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。
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.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第3期436-440,共5页
Journal of Tsinghua University(Science and Technology)
基金
国家"八六三"高技术项目(2003AA517070)
关键词
直接甲醇燃料电池
系统
甲醇传感器
系统平衡
direct methanol fuel cell （DMFC）
system
methanol sensor
balance of plant （BOP）
