纳米片
超级电容器
石墨烯
电容
材料科学
比表面积
化学工程
石墨烯泡沫
碳纤维
纳米技术
电极
化学
氧化石墨烯纸
复合数
复合材料
催化作用
有机化学
工程类
物理化学
作者
Ze-Sheng Li,Ling Zhang,Xi Chen,Bolin Li,Shaoyi Wang,Qingyu Li
标识
DOI:10.1016/j.electacta.2018.11.002
摘要
Newly three-dimensional (3-D) graphene-like carbon nanosheet network is synthesized by a simple and efficient buried-protection KOH activation technology with a surfactant (Tween-20) as carbon source (molecular precursor). The as-synthesized material possesses favorable three-dimensional network structure and hierarchical porous structure (with a specific surface area of 2017.3 m2 g−1). As a promising supercapacitor electrode, a relatively high specific capacitance of 316.8 F g−1 at a current density of 1 A g−1 in 1 mol L−1 KOH aqueous solution, along with good cycling stability (with a 92.5% retention rate after 2000 cycles) are demonstrated for the as-prepared electrode. The 3-D graphene-like carbon nanosheet network material exhibits ideal capacitive behavior indicating a promising electrode material for high-performance supercapacitors.
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