摘要
首次设计并制作了一种微型平面6-cell组合的质子交换膜再生式燃料电池(PEM-URFC)电源系统.该微型电源由一片含多个膜电极单元的质子交换膜做为电解和发电的双功能膜电极组件,一个装有储氢材料和电解用水的底盒做为氢气储放和给水装置,通过带有气流孔的底板、碳极板及顶板紧密压合而成.在电解模式时,该电源系统将水分解产生氢并通过储氢合金存储于底盒中;而在燃料电池模式时,氢再被释放出来与空气中的氧进行放电反应而产生电流.常温常压下,该微型电源的开路电压可达4.9 V,在3.0 V的工作电压下,能维持19 mA/cm2放电约40分钟左右.该电源系统具有良好的充放电循环能力,在10次充放电循环后,电池性能依然能保持稳定.
A novel micro planar fuel cell power supplier,in which a six-cell PEM united regenerative fuel cell（URFC） stack is used as the power generator,was designed and fabricated.Each cell was made by sandwiching a membrane electrode assembly（MEA） between two graphite monopolar plates,and six cell units were mechanically fixed in two organic glass endplates.When the stack was operated in electrolysis mode,hydrogen was generated from the splitting of water and stored in hydrogen storage alloy;when it was operated in fuel cell mode,hydrogen was supplied by the hydrogen storage alloy and oxygen was supplied from air.At room temperature and atmospheric pressure,the open-circuit voltage of the system reached 4.9 V,the system could be discharged at a constant current density of 19 mA/cm2 for about 40 min,and the work voltage was 3.0 V.The system showed good stability for 10 charge-discharge cycles.
出处
《华南师范大学学报（自然科学版）》
CAS
北大核心
2009年第A01期22-23,共2页
Journal of South China Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目(20476034
20673040
20876062)
广东省科技攻关资助项目(2006A50102003)
关键词
微型电源
再生式燃料电池
充放电循环
mini-power source
planar six-cell PEM-URFC stack
charge-discharge cycles
