| 直接甲醇燃料电池的阳极进料系统及控制策略 |
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| 引用本文： | 齐亮,谢晓峰,李胜强,徐景明,周其凤.直接甲醇燃料电池的阳极进料系统及控制策略[J].清华大学学报(自然科学版),2007,47(3):436-440. |
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| 作者姓名： | 齐亮 谢晓峰 李胜强 徐景明 周其凤 |
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| 作者单位： | 1. 清华大学,核能与新能源技术研究院,北京,100084
2. 北京大学化学与分子工程学院,北京,100871 |
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| 基金项目： | 国家高技术研究计划发展专项经费 |
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| 摘 要： | 直接甲醇燃料电池(direct methanol fuel cells,DMFC)的甲醇燃料的利用关系到系统的能量密度,是其微型化亟待解决的问题。为了提高甲醇利用率和提高系统的能量密度,必须采用必要的进料系统和控制策略。该文从主动和被动两类系统总结了面向直接甲醇燃料电池的关键系统组件和相关的控制策略,从系统工程的角度加以分析,总结了DMFC用甲醇传感器和系统控制的设计开发思想,并指出电池型化学传感器将是DMFC用甲醇传感器的主要开发方向,系统需采用脉冲式进料和混合动力方式以适应不同模式的负载。自呼吸电堆需采用基于化学势为推动力的被动式进料方式。采用空载自升温模式有助于缩短启动时间。
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| 关 键 词： | 直接甲醇燃料电池 系统 甲醇传感器 系统平衡 |
| 文章编号： | 1000-0054(2007)03-0436-05 |
| 修稿时间： | 2006年4月24日 |
Fuel-delivery system and control of portable direct methanol fuel cell |
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| QI Liang,XIE Xiaofeng,LI Shengqiang,XU Jingming,ZHOU Qifeng.Fuel-delivery system and control of portable direct methanol fuel cell[J].Journal of Tsinghua University(Science and Technology),2007,47(3):436-440. |
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| Authors: | QI Liang XIE Xiaofeng LI Shengqiang XU Jingming ZHOU Qifeng |
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| Abstract: | The fuel efficiency, an urgent issue, in fuel cell commercializatory is related to the energy density in direct methanol fuel cells (DMFC). Improved fuel delivering systems are needed to improve fuel utilization and the system energy density. The key system component and strategies oriented to DMFC were summarized in detail. The methanol sensor and system control devices were analyzed to improve system efficiency. Fuel cell-based electrochemical sensors show promise with pulse-feed methods and hybrid/battery modes used to accommodate different load modes. The passive fuel supply mode, in which the driving force is based on the chemical potential, is suitable for self-breathing fuel cell stacks, and will reduce the start-up time by means of the self-heating/ no-load method. |
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| Keywords: | direct methanol fuel cell (DMFC) system methanol sensor balance of plant (BOP) |
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