Eucalyptus derived heteroatom-doped hierarchical porous carbons as electrode materials in supercapacitors

被引：41

作者：

Wen, Yanliang ^{[1
]}

Chi, Liang ^{[2
]}

Wenelska, Karolina ^{[1
]}

Wen, Xin ^{[1
]}

Chen, Xuecheng ^{[1
]}

Mijowska, Ewa ^{[1
]}

机构：

[1] West Pomeranian Univ Technol, Fac Chem Technol & Engn, Dept Nanomat Physicochem, Piastow Ave 42, PL-71065 Szczecin, Poland

[2] Shanghai Inst Space Power Sources SISP, 2965 Dongchuan Rd, Shanghai, Peoples R China

来源：

SCIENTIFIC REPORTS | 2020年 / 10卷 / 01期

关键词：

HIGH-ENERGY DENSITY; HIGH-SURFACE-AREA; HIGH-PERFORMANCE; GRAPHENE OXIDE; NANOSHEETS; ACTIVATION; BIOMASS; WASTE; CAPACITANCE; FABRICATION;

D O I：

10.1038/s41598-020-71649-9

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Carbon-based supercapacitors have aroused ever-increasing attention in the energy storage field due to high conductivity, chemical stability, and large surface area of the investigated carbon active materials. Herein, eucalyptus-derived nitrogen/oxygen doped hierarchical porous carbons (NHPCs) are prepared by the synergistic action of the ZnCl2 activation and the NH4Cl blowing. They feature superiorities such as high specific surface area, rational porosity, and sufficient N/O doping. These excellent physicochemical characteristics endow them excellent electrochemical performances in supercapacitors: 359 F g(-1) at 0.5 A g(-1) in a three-electrode system and 234 F g(-1) at 0.5 A g(-1) in a two-electrode system, and a high energy density of 48 Wh kg(-1) at a power density of 750 W kg(-1) accompanied by high durability of 92% capacitance retention through 10,000 cycles test at a high current density of 10 A g(-1) in an organic electrolyte. This low-cost and facile strategy provides a novel route to transform biomass into high value-added electrode materials in energy storage fields.

引用

页数：12

共 72 条

[1] Flexible polyaniline/reduced graphene oxide/carbon fiber composites applied as electrodes for supercapacitors [J].