Coffee waste-derived porous carbon based flexible supercapacitors

被引：23
作者：
Pandey, Keshab [1 ]
Jeong, Hae Kyung [1 ,2 ]
机构：
[1] Daegu Univ, Dept Phys, Gyongsan 38453, South Korea
[2] Daegu Univ, Dept Mat Energy Sci & Engn, Gyongsan 38453, South Korea
来源：
CHEMICAL PHYSICS LETTERS | 2022年 / 809卷
关键词：
Coffee waste; Flexible energy storage devices; Supercapacitor; Nitrogen doping; REDUCED GRAPHITE OXIDE; ACTIVATED CARBON; PERFORMANCE;
D O I：
10.1016/j.cplett.2022.140173
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Nitrogen doped porous activated carbon was synthesized from coffee waste for flexible supercapacitor appli-cations. Nitrogen of 8.0 at% was doped, and specific capacitance of 139F g-1 at 0.5 A/g with specific energy of 12.5 Wh kg-1 and specific power of 202 W kg-1 was obtained for flexible supercapacitors. Eventually, high specific capacitance retention (90.5 %) as well as high coulombic efficiency (84.5 %) after 5,000 cycles with reliable flexibility were shown. The results demonstrated that the synthesized nitrogen-doped coffee waste derived carbon electrode could be used for the flexible supercapacitor electrodes.
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页数：8
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