Biowaste-Derived Hierarchical Porous Carbon Nanosheets for Ultrahigh Power Density Supercapacitors

被引：102

作者：

Yu, Dengfeng ^{[1
,2
]}

Chen, Chong ^{[3
]}

Zhao, Gongyuan ^{[3
]}

Sun, Lei ^{[3
]}

Du, Baosheng ^{[1
,2
]}

Zhang, Hong ^{[1
,2
]}

Li, Zhuo ^{[3
]}

Sun, Ye ^{[1
,2
]}

Besenbacher, Flemming ^{[4
,5
]}

Yu, Miao ^{[3
]}

机构：

[1] Harbin Inst Technol, Condensed Matter Sci & Technol Inst, Harbin 150080, Heilongjiang, Peoples R China

[2] Harbin Inst Technol, Dept Phys, Sch Sci, Harbin 150080, Heilongjiang, Peoples R China

[3] Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Sch Chem & Chem Engn, Harbin 150001, Heilongjiang, Peoples R China

[4] Aarhus Univ, Interdisciplinary Nanosci Ctr iNANO, DK-8000 Aarhus, Denmark

[5] Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus, Denmark

来源：

CHEMSUSCHEM | 2018年 / 11卷 / 10期

基金：

中国国家自然科学基金;

关键词：

biomass; carbon; electrochemistry; mesoporous materials; supercapacitors; NITROGEN-DOPED CARBON; PERFORMANCE SUPERCAPACITORS; SURFACE-AREA; ELECTRODES; BIOMASS; ANODES; FABRICATION; TEMPLATE; NETWORKS; DESIGN;

D O I：

10.1002/cssc.201800202

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Low-cost activated carbons with high capacitive properties remain desirable for supercapacitor applications. Herein, a three-dimensional scaffolding framework of porous carbon nanosheets (PCNSs) has been produced from a typical biowaste, namely, ground cherry calyces, the specific composition and natural structures of which have contributed to the PCNSs having a very large specific surface area of 1612 m(2) g(-1), a hierarchical pore size distribution, a turbostratic carbon structure with a high degree graphitization, and about 10% oxygen and nitrogen heteroatoms. A high specific capacitance of 350 Fg(-1) at 0.1 A g(-1) has been achieved in a two-electrode system with 6m KOH; this value is among the highest specific capacitance of biomass-derived carbon materials. More inspiringly, a high energy density of 22.8 Wh kg(-1) at a power density of 198.8 W kg(-1) can be obtained with 1m aqueous solution of Li2SO4, and an ultrahigh energy density of 81.4 Wh kg(-1) at a power density of 446.3W kg(-1) is realized with 1-ethyl-3-methylimidazolium tetrafluoroborate electrolyte.

引用

页码：1678 / 1685

页数：8

共 54 条

[1] High-performance symmetric supercapacitors based on carbon nanosheets framework with graphene hydrogel architecture derived from cellulose acetate [J].