Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 엄석기 | - |
dc.date.accessioned | 2020-09-22T05:33:28Z | - |
dc.date.available | 2020-09-22T05:33:28Z | - |
dc.date.issued | 2019-09 | - |
dc.identifier.citation | JOURNAL OF CATALYSIS, v. 377, Page. 465-479 | en_US |
dc.identifier.issn | 0021-9517 | - |
dc.identifier.issn | 1090-2694 | - |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S0021951719303768?via%3Dihub | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/154042 | - |
dc.description.abstract | Nanoscale transport characteristics and catalyst utilization of vertically aligned carbon nanotube (VACNT) catalyst layers (CLs) are evaluated using a fully statistical modeling approach based on the inherent random nature of the catalyst layer structures for fuel cell applications. Composite morphological structures of the catalyst layers are stochastically modeled with a 95% confidence level, and transport phenomena inside the catalyst layers are simulated using the D3Q19 lattice Boltzmann method (LBM). The effective diffusion coefficient of VACNT catalyst layers is predicted to be higher than that of the conventional catalyst layer, despite a relatively small pore diameter and a low-Knudsen diffusion coefficient. Consequently, the VACNT catalyst layers exhibit improved catalyst utilization compared to the conventional catalyst layers. These statistical results obtained from a series of numerical experiments confirm that the PEFC catalyst layers containing the VACNT catalyst supports can provide more efficient reactant transport, resulting in enhanced catalyst utilization for electrochemical reactions. (C) 2019 Elsevier Inc. All rights reserved. | en_US |
dc.description.sponsorship | This work was supported by the Korea Evaluation Institute of Industrial Technology [grant number 201800000000249] and the National Research Foundation of Korea [grant numbers 201800000002799 and 201800000002384]. | en_US |
dc.language.iso | en | en_US |
dc.publisher | ACADEMIC PRESS INC ELSEVIER SCIENCE | en_US |
dc.subject | Polymer electrolyte fuel cell | en_US |
dc.subject | Vertically aligned carbon nanotube | en_US |
dc.subject | Nanoscale transport phenomenon | en_US |
dc.subject | Catalyst utilization | en_US |
dc.subject | Lattice Boltzmann method | en_US |
dc.subject | Statistical analysis | en_US |
dc.title | Nanoscale transport characteristics and catalyst utilization of vertically aligned carbon nanotube catalyst layers for fuel cell applications: Comprehensive stochastic modeling of composite morphological structures | en_US |
dc.type | Article | en_US |
dc.relation.volume | 377 | - |
dc.identifier.doi | 10.1016/j.jcat.2019.07.053 | - |
dc.relation.page | 465-479 | - |
dc.relation.journal | JOURNAL OF CATALYSIS | - |
dc.contributor.googleauthor | Shin, Seungho | - |
dc.contributor.googleauthor | Liu, Jiawen | - |
dc.contributor.googleauthor | Akbar, Ali | - |
dc.contributor.googleauthor | Um, Sukkee | - |
dc.relation.code | 2019003413 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DIVISION OF MECHANICAL ENGINEERING | - |
dc.identifier.pid | sukkeeum | - |
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