Double Soft-Template Synthesis of Nitrogen/Sulfur-Codoped Hierarchically Porous Carbon Materials Derived from Protic Ionic Liquid for Supercapacitor

作者：Sun, Li; Zhou, Hua; Li, Li; Yao, Ying^*; Qu, Haonan; Zhang, Chengli; Liu, Shanhu; Zhou, Yanmei^*

来源：ACS Applied Materials & Interfaces, 2017, 9(31): 26088-26095.

DOI：10.1021/acsami.7b07877

• protic ionic liquid
• double soft-template
• hierarchically porous carbon materials
• nitrogen/sulfur-codoped
• supercapacitor

Heteroatom-doped hierarchical porous carbon materials derived from the potential precursors and prepared by a facile, effective, and low pollution strategy have recently been particularly concerned in different research fields. In this study, the interconnected nitrogen/sulfur-codoped hierarchically porous carbon materials have been successfully obtained via one-step carbonization of the self-assembly of [Phne] [HSO4] (a protic ionic liquid originated from dilute sulfuric acid and phenothiazine by a straightforward acid base neutralization) and the double soft-template of OP-10 and F-127. During carbonization process, OP-10 as macroporous template and F-127 as mesoporous template were removed, while [Phne] [HSO4] not only could be used as carbon, nitrogen, and sulfur source, but also as a pore forming agent to create micropores. The acquired carbon materials for supercapacitor not only hold a large specific capacitance of 302 F g(-1) even at 1.0 A g(-1), but also fine rate property with 169 F g(-1) at 10 A g(-1). and excellent capacitance retention of nearly 100% over 5000 circulations in 6 M KOH electrolyte. Furthermore, carbon materials also present eximious rate performance with 70% in 1 M Na2SO4 electrolyte.

• 出版日期2017-8-9
• 单位北京理工大学; 河南大学