Hierarchically porous carbon nanosheets derived from alkali metal carbonates and their capacitance in alkaline electrolytes

被引：3
作者：
Nersisyan, Hayk H. [1 ,3 ]
Lee, Seong Hun [1 ]
Choi, Jeong Hun [1 ]
Yoo, Bung Uk [2 ]
Suh, Hoyoung [4 ]
Kim, Jin-Gyu [4 ]
Lee, Jong-Hyeon [1 ,2 ,3 ]
机构：
[1] Chungnam Natl Univ, Dept Adv Mat Engn, Grad Sch, 99 Daehak Ro, Daejeon 305764, South Korea
[2] Chungnam Natl Univ, Grad Sch Energy Sci & Technol, 99 Daehak Ro, Daejeon 305764, South Korea
[3] Chungnam Natl Univ, RASOM, 99 Daehak Ro, Daejeon 305764, South Korea
[4] KBSI, Ctr Electron Microscop Res, 169-148 Gwahang No, Daejeon 305806, South Korea
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2018年 / 207卷
基金：
新加坡国家研究基金会;
关键词：
Hierarchically porous carbon; Combustion synthesis; Carbon nanosheets; Capacitance; PERFORMANCE SUPERCAPACITOR ELECTRODES; LITHIUM-ION BATTERIES; GRAPHENE; TEMPLATE; GRAPHITE; NANOWALLS; SURFACES; SHEETS; ENERGY; FILMS;
D O I：
10.1016/j.matchemphys.2018.01.010
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
With the assistance of alkali metal carbonate M2CO3 (M is Na and K) as a carbon source and silicon as a displacement agent, an exothermic and self-sustaining reaction to produce two-dimensional (2-D) hierarchically porous carbon nanosheets (denoted as HP-CNSs) was achieved. The combustion reaction developed a temperature in the range of 1100-1400 degrees C and resulted in a two-phase product consisting of HP-CNSs and alkali metal silicate (M2O center dot nSiO(2)). After dissolving the M2O center dot nSiO(2) in distilled water, a black carbon powder was formed. Despite the simple synthesis process, the HP-CNSs had a BET surface area of about 178.6-860 m(2)g(-1) and a pore diameter in the range 0.5-150 nm. HP-CNSs based capacitors showed a specific capacity of about 85-240 Fg(-1) and good cyclic performance for over 1000 cycles. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：513 / 521
页数：9
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