A HIGH-PERFORMANCE ANION EXCHANGE MEMBRANE BASED ON BI-GUANIDINIUM BRIDGED POLYSILSESQUIOXANE FOR ALKALINE FUEL CELL APPLICATION

摘要：

A bi-guanidinium bridged polysilsesquioxane composite membrane was fabricated for the first time, which showed impressive hydroxide conductivity and decent alkali-stability. Its direct borohydride fuel cell yielded a peak power density of 312 mWcm‐2 at ca. 700 mAcm‐2 and 40°C, which is to our knowledge the highest ever achieved with anion exchange membrane (AEM). The cell could discharge at 200 mAcm‐2 for 50 h with voltage maintained at 0.76V. The strong basicity and resonance of bi-guanidinium cations are the enabling factor for the good membrane properties and fuel cell performance. This work provides a new strategy for non-ammonium AEM fabrication, and the synthetic chemistry involved can possibly extend for fabricating versatile AEMs with similar structure.

关键词： anion exchange membrane bi-guanidinium bridged polysilsesquioxane alkaline fuel cell

作者: Chao Qu Huamin Zhang Fengxiang Zhang Bo Liu

作者单位: Center for Energy Storage Batteries and Technologies, Dalian Institute of Chemical Physics,Chinese Academy of Sciences, Dalian, China. 457 Zhongshan Road, Dalian, China, 116023

会议类型: 国际会议

会议名称: The 7th International Green Energy Conference & The 1st DNL Conference on Clean Energy(第七届绿色能源国际会议暨第一届DNL洁净能源会议(IGEC)

会议地点: 大连

会议语种:英文

页码: 29

在线出版日期: 2012-05-28（万方平台首次上网日期，不代表论文的发表时间）