Cellulose Framework Directed Construction of Hierarchically Porous Carbons Offering High-Performance Capacitive Deionization of Brackish Water

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• 作者：Saikat Dutta ; Shu-Yun Huang ; Cephas Chen ; Jeffrey E. Chen ; Zeid A. Alothman ; Yusuke Yamauchi ; Chia-Hung Hou ; Kevin C.-W. Wu
• 刊名：ACS Sustainable Chemistry & Engineering
• 出版年：2016
• 出版时间：April 4, 2016
• 年：2016
• 卷：4
• 期：4
• 页码：1885-1893
• 全文大小：499K
• ISSN：2168-0485

文摘

We demonstrate a cellulose-templating method for synthesizing a hierarchically porous carbon electrode that is capable of high-performance capacitive deionization (CDI). Hierarchically porous carbons (denoted as HPC-X, X = 500–900 °C) of an exceptionally high surface area up to 2535 m² g^–1 and wide-range pore size distribution (macro-, meso-, and micropores) were obtained via the pyrolysis of macroporous cellulose fibrous-templated resorcinol-formaldehyde-triaminopyrimidine (RF-TPF) polymers. The improved electrosorption performance of HPC-800 electrode can be ascribed to the enhanced specific surface area, favorable hierarchical structure, and excellent capacitive electric double layer behaviors.