Characterization of Surface Ionic Activity of Proton Conductive Membranes by Conductive Atomic Force Microscopy
Characterization of Surface Ionic Activity of Proton Conductive Membranes by Conductive Atomic Force Microscopy
复制标题
传导原子力显微镜表征质子传导膜的表面离子活性
DOI：
--
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Dangdong Zhu
中科院分区：
文献类型：
--
作者：
T. Nguyen;M. Nguyen;G. Lin;N. Rao;Xin Xie;Dangdong Zhu
质子传导膜 (PEM) 的电导率取决于聚合物结构内及其外表面上的离子簇的特性。这项工作探索使用导电原子力显微镜来表征这些膜的表面离子活性，并研究表面离子活性对 PEM 燃料电池性能的影响。获得的结果表明，只有一小部分膜表面是活性的，并且该部分随着气相中的相对湿度而增加。此外，膜表面离子活性与其形貌之间不存在预期的相关性。
The conductivity of a proton-conducting membrane (PEM) depends on the characteristics of the ionic clusters both within the polymeric structure and on its outer surfaces. This work explores the use of conductive atomic force microcopy to characterize the surface ionic activity of these membranes and investigates the effect of the surface ionic activity on the performance of PEM fuel cells. Results obtained show that only a fraction of the membrane surfaces is active and that this fraction increases with the relative humidity in the gas phase. Also, no correlation exists between the membrane surface ionic activity and its topography as expected.