A multiphysic dynamic 1-D model of a proton-exchange-membrane fuel-cell stack for real-time simulation / Fei Gao in IEEE transactions on industrial electronics, Vol. 57 N° 6 (Juin 2010)  

Public ISBD [article]  inIEEE transactions on industrial electronics > Vol. 57 N° 6 (Juin 2010) . - pp. 1853 - 1864 Titre : A multiphysic dynamic 1-D model of a proton-exchange-membrane fuel-cell stack for real-time simulation Type de document : texte imprimé Auteurs : Fei Gao, Auteur ; Blunier, Benjamin, Auteur ; Miraoui, Aabdellatif, Auteur Article en page(s) : pp. 1853 - 1864 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Design methodology Energy conversion Fuell cells Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents cell-layer-scale multidomain dynamic 1-D proton-exchange-membrane fuel-cell (PEMFC) stack model using VHDL-AMS modeling language. The model covers three main fuel-cell energy domains: electrical, fluidic, and thermal. The performance and advantages of the VHDL-AMS language are shown in the first part. Then, by means of the ¿top-down¿ modeling approach, the electrical-, fluidic-, and thermal-domain models of the PEMFC stack are addressed in three separate parts. Simulation results are then compared with a Ballard 1.2-kW NEXA fuel-cell system and show a great agreement with experimental data. This complex multidomain VHDL-AMS stack model, containing more than 25 000 state variables and only few empirical coefficients (four parameters identified on the polarization curve), can be used for fuel-cell system components design and also for real-time applications. Real-time simulation is a key issue in many applications such as system control and hardware-in-the-loop applications. Moreover, this fuel-cell stack model is suitable and can be parameterized for all kinds of PEMFC including water-cooled and metal bipolar plates stacks: Only the cooling fluid and materials properties have to be changed. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4895331 [article] A multiphysic dynamic 1-D model of a proton-exchange-membrane fuel-cell stack for real-time simulation [texte imprimé] / Fei Gao, Auteur ; Blunier, Benjamin, Auteur ; Miraoui, Aabdellatif, Auteur . - pp. 1853 - 1864. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 6 (Juin 2010) . - pp. 1853 - 1864 Mots-clés : Design methodology Energy conversion Fuell cells Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents cell-layer-scale multidomain dynamic 1-D proton-exchange-membrane fuel-cell (PEMFC) stack model using VHDL-AMS modeling language. The model covers three main fuel-cell energy domains: electrical, fluidic, and thermal. The performance and advantages of the VHDL-AMS language are shown in the first part. Then, by means of the ¿top-down¿ modeling approach, the electrical-, fluidic-, and thermal-domain models of the PEMFC stack are addressed in three separate parts. Simulation results are then compared with a Ballard 1.2-kW NEXA fuel-cell system and show a great agreement with experimental data. This complex multidomain VHDL-AMS stack model, containing more than 25 000 state variables and only few empirical coefficients (four parameters identified on the polarization curve), can be used for fuel-cell system components design and also for real-time applications. Real-time simulation is a key issue in many applications such as system control and hardware-in-the-loop applications. Moreover, this fuel-cell stack model is suitable and can be parameterized for all kinds of PEMFC including water-cooled and metal bipolar plates stacks: Only the cooling fluid and materials properties have to be changed. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4895331

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Synthesis of fluorescent CdS quantum dots of tunable light emission with a new in situ produced capping agent / Yan-mei Mo in Industrial & engineering chemistry research, Vol. 51 N° 17 (Mai 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 17 (Mai 2012) . - pp. 5995–6000 Titre : Synthesis of fluorescent CdS quantum dots of tunable light emission with a new in situ produced capping agent Type de document : texte imprimé Auteurs : Yan-mei Mo, Auteur ; Yu Tang, Auteur ; Fei Gao, Auteur Année de publication : 2012 Article en page(s) : pp. 5995–6000 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Carboxylic acid Résumé : Herein, we report an ambient synthesis of CdS QDs with widely tunable particle size by sulfur source of H2S and a new capping agent R-2-thiotetrahydrothiazole-4-carboxylic acid in situ produced from the reaction of l-cysteine with carbon disulfide in water. XRD, FTIR, UV–vis, PL, and TEM measurements were used to characterize the synthesized CdS QDs. Small particle size in a range of 1–3 nm and five PL colors from dark, deep blue to yellow of CdS QDs were achieved by changing the molar ratio and pH value of preparation. These CdS colloid solutions exhibit high stability even under weak acidity conditions at pH 6.5. The CdS QDs display highest emission intensity at a concentration of 2 mM. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201826e [article] Synthesis of fluorescent CdS quantum dots of tunable light emission with a new in situ produced capping agent [texte imprimé] / Yan-mei Mo, Auteur ; Yu Tang, Auteur ; Fei Gao, Auteur . - 2012 . - pp. 5995–6000. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 17 (Mai 2012) . - pp. 5995–6000 Mots-clés : Carboxylic acid Résumé : Herein, we report an ambient synthesis of CdS QDs with widely tunable particle size by sulfur source of H2S and a new capping agent R-2-thiotetrahydrothiazole-4-carboxylic acid in situ produced from the reaction of l-cysteine with carbon disulfide in water. XRD, FTIR, UV–vis, PL, and TEM measurements were used to characterize the synthesized CdS QDs. Small particle size in a range of 1–3 nm and five PL colors from dark, deep blue to yellow of CdS QDs were achieved by changing the molar ratio and pH value of preparation. These CdS colloid solutions exhibit high stability even under weak acidity conditions at pH 6.5. The CdS QDs display highest emission intensity at a concentration of 2 mM. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201826e

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