Development of a high-performance fuel cell with a novel electrode structure

开发具有新颖电极结构的高性能燃料电池

• 批准号: 19360357
• 负责人: NAKAGAWA Nobuyoshi
• 金额: $ 12.06万
• 依托单位: Gunma University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19360357/
• 关键词: 電極構造体; 直接メタノール型燃料電池; メタノールクロスオーバー; 多孔質体; 質量分析; 物質移動

Gas components and their pressures in the anode gas layer formed in the noble electrode structure of a DMFC was analyzed by using in-situ mass spectroscopy with a capillary probe. Reaction products at the electrode and their production rates as well as their mass transfer rates crossing the membrane were investigated based on the measurements. It was revealed that the vapor pressure of methanol in the gas layer corresponds to the methanol concentration used in a liquid feed DMFC from the equilibrium calculation. Production rate of methyl-formate, as a main component of the intermediate-product, was proportional to the second power to the ratio of methanol vapor pressure/water vapor pressure in the gas layer. However, the formation of the intermediate products could be neglected in the energy conversion efficiency because of the too small production rates comparing with that of CO_2. The power out put was increased by increasing the water flux from the cathode by putting a hydrophobic porous membrane out side the cathode by keeping an optimum distance from the cathode surface.

采用毛细管探针原位质谱法分析了DMFC贵电极结构阳极气体层中的气体成分及其压力。根据测量结果，研究了电极上的反应产物及其生成速率和跨膜传质速率。结果表明，在气体层中的甲醇的蒸气压对应于在液体进料DMFC中使用的甲醇浓度从平衡计算。甲酸甲酯作为中间产物的主要成分，其产率与气层中甲醇蒸气压/水蒸气压之比的二次方成正比。但由于中间产物的生成速率相对于CO_2的生成速率来说太小，因此在能量转换效率中可以忽略中间产物的生成。通过将疏水多孔膜放置在阴极外侧并保持与阴极表面的最佳距离来增加来自阴极的水通量，从而增加功率输出。

项目成果

カーボン多孔質板を用いた小型メタノール燃料電池の開発

使用碳多孔板开发小型甲醇燃料电池

• 发表时间: 2009
• 作者: N. Nakagawa;K. Sekimoto;M. Shahbudin Masdar and R. Noda;中川紳好
• 通讯作者: 中川紳好

「DMFCにおける支持体の多孔質構造と電池特性の関係」, 多孔質体の精密制御と機能・物性評価

“DMFC中支撑体的多孔结构与电池特性的关系”，多孔材料的精确控制以及功能和物理性能的评估

• 发表时间: 2008
• 作者: 中川紳好;分担執筆
• 通讯作者: 分担執筆

In-situ Mass Spectrometry in the Anode of a Passive Direct Methanol Fuel Cell(DMFC)

被动式直接甲醇燃料电池 (DMFC) 阳极的原位质谱分析

• 发表时间: 2009
• 作者: M.Shahbudin Masdar;中川紳好
• 通讯作者: 中川紳好

Electrochemical Mass Spectrometry (EMS) Study on Anode Gas Layer inside DMFC

DMFC 内部阳极气体层的电化学质谱 (EMS) 研究

• 发表时间: 2008
• 作者: M. Shahbudin Mastar;R. Noda;N. Nakagawa
• 通讯作者: N. Nakagawa

Mass spectroscopy for the anode gas layer in a semi-passive DMFC using porous carbon plate Part I: Relationship between the gas composition and the current density

• DOI: 10.1016/j.jpowsour.2009.07.027
• 发表时间: 2009-12
• 期刊: Journal of Power Sources
• 影响因子: 9.2
• 作者: M. S. Masdar;T. Tsujiguchi;N. Nakagawa