Gauthier, C
Cavaillé, JY
[J]. COMPOSITES SCIENCE AND TECHNOLOGY, 2004, 64 (02) : 309 - 316
[6] Percolation theory to predict effective properties of solid oxide fuel-cell composite electrodes
Chen, Daifen
Lin, Zijing
Zhu, Huayang
Kee, Robert J.
[J]. JOURNAL OF POWER SOURCES, 2009, 191 (02) : 240 - 252
[7] INITIAL SINTERING OF ALUMINA AND HEMATITE
COBLE, RL
[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1958, 41 (02) : 55 - 62
[8] Micro-modelling of solid oxide fuel cell electrodes
Costamagna, P
Costa, P
Antonucci, V
[J]. ELECTROCHIMICA ACTA, 1998, 43 (3-4) : 375 - 394
[9] Geometrical modeling of the triple-phase-boundary in solid oxide fuel cells
Deng, XH
Petric, A
[J]. JOURNAL OF POWER SOURCES, 2005, 140 (02) : 297 - 303
[10] Composition and porosity graded La2-xNiO4+δ (x ≥ 0) interlayers for SOFC:: Control of the microstructure via a sol-gel process
Fontaine, M. L.
Laberty-Robert, C.
Ansart, F.
Tailhades, P.
[J]. JOURNAL OF POWER SOURCES, 2006, 156 (01) : 33 - 38

← 1 2 3 4 5 6 →