Development of alkaline direct methanol fuel cells based on crosslinked PVA polymer membranes
Development of alkaline direct methanol fuel cells based on crosslinked PVA polymer membranes
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DOI：
10.1016/j.jpowsour.2006.06.065
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发表时间：
2006-11
影响因子：
9.2
通讯作者：
Chun–Chen Yang;S. Chiu;W. Chien
中科院分区：
文献类型：
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作者：
Chun–Chen Yang;S. Chiu;W. Chien
通过溶液流延技术获得了新型交联 PVA/SSA（10wt.% 磺基琥珀酸）固体聚合物膜。碱性直接甲醇燃料电池（DMFC）由含有MnO2/BP2000+CNT二元碳油墨混合物的空气阴极、含有PtRu黑色油墨（0.25至4.50mgcm−2）的钛基阳极电极和碱性交联PVA/SSA固体聚合物膜组成。通过线性极化法、循环伏安法（CV）分析、恒电位法和交流阻抗谱研究了阳极和阴极的电化学特性。阳极电极上采用厚度为0.1mm的Ti-mesh（Delker）作为集流体，无扩散层，大大降低了电极反应的传质阻力。结果表明，使用这种新型交联 PVA/SSA 固体聚合物膜的碱性 DMFC 在环境温度和压力下表现出优异的电化学性能。在 60°C 和 1atm 的 2M KOH+2M CH3OH 溶液中，DMFC 的最大峰值电流密度约为 4.13mWcm−2。
A novel crosslinked PVA/SSA (10wt.% sulfosuccinic acid) solid polymer membrane was obtained by a solution casting technique. An alkaline direct methanol fuel cell (DMFC) is composed of an air cathode with a mixture of MnO2/BP2000+CNT binary carbon inks, a Ti-based anode electrode with PtRu black inks (varied from 0.25 to 4.50mgcm−2) and an alkaline crosslinked PVA/SSA solid polymer membrane. The electrochemical characteristics of the anode and cathode electrodes were investigated by the linear polarization method, cyclic voltammetry (CV) analysis, potentiostatic method and AC impedance spectroscopy. A Ti-mesh (Delker) with a thickness of 0.1mm was used as a current collector on the anode electrode without a diffusion layer, which greatly reduced the mass transfer resistance for the electrode reaction. It was demonstrated that the alkaline DMFC using this novel crosslinked PVA/SSA solid polymer membrane showed excellent electrochemical performance at ambient temperature and pressure. The maximum peak current density of the DMFC was about 4.13mWcm−2at 60°C and 1atm in 2M KOH+2M CH3OH solution.