Facile preparation of polybenzoxazine-based carbon microspheres with nitrogen functionalities:effects of mixed solvents on pore structure and supercapacitive performance

作     者：Uthen Thubsuang Suphawadee Chotirut Apisit Thongnok Archw Promraksa Mudtorlep Nisoa Nicharat Manmuanpom Sujitra Wongkasemjit Thanyalak Chaisuwan 

作者机构：School of Engineering and TechnologyWalailak UniversityNakhon Si Thammarat 80160Thailand School of ScienceWalailak UniversityNakhon Si TTiammarat 80160Thailand The Petroleum and Petrochemical CollegeChulalongkom UniversityBangkok 10330Thailand Center of Excellence on Petrochemical and Materials TechnologyBangkok 10330Thailand 

出 版 物：《Frontiers of Chemical Science and Engineering》 (化学科学与工程前沿（英文版）)

年 卷 期：2020年第14卷第6期

页      面：1072-1086页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 0817[工学-化学工程与技术] 08[工学] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：Walailak University(Grants No.WU60103) the Thailand Research Fund and Office of the Higher Education Commission(MRG6180042) 

主　　题：PBZ carbon porous materials microsphere supercapacitor 

摘      要：In this study,polybenzoxazine(PBZ)-based carbon microspheres were prepared via a facile method using a mixture of formaldehyde(F)and dimethylformamide(DMF)as the *** PBZ microspheres were successfully obtained at the F/DMF weight ratios of 0.4 and *** microspheres exhibited high nitrogen contents after *** microstructures of all the samples showed an amorphous phase and a partial graphitic *** porous carbon with the F/DMF ratio of 0.4 showed significantly higher specific capacitance(275.1 F·g^-1)than the reference carbon(198.9 F·g^-1)at 0.05 A-g This can be attributed to the synergistic electrical double-layer capacitor and pseudo-capacitor behaviors of the porous carbon with the F/DMF ratio of *** presence of nitrogen/oxygen functionalities induced pseudo-capacitance in the microspheres,and hence increased their total specific *** activation with CO2,the specific surface area of the carbon microspheres with the F/DMF ratio of 0.4 increased from 349 to 859 m^2•g^-1 and the specific capacitance increased to 424.7 F·g^-1 This value is approximately two times higher than that of the reference *** results indicated that the F/DMF ratio of 0.4 was suitable for preparing carbon microspheres with good supercapacitive *** nitrogen/oxygen functionalities and high specific surface area of the microspheres were responsible for their high capacitance.