第19卷
第9期
2011年9月
文章编号
1004-924X(2011)09-2079-06
光学精密工程
Optics and Precision Engineering
Vol. 19No. 9
Sep.2011
使用高浓度甲醇的微型直接甲醇燃料电池
王路文1，张宇峰1.2*，何洪"，赵悠然1，刘晓为1,2（1.哈尔滨工业大学MEMS中心，黑龙江哈尔滨150001
2.哈尔滨工业大学微系统与微结构制造教育部重点实验室，黑龙江哈尔滨150001)
摘要：以丙烯睛-丁二烯-苯乙烯（ABS)共象物材料作为流场基体，以不锈钢薄片作为集流板，设计制作了一种新型空气自呼吸式微型真接甲醇燃料电池。采用线切制、激光切割等微加工技术制作集流板，并在集流板表面溉射金作防电蚀处理以降低接触电阻。通过对电池阳极传质的建模仿真以及性能测试发现，与传统微型DMFC的阳极结构相比，该阳极结构有效地提高了甲醇传质阻力，减小了甲醇渗透，更适于应用高浓度甲醇燃料。稳定性测试显示该微型DMFC在较高浓度(7mol/L)和很小流速(0.1ml/min）下可以稳定工作，满足了便携式电源对高能量密度的需求。该电范还具有轻
质、可批量化生产等优点，便于便携式电源的进一步推广和应用。关键调：直接甲醇然料电池；空气自呼吸；甲醇滚度
中图分类号：TM911.4
文献标识码：A
doi; 10. 3788/OPE, 20111909. 2079
Development of micro direct methanol fuel cells with high methanol concentration
WANG Lu-wen', ZHANG Yu-fengl-* , HE Hong', ZHAO You-ran', LIU Xiao-weil-
(1.MEMSCenter,Harbin Institute of Technology,Harbin150001,China;
2.Key Laboratory of Micro-systems and Micro-structure
Manufacturing,Ministry of Education,Harbin [nstitute of TechnologyHarbin 150001,China)
Corresponding author,E-mail:yufeng_zhang@hit.edu.cn
Abstract: A novel air-breathing micro Direct Methanol Fuel Cell (DMFC) was designed and fabricated by taking Acrylonitrile-Butadiene-Styrene(ABS) as a basic material and the stainless steel plate as a current collector. The current collector was fabricated by using micro wire cutting and laser cutting technologies,and its surface was sputterd onto a layer of Au to avoid the electrochemistry corrosion and to reduce the contact resistance. Methanol transport was analysed by the anode model of micro DMFC and then the micro-DMFC was tested at different operating parameters, By comparing with the conventional structure, both results show that the novel anode structure is more suitable for the appli-cation of high methanol concentration because of high resistance to methanol transportation and low methanol crossover, It is revealed that this micro-DMFC can work steadily at a high methanol concen-tration of 7 mol/L and a slow velocity of o. 1 ml/min and it is also meaningful for the future applica-
收稿日期：2010-10-27；修订日期：2011-01-25.
基金项目：国家自然科学基金资助项目（No.60806037、61076105)；教育部高等学校博士学科点专项科研基金资助项
目（No.20102302110026)；中央高校基本科研业务费专项基金资助项目（No,HIT.NSRIF.2009008）