Stoica Daniela, Alloin Fannie, Marais Stephane, Langevin Dominique, Chappey Corinne, Judeinstein Patrick
Laboratoire d'Electrochimie et de Physico-chimie des Materiaux et des Interfaces (LEPMI), 1130 Rue de la Piscine, Saint Martin d'Heres, France.
J Phys Chem B. 2008 Oct 2;112(39):12338-46. doi: 10.1021/jp804787x. Epub 2008 Sep 6.
Polymer electrolytes, using a poly(epichlorhydrin-allyl glycidyl ether) copolymer as matrix, are shown to perform well in alkaline fuel cell electrolyte. An anion-conducting network is obtained by the incorporation of cyclic diamines, 1,4-diazabicyclo[2.2.2]octane (DABCO) and 1-azabicyclo[2.2.2]octane (quinuclidine). The physicochemical and electrochemical characteristics are evaluated. The best conductivity of 1.3.10 (-2) S/cm is obtained at 60 degrees C and a relative humidity of RH = 98%. Ionic conductivity is particularly sensitive to relative humidity. To gain insight into the OH (-) conduction mechanism and the role of water, sorption measurements versus water activity, differential scanning calorimetry, and NMR measurements are carried out.
以聚（环氧氯丙烷-烯丙基缩水甘油醚）共聚物为基体的聚合物电解质在碱性燃料电池电解质中表现良好。通过加入环状二胺1,4-二氮杂双环[2.2.2]辛烷（DABCO）和1-氮杂双环[2.2.2]辛烷（奎宁环）获得了阴离子传导网络。对其物理化学和电化学特性进行了评估。在60℃和相对湿度RH = 98%时获得了1.3×10⁻² S/cm的最佳电导率。离子电导率对相对湿度特别敏感。为了深入了解OH⁻传导机制和水的作用，进行了与水活度相关的吸附测量、差示扫描量热法和核磁共振测量。
