Hierarchical porous carbon sheets derived on a MgO template for high-performance supercapacitor applications

被引：32

作者：

Wen, Yanliang ^{[1
,2
]}

Zhang, Lipeng ^{[1
]}

Liu, Jie ^{[1
]}

Wen, Xin ^{[1
,2
]}

Chen, Xuecheng ^{[1
,2
]}

Ma, Jiali ^{[1
]}

Tang, Tao ^{[1
]}

Mijowska, Ewa ^{[2
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Jilin, Peoples R China

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

来源：

NANOTECHNOLOGY | 2019年 / 30卷 / 29期

基金：

美国国家科学基金会;

关键词：

hierarchical porous carbon sheet; electrochemistry; porous carbon material; template synthesis; KOH activation; HIGH-POWER; ELECTRODE MATERIAL; GREEN SYNTHESIS; NANOCAGES; FILMS; NANOSPHERES; NANOTUBES; FRAMEWORK; DENSITY; SULFUR;

D O I：

10.1088/1361-6528/ab0ee0

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Carbon-based supercapacitors have attracted considerable academic and practical interest due to their advantages of low cost, high power density, and superior durability. Herein, we report the facile synthesis of hierarchical porous carbon sheets (HPCSs) featuring a high specific surface area (2788 m(2) g(-1)), derived from pyrrole through a combination of MgO template carbonization and KOH activation. The hierarchical pores with the co-existence of micropores and mesopores were obtained in the HPCSs. Benefiting from the high surface area, well-balanced pore size distribution as well as high conductivity, the prepared HPCSs exhibited a high gravimetric specific capacitance of 226.4 F g(-1) at a scan rate of 1 mV s(-1) in the electrolyte of 1 M H2SO4 in the two-electrode configuration. Moreover, the excellent electrochemical long-cycle stability has been demonstrated by 10 000 cycles of rapid charging-discharging at 10 A g(-1) with a capacitance retention of 97.3%. The electrochemical performance clearly indicates the promising potential of using HPCSs as electrode materials for supercapacitors.

引用

页数：10

共 54 条

[21] Hierarchical carbon nanocages confining high-loading sulfur for high-rate lithium-sulfur batteries [J].