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论文类型：期刊论文

发表时间：2013-03-27

发表刊物：ACS APPLIED MATERIALS & INTERFACES

收录刊物：SCIE、EI、PubMed、Scopus

卷号：5

期号：6

页面范围：2104-2110

ISSN号：1944-8244

关键字：phosphate functionalization; carbon nanotube; fructose; supercapacitor

摘要：Phosphate-functionalized carbon nanotube (CNT)-containing carbon composites with hierarchical porous structure have been synthesized by a simple soft-template hydrothermal method followed by heat treatment. The resulting carbon composites are characterized by FE-SEM, TEM, TGA, FTIR microspectroscopy, and nitrogen sorption techniques. The electrochemical performance of the carbon composites as electrode materials for supercapacitors is also investigated. The results show that CNTs can be uniformly embedded in the carbon matrix, and the phosphate groups are introduced into the carbon composites successfully. The addition of CNTs with suitable content significantly improves the rate capability of carbon composites in 6 M KOH aqueous solution. Cell voltage window can be extended to 1.2 V when increasing the heat treatment temperature of carbon composites to 800 degrees C, and the resulting composites exhibit highly stable performance in supercapacitors at high current load of 5 A g(-1) and wide cell voltage of 1.2 V.