2016 XVI International Congress of the Mexican Hydrogen Society (CSMH)最新文献

Study of the dynamics of a four-module fuel cell stack to be integrated in a hybrid electric power plant of a utility vehicle 多功能车混合动力装置集成四模块燃料电池堆动力学研究

2016 XVI International Congress of the Mexican Hydrogen Society (CSMH) Pub Date : 2016-09-01 DOI: 10.1109/CSMH.2016.7947657

T. Romero, J. R. Flores, I. L. Albarrán, F. Loyola, Ulises Cano

{"title":"Study of the dynamics of a four-module fuel cell stack to be integrated in a hybrid electric power plant of a utility vehicle","authors":"T. Romero, J. R. Flores, I. L. Albarrán, F. Loyola, Ulises Cano","doi":"10.1109/CSMH.2016.7947657","DOIUrl":"https://doi.org/10.1109/CSMH.2016.7947657","url":null,"abstract":"A four-module PEM fuel cell stack was electrochemically characterized prior to its incorporation to a hybrid power plant of an electrical utility vehicle. The 3 kW fuel cell stack, comprised of 4 units of 100 membrane electrode assemblies (MEAs) in an open-cathode and air-cooled configuration, was characterized in order to identify its optimum operational parameters. The open cathode configuration is a common approach to reduce parasitic loads and increase energy efficiency in fuel cells; however, the forced convection derives frequently to internal dehydration. Voltage reversal caused by lack of reactants, many times due to dehydration at the reaction sites (membrane-electrode interface) is a common failure source for this kind of configuration especially at high current demands. Therefore, water management becomes crucial for preventing fuel cell's performance decrease and permanent failure. Subsequently, a smart water management strategy had to be established prior to the power plant integration into the vehicle for the fuel cell's performance to be guaranteed during the vehicle duty cycle. For this purpose, a testing protocol was established for testing each module based on linear voltammetries, electrochemical impedance spectroscopy and thermal images in order to observe cell's voltage and resistance as indicators of internal hydration, reactants concentration, and heat distribution during the stack operation. Polarization curves were obtained for each module and from them, the point (voltage, current, temperature and air vent) for steady operation was identified as the recommended condition for nominal performance during the fuel cell operation in the hybrid power plant of the electrical vehicle.","PeriodicalId":340003,"journal":{"name":"2016 XVI International Congress of the Mexican Hydrogen Society (CSMH)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131232416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of the scaling-up the reactions synthesis of the poly(styrene-co-acrylic acid) polyelectrolyte at laboratory level 放大反应对实验室合成聚苯乙烯-共丙烯酸聚电解质的影响

2016 XVI International Congress of the Mexican Hydrogen Society (CSMH) Pub Date : 2016-09-01 DOI: 10.1109/CSMH.2016.7947660

L. Melo, R. Benavides, G. Martínez, D. Morales-Acosta, L. Da Silva, M. Paula

引用次数: 0

Optimization operation of a parabolic trough collector using artificial neural network 利用人工神经网络优化抛物线槽集热器的运行

2016 XVI International Congress of the Mexican Hydrogen Society (CSMH) Pub Date : 2016-09-01 DOI: 10.1109/CSMH.2016.7947661

O. M. Tzuc, A. Bassam, M. A. E. Soberanis, M. V. Caamal

引用次数: 0

Preparation and properties of polypropylene-carbon nanotubes nanocomposites for application in bipolar plates 双极板用聚丙烯-碳纳米管复合材料的制备及性能研究

2016 XVI International Congress of the Mexican Hydrogen Society (CSMH) Pub Date : 2016-09-01 DOI: 10.1109/CSMH.2016.7947656

C. A. Ramírez-Herrera, J. G. Cabañas-Moreno, O. Solorza-Feria, J. Pérez-González, A. Flores-Vela, N. Romero-Partida

{"title":"Preparation and properties of polypropylene-carbon nanotubes nanocomposites for application in bipolar plates","authors":"C. A. Ramírez-Herrera, J. G. Cabañas-Moreno, O. Solorza-Feria, J. Pérez-González, A. Flores-Vela, N. Romero-Partida","doi":"10.1109/CSMH.2016.7947656","DOIUrl":"https://doi.org/10.1109/CSMH.2016.7947656","url":null,"abstract":"Polymer electrolyte membrane fuel cells (PEMFCs) have the potential to play a major role as energy sources for transportation and portable applications because they feature high power density at relatively low operating temperatures. Bipolar plates are a key component of PEMFCs in terms of cost and weight. To date, many different materials for bipolar plates have been investigated and an alternative solution consists in carbon nanotubes (CNTs)-filled polymer nanocomposites which combine the good processability, high corrosion resistance and good mechanical properties of polymers with the excellent electrical and other functional properties of the CNTs. However, a preferential distribution of well dispersed CNTs forming conductive 3D networks is required to successfully exploit their potential. In this work, polypropylene (PP)-multi-walled CNTs (MWCNTs) nanocomposites have been prepared by melt-blending using different loadings (1, 2 and 5 wt.%) of MWCNTs and processing conditions. The microstructure and properties of these nanocomposites have been characterized on molded plates of 1.5 mm thickness. The state of dispersion of the MWCNTs in the polymer matrix is investigated by SEM and optical confocal microscopy and the electrical properties of the nanocomposites are measured in order to find the electrical percolation threshold.","PeriodicalId":340003,"journal":{"name":"2016 XVI International Congress of the Mexican Hydrogen Society (CSMH)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116814918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Biohydrogen production by anaerobic digestion of corn cob and stem of faba bean hydrolysates 玉米芯和蚕豆茎水解物厌氧消化制氢

2016 XVI International Congress of the Mexican Hydrogen Society (CSMH) Pub Date : 2016-09-01 DOI: 10.1109/CSMH.2016.7947659

D. Alcántara-Díaz, S. Fernández-Valverde, J. Gómora-Hernández, M. C. Hernández-Berriel

{"title":"Biohydrogen production by anaerobic digestion of corn cob and stem of faba bean hydrolysates","authors":"D. Alcántara-Díaz, S. Fernández-Valverde, J. Gómora-Hernández, M. C. Hernández-Berriel","doi":"10.1109/CSMH.2016.7947659","DOIUrl":"https://doi.org/10.1109/CSMH.2016.7947659","url":null,"abstract":"Biomass waste for hydrogen production is an important goal for the Hydrogen Economy. In this paper is reported the research of corn cob and stem of faba bean agricultural waste by hydrolysis for sugar production. Acid hydrolysis was performed in 1 g of dried raw material per 15 mL of different H3PO4 acid solutions heated at 100°C and 130°C during 2 h. The sugar yield was determined by dinitro salicylic acid technique. The maximum sugar recovery calculated in g of sugar per g of raw material were 0.43 and 0.17 for corncob and faba bean stalk respectively. For fermentation, hydrolysates were mixed in sealed vials with culture medium in anoxic atmosphere, an inoculum of 0.05 mL of Clostridium butyricum and 0.05 mL of Enterobacter cloacae was used, the vials were incubated at 37°C, two samples were taken every 2 h. The cell growing was monitored using a Petroff-Hausser counting chamber, hydrogen production was determined by gas chromatography and pH was also determined for each sample. In both substrates the cell growing lag time was 4 hours and after 11 hours hydrogen production was detected. The saccharide-biohydrogen production yields for sugars obtained from the hydrolysates were calculated according to the 2.75 mol H2 per mol glucose reported experimentally in mexican fruits and vegetable waste. They were 18.9% and 12% for corncob and faba bean stem respectively.","PeriodicalId":340003,"journal":{"name":"2016 XVI International Congress of the Mexican Hydrogen Society (CSMH)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128259614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Electroless nickel plating process in electrodes for use in oxi-hydrogen reactors 氧氢反应器用电极化学镀镍工艺

2016 XVI International Congress of the Mexican Hydrogen Society (CSMH) Pub Date : 2016-09-01 DOI: 10.1109/CSMH.2016.7947662

L. Contreras-López, E. Hernández-Hernández, C. Cortés-Escobedo, J. S. Ana-Téllez, W. Martínez-Velazco

{"title":"Electroless nickel plating process in electrodes for use in oxi-hydrogen reactors","authors":"L. Contreras-López, E. Hernández-Hernández, C. Cortés-Escobedo, J. S. Ana-Téllez, W. Martínez-Velazco","doi":"10.1109/CSMH.2016.7947662","DOIUrl":"https://doi.org/10.1109/CSMH.2016.7947662","url":null,"abstract":"It was found that when a mixture of hydrogen and oxygen in the fuel gas stream is injected, either gasoline or diesel, it increases its combustion efficiency decreasing at the same time the pollutant emissions of fuels without burning into the atmosphere and saving from 10 up to 30% on fuel. In order to obtain this gaseous mixture, reactors oxyhydrogen operating in conditions in which the engine operates has been developed. A part important of these reactors are the electrodes that should count with characteristics as high resistance to the corrosion, high electronic conductivity and high surface area. This work presents the construction of electrodes for oxyhydrogen reactors with different characteristics, allowing to increase life time while maintaining the efficiency of the reactors. For this electroless nickel plating method was select to deposit a thick coating on aluminum and brass substrates at different bath times. Structural and morphological characterization is presented and discussed. The results obtained by X-ray diffraction and optical microscopy, showed that both materials to favor the deposition of nickel. It can be concluded that the time of deposition of 4, 6 and 8 hours not significantly influences the amount of nickel deposited on the material in reference with X-ray analysis.","PeriodicalId":340003,"journal":{"name":"2016 XVI International Congress of the Mexican Hydrogen Society (CSMH)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121774436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Computational analysis of the machining and design parameters in the flow conditions of the electrodes in the PEM Cells PEM电池中电极流动条件下的加工和设计参数的计算分析

2016 XVI International Congress of the Mexican Hydrogen Society (CSMH) Pub Date : 2016-09-01 DOI: 10.1109/CSMH.2016.7947658

David Delgado, H. Okuno

引用次数: 0