Journal of Fuel Cell Science and Technology最新文献_第6页

Electrochemical Characterization of Synthesized Ni–Co and Ni–Co–Fe Electrodes for Methanol Fuel Cell 甲醇燃料电池合成Ni-Co和Ni-Co - fe电极的电化学表征

Journal of Fuel Cell Science and Technology Pub Date : 2015-02-01 DOI: 10.1115/1.4029063

S. Paul, Sk. Naimuddin

{"title":"Electrochemical Characterization of Synthesized Ni–Co and Ni–Co–Fe Electrodes for Methanol Fuel Cell","authors":"S. Paul, Sk. Naimuddin","doi":"10.1115/1.4029063","DOIUrl":"https://doi.org/10.1115/1.4029063","url":null,"abstract":"Pt based materials having high electrocatalytic properties are normally used for the electrodes of the fuel cell. But the cost of the material limits the commercialization of alcoholic fuel cell. Non-Pt based metals and alloys as electrode materials for methyl alcohol fuel cells have been investigated with an aim of finding high electrocatalytic surface property for the faster electrode reactions. Electrodes were fabricated by electrodeposition on pure Al foil, from an electrolyte of Ni, Co, and Fe salts. The optimum condition of electrodeposition was found by a series of experiments, varying the chemistry of the electrolyte, pH, temperature, current, and cell potential. Polarization study of the coated Ni–Co or Ni–Co–Fe alloy on pure Al was found to exhibit high exchange current density, indicating an improved electrocatalytic surface with faster charge– discharge reactions at anode and cathode and low overvoltage. Electrochemical impedance studies on the coated and uncoated surface clearly showed that the polarization resistance and impedance were decreased by Ni–Co or N–Co–Fe coating. X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX), and atomic absorption spectroscopy (AAS) studies confirmed the presence of alloying elements and constituents of the alloy. The morphology of the deposits from scanning electron microscope (SEM) images indicated that the electrode surface was a three-dimensional space which increased the effective surface area for the electrode reactions to take place. [DOI: 10.1115/1.4029063]","PeriodicalId":15829,"journal":{"name":"Journal of Fuel Cell Science and Technology","volume":"12 1","pages":"011007"},"PeriodicalIF":0.0,"publicationDate":"2015-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1115/1.4029063","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63487722","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: 11

Ambient Temperature Operation of a Platinum-Free Direct Formate Fuel Cell 无铂直接甲酸燃料电池的环境温度运行

Journal of Fuel Cell Science and Technology Pub Date : 2015-02-01 DOI: 10.1115/1.4029072

Tien Q. Nguyen, Daniel Minami, Chau Hua, Austin M. Miller, Kevin Tran, John L. Haan

引用次数: 23

Safety Analysis of a Solid Oxide Fuel Cell/Gas Turbine Hybrid System Fueled With Gasified Biomass 以气化生物质为燃料的固体氧化物燃料电池/燃气轮机混合系统的安全性分析

Journal of Fuel Cell Science and Technology Pub Date : 2015-02-01 DOI: 10.1115/1.4029084

Xiaojing Lv, Chaohao Lu, Xin-jian Zhu, Y. Weng

{"title":"Safety Analysis of a Solid Oxide Fuel Cell/Gas Turbine Hybrid System Fueled With Gasified Biomass","authors":"Xiaojing Lv, Chaohao Lu, Xin-jian Zhu, Y. Weng","doi":"10.1115/1.4029084","DOIUrl":"https://doi.org/10.1115/1.4029084","url":null,"abstract":"The effect of biomass gas on the safety performance of a solid oxide fuel cell (SOFC)/micro gas turbine (GT) hybrid system was studied with consideration of the fuel cell working temperature, fuel cell temperature gradient requirement, compressor surge zone, and turbine inlet temperature (TIT). The safety performance of the hybrid system on the design condition and off-design condition was also analyzed. Results show that the hybrid system is good adaptability to low concentrations of biomass gas. The electrical efficiency could reach 50% with different biomass gases and is higher than the other combined power systems that used biomass gas. The wood chip gas (WCG) would make the fuel cell or GT easier overheat than the other three gases. The cotton wood gas (CWG) and corn stalk gas (CSG) are easy to cause the TIT too low or the compressor surge. In the safety zone, considering the hybrid system load adjustment range, the effecting order (from large to small, following is same) is WCG, grape seed gas (GSG), CSG, and CWG. Considering the hybrid system electric efficiency, the effecting order is WCG, GSG, CWG, and CSG.","PeriodicalId":15829,"journal":{"name":"Journal of Fuel Cell Science and Technology","volume":"12 1","pages":"011008"},"PeriodicalIF":0.0,"publicationDate":"2015-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1115/1.4029084","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63487888","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: 16

Study on a Vapor-Feed Air-Breathing Direct Methanol Fuel Cell Assisted by a Catalytic Combustor 催化燃烧辅助蒸汽进气式直接甲醇燃料电池的研究

Journal of Fuel Cell Science and Technology Pub Date : 2015-02-01 DOI: 10.1115/1.4029071

W. Yuan, Hongrong Xia, Jinyi Hu, Zhaochun Zhang, Yong Tang

{"title":"Study on a Vapor-Feed Air-Breathing Direct Methanol Fuel Cell Assisted by a Catalytic Combustor","authors":"W. Yuan, Hongrong Xia, Jinyi Hu, Zhaochun Zhang, Yong Tang","doi":"10.1115/1.4029071","DOIUrl":"https://doi.org/10.1115/1.4029071","url":null,"abstract":"Feeding vaporized methanol to the direct methanol fuel cell (DMFC) helps reduce the effects of methanol crossover (MCO) and facilitates the use of high-concentration or neat methanol so as to enhance the energy density of the fuel cell system. This paper reports a novel system design coupling a catalytic combustor with a vapor-feed air-breathing DMFC. The combustor functions as an assistant heat provider to help transform the liquid methanol into vapor phase. The feasibility of this method is experimentally validated. Compared with the traditional electric heating mode, the operation based on this catalytic combustor results in a higher cell performance. Results indicate that the values of methanol concentration and methanol vapor chamber (MVC) temperature both have direct effects on the cell performance, which should be well optimized. As for the operation of the catalytic combustor, it is necessary to optimize the number of capillary wicks and also catalyst loading. In order to fast trigger the combustion reaction, an optimal oxygen feed rate (OFR) must be used. The required amount of oxygen to sustain the reaction can be far lower than that for methanol ignition in the starting stage.","PeriodicalId":15829,"journal":{"name":"Journal of Fuel Cell Science and Technology","volume":"6 1","pages":"011002"},"PeriodicalIF":0.0,"publicationDate":"2015-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1115/1.4029071","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63487785","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: 4

Analysis and Optimization of Transient Response of Polymer Electrolyte Fuel Cells 聚合物电解质燃料电池瞬态响应分析与优化

Journal of Fuel Cell Science and Technology Pub Date : 2015-02-01 DOI: 10.1115/1.4028972

A. Verma, R. Pitchumani

引用次数: 9

Fabrication and Performance of La0.6Sr0.4Co0.2Fe0.8O3−δ Infiltrated-Yttria-Stabilized Zirconia Cathode on Anode-Supported Solid Oxide Fuel Cell 阳极负载固体氧化物燃料电池La0.6Sr0.4Co0.2Fe0.8O3−δ浸润钇稳定氧化锆阴极的制备与性能

Journal of Fuel Cell Science and Technology Pub Date : 2015-02-01 DOI: 10.1115/1.4028947

D. Tang, Minfang Han, Ziwei Zheng

引用次数: 5

Evaluation of Cathode Air Flow Transients in a SOFC/GT Hybrid System Using Hardware in the Loop Simulation. SOFC/GT混合动力系统阴极气流瞬态的硬件在环仿真

Journal of Fuel Cell Science and Technology Pub Date : 2015-02-01 DOI: 10.1115/1.4028950

Nana Zhou, Chen Yang, David Tucker

引用次数: 7

Hydrodynamic and Heat Transfer Effects of Varying Sparger Spacing Within a Column Photobioreactor Using Computational Fluid Dynamics 基于计算流体动力学的柱状光生物反应器内不同分散器间距的流体力学和传热效应

Journal of Fuel Cell Science and Technology Pub Date : 2015-02-01 DOI: 10.1115/1.4028951

G. Bari, T. Suess, G. Anderson, S. Gent

引用次数: 2

Performance Modeling of a Direct Methanol Fuel Cell Fueled With Methanol and Ethanol 以甲醇和乙醇为燃料的直接甲醇燃料电池性能建模

Journal of Fuel Cell Science and Technology Pub Date : 2014-12-01 DOI: 10.1115/1.4028971

S. Shrestha, Sujith Mohan

引用次数: 3

Investigation Into Mechanical Behavior of the Current Collector for the Molten Carbonate Fuel Cell Through Finite Element Analysis Using Hexahedral Mesh Coarsening 熔融碳酸盐燃料电池集流器力学行为的六面体网格粗化有限元分析

Journal of Fuel Cell Science and Technology Pub Date : 2014-12-01 DOI: 10.1115/1.4028939

Chang-Whan Lee, Dong-Yol Yang, Jong-Seung Park, Y. Kim, T. Lee

引用次数: 1