| 甲醇浓度对被动式自呼吸直接甲醇燃料电池性能的影响 |
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| 引用本文： | 张晶,冯立纲,蔡卫卫,刘长鹏,邢巍.甲醇浓度对被动式自呼吸直接甲醇燃料电池性能的影响[J].中国科学:化学,2011(12):1864-1870. |
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| 作者姓名： | 张晶 冯立纲 蔡卫卫 刘长鹏 邢巍 |
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| 作者单位： | 电分析化学国家重点实验室；吉林省先进化学电源实验室,中国科学院研究生院,中国科学院长春应用化学研究所,长春130022 |
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| 基金项目： | 国家高技术研究发展计划（863计划 2007AA05Z159 2007AA05Z143）; 国家自然科学基金（20703043 20876153和20933004）; 吉林省科技研究计划（20102204）的资助致谢本工作得到国家高技术研究发展计划（863计划,2007AA052159,2007AA052143）,国家自然科学基金（20703043,20876153和20933004）及吉林省科技研究计划（20102204）的资助,特此致谢. |
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| 摘 要： | 依据单电池测试结果和甲醇传质理论考察了甲醇溶液的浓度对被动式自呼吸直接甲醇燃料电池（DMFC）性能的影响.研究结果表明,电池的法拉第效率和能量转化效率会随着浓度的增大而降低,采用4mol/L的甲醇溶液实现了最大的放电功率13.9mW/cm^2,并能在60mA下稳定放电长达20h.这取决于电池运行过程中电极内部的甲醇传质和甲醇透过的共同作用.
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| 关 键 词： | 甲醇浓度 甲醇透过 被动式自呼吸电池 |
Effect of methanol concentration on the operation performances for passive air-breathing direct methanol fuel cell |
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| ZHANG Jing,FENG LiGang,CAI WeiWei,LIU ChangPeng ＆ XING Wei.Effect of methanol concentration on the operation performances for passive air-breathing direct methanol fuel cell[J].Scientia Sinica Chimica,2011(12):1864-1870. |
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| Authors: | ZHANG Jing FENG LiGang CAI WeiWei LIU ChangPeng ＆ XING Wei |
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| Institution: | State Key Laboratory of Electro-analytical Chemistry;Laboratory of Advanced Power Sources,Changchun Institute of Applied Chemistry,Graduate University of Chinese Academy of Sciences,Changchun 130022,China |
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| Abstract: | The effect of methanol concentration on the performances for passive air-breathing direct methanol fuel cell（DMFC） was studied by single cell tests and methanol transfer theory.With the increase of methanol concentration,the Faradic efficiency and energy efficiency were decreased due to the methanol crossover effect.The maximum power density of 13.9 mW/cm^2 and a 20-hour stable performance at a discharge current of 60 mA were obtained under the methanol concentration of 4 mol/L.The above results could be attributed to the synergy of methanol transport and methanol crossover. |
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| Keywords: | methanol concentration methanol crossover passive air-breathing direct methanol fuel cell |
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