A Passive Vapor-Feed Direct Methanol Fuel Cell Based on a Composite Pervaporation Membrane

被引：9
|
作者：
Wu, Zonglin [1 ]
Wang, Xiaohong [2 ]
Liu, Litian [1 ]
机构：
[1] Tsinghua Univ, Inst Microelect, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Inst Microelect, Tsinghua Natl Lab Informat Sci & Technol, Beijing 100084, Peoples R China
来源：
JOURNAL OF MICROELECTROMECHANICAL SYSTEMS | 2015年 / 24卷 / 01期
基金：
中国国家自然科学基金;
关键词：
mu DMFC; vapor-feed; composite pervaporation membrane; fuel efficiency; STACK; OPTIMIZATION; ETHANOL; DESIGN;
D O I：
10.1109/JMEMS.2014.2327163
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A passive micro direct methanol fuel cell (mu DMFC) by using composite pervaporation membrane for vapor fuel supply without any extra power is presented. A simple and power free vaporizer, which consists of a polydimethylsiloxane (PDMS) active layer and a porous silicon support layer, is integrated with a mu DMFC, converting the methanol from liquid phase to vapor phase. The novel anode vaporizer generates methanol vapor, which diffuses to and reacts with catalyst directly. The composite membranes with different parameters are prepared and tested to optimize the performance of the membrane vaporizer. The developed prototype exhibits a peak power density of 18.2 mW/cm(2) and a maximum fuel efficiency of 78.4% at room temperature. It is believed that the vapor-feed mu DMFC will be more applicable for microsystems. [2014-0058]
引用
收藏
页码：207 / 215
页数：9
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