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论文类型：期刊论文

第一作者：Yan, Dong

通讯作者：Li, WC (reprint author), Dalian Univ Technol, Sch Chem Engn, State Key Lab Fine Chem, Dalian 116024, Peoples R China.

合写作者：Guo, De-Cai,Lu, An-Hui,Dong, Xiao-Ling,Li, Wen-Cui

发表时间：2019-12-01

发表刊物：JOURNAL OF COLLOID AND INTERFACE SCIENCE

收录刊物：PubMed、SCIE

卷号：557

页面范围：519-527

ISSN号：0021-9797

关键字：Heteroatom doped carbon; Self-assembling; Ionic liquid; Microphase separation; Supercapacitor

摘要：Introduction of hierarchical porous structure and heteroatom in porous carbons are always effective approaches to improve the capacitive performance for supercapacitor. However, it is still a challenge to achieve the desired structure characteristics by a convenient one-step synthesis. Herein, C(16)mimPF(6), an ionic liquid, was introduced in the self-assembly process of poly-benzoxazine to obtain a unique skin-tissue-bone structured hierarchical porous carbon with homogeneous N, P co-doping after carbonization. As the key component, C(16)mimPF(6) works not only as a structure-directing agent to form a hierarchical structure through microphase separation mechanism, thereby promoting the transfer of ion and electron, but also as a heteroatom precursor to contribute an additional pseudocapacitance by doping phosphorus atoms on carbon matrix. The obtained porous carbon displays a high gravimetric capacitance (C-g) of 209 F g(-1) (especially in the carbons prepared without corrosive activation step), a good volumetric capacitance (C-v) of 132 F cm(-3) and an excellent area-normalized capacitance (C-a) of 35 mu F cm(-2). Overall, this work opens a new way to design the polymer-derived carbons with easy heteroatoms doping and hierarchical porous structure. (C) 2019 Elsevier Inc. All rights reserved.