碳气凝胶电极用于NaCl溶液电容性除盐的研究  

APPLICATION OF CARBON AEROGELS ELECTRODES TO CAPACITIVE DEIONIZATION OF NACL SOLUTIONS

作　　者：秦仁喜[1] 沈军[1] 薛辉[1] 吴广明[1] 周斌[1] 

机构地区：[1]同济大学波耳固体物理研究所,上海200092

出　　处：《水处理技术》2005年第4期53-55,共3页Technology of Water Treatment

基　　金：国家自然科学基金委重点基金项目(20133040);上海市自然科学基金项目(02ZE14101);上海市纳米科技与产业发展促进中心项目(0216nm035);上海市重点学科建设项目。

摘　　要：碳气凝胶是一种新型多孔碳材料,具有比表面积大、电导率高的特点。本文通过常压干燥制备了碳气凝胶,研究测试了其结构特性,用N aCl溶液模拟海水,利用CD I原理,以碳气凝胶作电极进行了N aC l溶液的除盐实验。实验表明,决定碳气凝胶的除盐效果的主要因素为比表面积和电导率。在不同配比结构中,以R/C为1500、M值为30%的碳气凝胶电极的除盐效果最佳。利用双电层电容模型解释探讨了碳气凝胶电极的除盐机理。Carbon aerogels are a kind of new porous carbon materials and have high specific surface area and conductance. In this paper, carbon aerogels are obtained through ordinary pressure drying; their structural properties are investigated. Carbon aerogels are used as the electrode material to desalinate the NaCl solutions instead of the simulative seawater by capacitive deionization principle. It is shown that the desalinated efficiency is mainly decided by specific surface area and conductance. The sample with R/C being 1500 and M being 30% is the best one of all the carbon earogels in desalination. The mechanism of desalination is discussed with the model of electronic double-layer capacitor.

关 键 词：碳气凝胶 除盐 电极 电容性 NACL溶液 比表面积 多孔碳材料 双电层电容 常压干燥 结构特性 电导率 CDI 模型解 实验 

分 类 号：TM53[电气工程—电器] TU991.263[建筑科学—市政工程]