Improvement of the Performance of Direct-Generation Type Polymer Electrolyte Fuel Cells and Their Systemization

直发电型聚合物电解质燃料电池的性能改进及其系统化

• 批准号: 15560188
• 负责人: WAKISAKA Tomoyuki
• 金额: $ 2.05万
• 依托单位: Osaka City University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15560188/
• 关键词: Polymer Electrolyte Fuel Cell; Direct-Generation Type; Ethanol; Electro-Chemical Reaction; Computational Fluid Dynamics; Hybrid System; Time-Splitting Method; Power Control; マイクロチャンネル

In this research project, the direct-generation type PEFC (Polymer Electrolyte Fuel Cell) without a reformer was taken as an object of investigation among various types of PEFCs, and it was attempted to use ethanol as innocuous liquid fuel. In this case, the power generation of the PEFC was low, and therefore measures to improve the performance were examined. The power generation performance of a self-made PEEC with MEAs (Membrane Electrode Assemblies) prepared by means of the Cast Method (original making method of MEA) was measured by supplying the ethanol aqueous solution directly. As a result, an increase of about two times in output power was attained in comparison with MEAs prepared by other conventional making methods. When porous metal foam plates made of nickel were used as diffusion layers, the PEFC output power became 1.8 times larger even in the case of passive-type PEFC without any auxiliary equipment. Reaction products in the anode-side flow passage of the PEFC were analyz … More ed. C0_2 was detected but CO was not detected by gas chromatograph. Acetic acid and acetaldehyde as by-products were detected by liquid chromatograph. These results mean that ethanol is oxidized to acetic acid and acetaldehyde, and partly to C0_2. For investigating the behavior of those by-products, a three-dimensional numerical analysis model for the PEFC was composed on the basis of the original GTT method, and the flow in the PEFC was numerically analyzed. Furthermore, the flow visualization and the flow analysis by the PIV (Particle Image Velocimetry) method were carried out. As a result, it has been found that a serpentine flow passage is effective in discharging such by-products.As a hydrogen-fuelled small-size and light-weight PEFC, an original passive-type small cylindrical PEFC (named "Power Tube") which can generate a specific power of 13OmW/g has been contrived. In the case of hydrogen-fuelled PEFCs, output energy density is high but output power density is low for the power source of an electric vehicle. Therefore, it is necessary to apply a hybrid system composed of PEFCs and electricity storage devices. In this research project, a hybrid system composed of passive-type PEFCs and electric double layer capacitors was constructed for a light-weight electric vehicle. For controlling this hybrid system, an original Time-Splitting Method (TSM) which can control the power supply ratio to the motor according to running states has been contrived. As power supply modes to the motor, series and parallel modes were tested, and it has been shown that TSM can easily control the motor power in both modes. Less

在该研究项目中，无需改革仪的直接生成PEFC（聚合物电解质燃料电池）被视为各种PEFC之间投资的对象，并试图将乙醇用作无害的液体燃料。在这种情况下，PEFC的发电量很低，因此检查了改善性能的措施。通过铸造方法（MEA的原始制作方法）制备的MEAS（膜电极组件）的自制PEEC的发电性能是通过直接提供乙醇水溶液来测量的。结果，与其他常规制作方法制备的测量相比，达到了大约两倍的输出功率。当用镍制成的多孔金属泡沫板用作扩散层时，即使在没有任何辅助设备的无源型PEFC的情况下，PEFC输出功率也会更大1.8倍。分析了PEFC的阳极侧流通过中的反应产物……更多。检测到C0_2，但没有通过气相色谱检测到CO。通过液相色谱检测乙酸和乙醛作为副产品。这些结果意味着将乙醇氧化为乙酸和乙醛，部分是C0_2。为了研究这些副产品的行为，根据原始GTT方法组成了PEFC的三维数值分析模型，并且对PEFC中的流量进行了数值分析。此外，进行了PIV（粒子图像速度法）方法的流动可视化和流量分析。结果，已经发现蛇形流量通道可有效排放此类副产品。作为氢燃料的小型和轻质PEFC，这是一种原始的被动型小圆柱形PEFC（命名为“ Power Tube”），可以产生13omw/g的特定功率。在氢燃料的PEFC的情况下，输出能量密度很高，但对于电动汽车的电源，输出功率密度较低。因此，有必要应用由PEFC和电动存储设备组成的混合系统。在该研究项目中，为轻型电动汽车构建了由被动型PEFC和电动双层电容器组成的混合系统。为了控制此混合系统，已经贡献了一种可以根据运行状态控制电源比的原始时间分类方法（TSM）。作为电动机的电源模式，测试了系列和并行模式，并且已经证明TSM可以轻松地控制两种模式的电机功率。较少的

项目成果

Investigation on the Effects of the Making Process and Structure of a Membrane Electrode Assembly on the Performance of Polymer Electrolyte Fuel Cells

膜电极组件的制作工艺和结构对聚合物电解质燃料电池性能的影响研究

• 发表时间: 2005
• 期刊: Proceedings of the Sixth KSME-JSME Thermal and Fluids Engineering Conference JJ08(CD-ROM)
• 作者: Tomoyuki Wakisaka;George Koike;Kojiro Nishioka;Yogo Takada
• 通讯作者: Yogo Takada

エタノール直接発電型固体高分子燃料電池のアノード側流路内の流動解析

乙醇直接发电固体聚合物燃料电池阳极侧流路流动分析

• 发表时间: 2005
• 期刊: 日本機械学会関西支部第80期定時総会講演会講演論文集 No.054-1
• 作者: 谷中悟史;石井利長;高田洋吾;脇坂知行
• 通讯作者: 脇坂知行

Application of a Hybrid System with Passive-type Polymer Electrolyte Fuel Cells and Capacitors to a Lightweight Electric Vehicle (Power Control by Time-Splitting Method)

无源型聚合物电解质燃料电池和电容器混合系统在轻型电动汽车中的应用（分时法功率控制）

• 发表时间: 2005
• 期刊: Transactions of JSME, Ser.B Vol.71,No.702
• 作者: Hiroyuki Imanishi;Takuji Nakamura;Yogo Takada;tomoyuki Wakisaka
• 通讯作者: tomoyuki Wakisaka

固体高分子型燃料電池における物質移動・電気化学反応解析のためのモデリング

聚合物电解质燃料电池中的传质和电化学反应分析建模

• 发表时间: 2004
• 期刊: 日本機械学会関西支部第79期定時総会講演会講演論文集 No.044-1
• 作者: 小池穣二;谷中悟史;高田洋吾;脇坂知行
• 通讯作者: 脇坂知行

高田洋吾, 古市紀之, 八賀正司, 瀧山武, 脇坂知行: "マイクロチャンネル内流れの数値解析とラインLDVによる計測"日本機械学会関西支部第79期定時総会講演会講演論文集. No.044-1. 2-53-2-54 (2004)

Yogo Takada、Noriyuki Furuichi、Masashi Yaga、Takeshi Takiyama、Tomoyuki Wakisaka：“微通道中流动的数值分析和使用线 LDV 的测量”日本机械工程师学会关西分会第 79 届年会论文集第 044 号。 -1。2-53-2-54（2004）