3D interconnected honeycomb-like and high rate performance porous carbons from petroleum asphalt for supercapacitors

被引：42

作者：

Pan, Lei ^{[1
]}

Li, Xinxin ^{[1
]}

Wang, Yixian ^{[1
]}

Liu, Jialiang ^{[1
]}

Tian, Wei ^{[1
]}

Ning, Hui ^{[1
]}

Wu, Mingbo ^{[1
]}

机构：

[1] China Univ Petr, Coll Chem Engn, State Key Lab Heavy Oil Proc, Qingdao 266580, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2018年 / 444卷

基金：

中国国家自然科学基金;

关键词：

Hierarchical porous carbon; Petroleum asphalt; Molten salt medium; Supercapacitors; FACILE SYNTHESIS; ELECTRODE MATERIALS; KOH ACTIVATION; PORE STRUCTURE; GRAPHENE; NANOSHEETS; NANOFIBERS; NANOCAGES; SIZE;

D O I：

10.1016/j.apsusc.2018.03.122

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper, 3D interconnected honeycomb- like hierarchical porous carbons (HPCs) are prepared from petroleum asphalt via in-situ KOH activation in a molten salt medium. As symmetry two electrodes for supercapacitors, HPCs with high specific surface area of 2227 m(2) g (1) show high rate performance, i.e. 265 F g (1) at 0.05 A g (1), 221 F g (1) at 20 A g (1), and superior cycle stability with 91.1% capacitance retention at 5 A g (1) after 10,000 cycles in 6 M KOH electrolyte. This facile strategy to prepare massive HPCs from cheap petroleum asphalt can provide high performance electrode materials for energy storage devices. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：739 / 746

页数：8

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