摘要
中高温运行的质子交换膜燃料电池(PEMFCs)由于有望克服散热效率低、环境耐受性(CO耐受性)差等技术障碍而成为PEMFC发展的主要方向。然而,中高温PEMFCs面临的主要技术挑战之一就是能够满足燃料电池工作要求的质子交换膜。通过采用原位自由基聚合反应,制备了含咪唑环的高分子与Nafion复合质子交换膜,并对所制备的质子交换膜进行了表征。结果显示,该类质子交换膜具有良好的热稳定性和机械性能;在160℃无水条件下,其电导率为6.47×10-4 S.cm-1,显示了用于高温质子交换膜的应用前景。
Technical ＂bottlenecks＂ for proton exchange membrane fuel cells（PEMFCs） such as intolerance to CO and difficult heat rejection may be surmounted while operating at elevated temperature.However,one of the very important challenges for elevated temperature PEMFCs is the selection of membrane materials.In this communication,Nafion/polymer containing imidazole moieties composite membranes were synthesized via in situ free radical polymerization.The formed membranes shows good thermal stability and mechanism intension,proton conductivity reaching 6.47×10,4 S·cm,1 at 160 ℃ without external humidification,demonstrating the potential application in the field of elevated temperature PEMFCs.
出处
《电源技术》
CAS
CSCD
北大核心
2011年第4期473-475,共3页
Chinese Journal of Power Sources
基金
中央高校专项基金资助
国家自然科学基金资助项目(20806061)
关键词
咪唑
质子交换膜
电导率
imidazole
proton exchange membrane
ionic conductivity
