What are the practical limits for the specific surface area and capacitance of bulk sp~2 carbon materials?

被引：0

作者：

Yanhong Lu ^{[1
,2
,3
]}

Guankui Long ^{[2
,3
]}

Long Zhang ^{[2
,3
]}

Tengfei Zhang ^{[2
,3
]}

Mingtao Zhang ^{[2
,3
]}

Fan Zhang ^{[2
,3
]}

Yang Yang ^{[2
,3
]}

Yanfeng Ma ^{[2
,3
]}

Yongsheng Chen ^{[2
,3
]}

机构：

[1] School of Chemistry & Material Science, Langfang Teachers University

[2] Institute of Polymer Chemistry, College of Chemistry, Nankai University

[3] Key Laboratory of Functional Polymer Materials and Center for Nanoscale Science and Technology

来源：

Science China(Chemistry) | 2016年 / 02期

基金：

中国国家自然科学基金;

关键词：

graphene; bulk sp~2 carbon materials; supercapacitor; specific surface area; DFT modeling;

D O I：

暂无

中图分类号：

TQ127.11 [];

学科分类号：

0817 ;

摘要：

The possible practical limits for the specific surface area and capacitance performance of bulk sp~2 carbon materials were investigated experimentally and theoretically using a variety of carbon materials. We find the limit for the specific surface area to be 3500–3700 m~2 g, and based on this, the corresponding best capacitance was predicted for various electrolyte systems. A model using an effective ionic diameter for the electrolyte ions was proposed and used to calculate the theoretical capacitance. A linear dependence of experimental capacitance versus effective specific surface area of various sp~2 carbon materials was obtained for all studied ionic liquid, organic and aqueous electrolyte systems. Furthermore, excellent agreement between the theoretical and experimental capacitance was observed for all the tested sp~2 carbon materials in these electrolyte systems, indicating that this model can be applied widely in the evaluation of various carbon materials for supercapacitors.

引用

页码：225 / 230

页数：6

共 8 条

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