Highly active N,O-doped hierarchical porous carbons for high-energy supercapacitors

被引：7

作者：

Ziyang Zhou ^{[1
]}

Ling Miao ^{[1
]}

Hui Duan ^{[1
]}

Zhiwei Wang ^{[2
]}

Yaokang Lv ^{[3
]}

Wei Xiong ^{[4
]}

Dazhang Zhu ^{[1
]}

Liangchun Li ^{[1
]}

Mingxian Liu ^{[1
,2
,5
]}

Lihua Gan ^{[1
]}

机构：

[1] Shanghai Key Lab.of Chemical Assessment and Sustainability,School of Chemical Science and Engineering,Tongji University

[2] State Key Laboratory of Pollution Control and Resources Reuse,Shanghai Institute of Pollution Control and Ecological Security,School of Environmental Science and Engineering,Tongji University

[3] College of Chemical Engineering,Zhejiang University of Technology

[4] School of Chemistry and Environmental Engineering,Key Laboratory for Green Chemical Process (Ministry of Education),Hubei Key Lab.of Novel Reactor &Green Chemical Technology,Wuhan Institute of Technology

[5] College of Chemistry and Molecular Engineering,Zhengzhou University

来源：

ChineseChemicalLetters | 2020年 / 31卷 / 05期

基金：

中央高校基本科研业务费专项资金资助; 中国国家自然科学基金;

关键词：

N; O-doped carbon; Hierarchical porous structure; Faradaic activity; Supercapacitor; High energy density;

D O I：

暂无

中图分类号：

TM53 [电容器]; O613.71 [碳C];

学科分类号：

摘要：

Highly active N,O-doped hierarchical porous carbons（NOCs） are fabricated through the in-situ polymerization and pyrolysis of o-tolidine and p-benzoquinone.As-prepared NOCs have a variety of faradaic-active species（N-6,N-5 and O-I）,high ion-accessible platform（1799 m;/g） and hierarchically micro-meso-macro porous architecture.Consequently,the resultant NOC electrode delivers an advantageous specific capacitance（311 F/g）,with a pseudocapacitive contribution of 37% in a threeelectrode configuration,and an enhanced energy output of 18.0 Wh/kg@350 W/kg owing to the enlarged faradaic effect in an aqueous redox-active cell.Besides,a competitive energy density（74.9 Wh/kg） and high-potential durability（87.8%） are achieved in an ionic liquid（EMIMB F4）-assembled device.This study sheds light on a straightforward avenue to optimize the faradaic activity and nanoarchitecture for advanced supercapacitors.

引用

页码：1226 / 1230

页数：5

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