超级电容器
材料科学
热解
氧气
碳纤维
掺杂剂
电化学
电解质
活性炭
比表面积
化学工程
电容
多孔性
兴奋剂
纳米技术
电极
复合材料
光电子学
化学
有机化学
复合数
催化作用
工程类
物理化学
吸附
作者
Erman Taer,Rika Taslim,Apriwandi Apriwandi
出处
期刊:ChemNanoMat
[Wiley]
日期:2021-11-26
卷期号:8 (2)
被引量:6
标识
DOI:10.1002/cnma.202100388
摘要
Abstract This study reported an ultrahigh specific capacitance of a supercapacitor, using self‐oxygen doped 3D‐porous carbon derivatives from dried banana leaves. The samples were synthesized by ZnCl 2 impregnation at different temperature pyrolysis of 700–900 °C. Furthermore, the overall process significantly increased the specific surface area from 429.6 to 860.4 m 2 g −1 followed by the formation of 3D‐interconnected pores structures. Unexpectedly, the activated carbon demonstrated high‐level oxygen dopants between 9.47–12.45%. These valuable physical features showed a ultrahigh specific capacitance of 401 F g −1 and 235 F g −1 in a two‐electrode configuration system, using electrolytes of 1 M H 2 SO 4 and 6 M KOH, respectively. Also, electrochemical properties were evaluated in the form of pellet binder‐free materials. Porous carbon sources were known to generate extensive specific energy of 55.69 Wh kg −1 and specific power of 200.09 W kg −1 . Based on the technique and results, the use of hierarchical 3D‐porous carbon derivatives is validated as robust electrode materials in developing high‐performance electrochemical energy storage.
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