A study on high electrochemical capacitance of ion exchange resin-based activated carbons for supercapacitor

被引：22

作者：

Han, Sang-Jin ^{[1
]}

Kim, Young-Ha ^{[1
]}

Kim, Ki-Seok ^{[1
]}

Park, Soo-Jin ^{[1
]}

机构：

[1] Inha Univ, Dept Chem, Inchon 402751, South Korea

来源：

CURRENT APPLIED PHYSICS | 2012年 / 12卷 / 04期

关键词：

Activated carbon; Polystyrene-based ion exchangeable resin; Porosity; Electric double-layer capacitor; CHEMICAL ACTIVATION; ELECTRODE MATERIAL; PERFORMANCE;

D O I：

10.1016/j.cap.2012.01.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, activated carbons (ACs) with high porosity are synthesized from polystyrene-based ion exchange resin (PIR) by potassium hydroxide (KOH) chemical activation, and the influence of the KOH-to-PIR ratio on the porosity of the ACs and electrochemical characteristics is investigated. As a result, PIR is successfully converted into ACs with well-developed micro and mesopores. The specific surface areas and pore volumes are increased with an increase in the KOH-to-PIR ratio. Furthermore, it is found that increasing the amount of KOH led to a transformation of the micropores into meso-and macropores. The electrochemical performance of the PIR-based ACs is enhanced by high specific surface area and oxygen functional groups. In the application to electric double-layer capacitors (EDLCs), the PIR-based AC with a KOH-to-PIR ratio of 4 (PIR-4) has the highest specific capacitance (258 F g(-1)) and shows excellent electrochemical stability. Thus, it is thought that the PIR-based ACs are suitable electrode materials for EDLCs. (C) 2012 Elsevier B. V. All rights reserved.

引用

页码：1039 / 1044

页数：6

共 29 条

[1] The preparation of activated carbon from macadamia nutshell by chemical activation [J].