摘要
为了提高燃料电池的机械强度并降低加工成本,设计了一种基于不锈钢材料的空气自呼吸式微型直接甲醇燃料电池(DMFC).采用高温微型冲压技术制作电池的极板,并在其表面溅射Au和TiN来防止电化学腐蚀和减少接触电阻.在不同运行参数条件下对电池进行性能和稳定性的测试,结果表明阳极流速、甲醇浓度以及工作温度等均对电池性能有较明显的影响.该自呼吸式微型直接甲醇燃料电池在室温(20℃)条件下最高功率密度达到23.38 mW/cm2,并在温度40℃时可稳定地长时间工作,具有一定的应用价值.
In order to enhance the mechanical strength and to reduce the fabrication cost, an air-breathing micro direct methanol fuel cell （DMFC） using the stainless steel was designed in this paper. With the help of micro-stamping technology, the monopolar plates were fabricated under high temperature. A layer of Au/TiN was sputtered onto the surface of each monopolar plate to avoid the electrochemical corrosion and to decrease the contact resistance. The micro DMFC was tested under different operating parameters, and it was found that the anode flow rate, methanol concentration, and cell temperature had significant effects on the cell performance. The results showed that the peak power density of this micro DMFC reached 23.38 mW/cm： at room temperature （20 ℃）, and the cell could steadily work at 40℃ for a long term operation, which was meaningful for future applications.
出处
《纳米技术与精密工程》
EI
CAS
CSCD
2011年第5期432-435,共4页
Nanotechnology and Precision Engineering
基金
国家自然科学基金资助项目(60806037
61076105)
教育部高校博士点基金资助项目(20070213057)
重庆大学新型微纳器件与系统技术国家重点学科实验室基金资助项目(2009MS03)
关键词
自呼吸
直接甲醇燃料电池
极板
最高功率密度
air-breathing
direct methanol fuel cell
monopolar plate
peak power density
