Characterization of Activated Carbon Paper Electrodes Prepared by Rice Husk-Isolated Cellulose Fibers for Supercapacitor Applications

Molecules

HyeKyoung Shin¹  LeeKu Kwac¹  HongGun Kim¹  Yong-Sun Kim¹ 

[1] Institute of Carbon Technology, Jeonju University, 303 Cheonjam-ro, Wansan-gu, Jeonju-si, Jeollabuk-do 55069, Korea;

关键词: supercapacitor;    rice husk;    cellulose fibers;    activated carbon paper;   

DOI  :  10.3390/molecules25173951

来源: DOAJ

【 摘 要 】

For the preparation of activated carbon papers (APCs) as supercapacitor electrodes, impurity substances were removed from rice husks, before carbonization and various activation temperature treatments, to optimize electro chemical efficiency. The porosities and electrochemical performances of the ACPs depended strongly on activation temperature: The specific surface area increased from 202.92 (500 °C) to 2158.48 m² g⁻¹ (1100 °C). XRD and Raman analyses revealed that ACP graphitization also increased with the activation temperature. For activation at 1100 °C, the maximum specific capacitance was 255 F g⁻¹, and over 92% of its capacitance was retained after 2000 cycles.

【 授权许可】

Unknown