4.3 Article

The effects of preparation temperature on microstructure and electrochemical performance of calcium carbide-derived carbon

期刊

JOURNAL OF SOLID STATE ELECTROCHEMISTRY
卷 17, 期 9, 页码 2453-2460

出版社

SPRINGER
DOI: 10.1007/s10008-013-2126-z

关键词

Calcium carbide-derived carbons; Microporous; Structure; Supercapacitors; Electrochemical performance

资金

  1. National Natural Science Foundation of China [51272221, 51072173, 21203161]
  2. Specialized Research Fund for the Doctoral Program of Higher Education [20094301110005]
  3. Scientific Research Fund of Hunan Provincial Education [11C1210]

向作者/读者索取更多资源

Calcium carbide-derived carbons (CCDCs) produced by chlorination of CaC2 at various temperatures (400-800 A degrees C) possess highly controllable microstructure and porosity, allowing them to serve as excellent electrode materials for the application of supercapacitor. This paper focused on the effect of pore size and specific surface area (SSA) of CCDC on its electrochemical behavior. Microstructure and micropore characteristics of CCDC were characterized by N-2 adsorption/desorption isotherms, X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results showed that SSA and average pore size increased with the increase of synthesis temperature from 400 A degrees C to 600 A degrees C, and then decreased when temperature reached to 800 A degrees C. Meanwhile, a correlation between specific capacitance and SSA of micropores (less than 2 nm in diameter) has been studied. It has been found that the supercapacitor using the CCDC prepared at 600 A degrees C as electrode material in 6 M KOH showed the maximum specific capacitance and energy density (53.61 F g(-1) and 7.08 W h kg(-1)), outstanding rate capability, lower IR drop and 96 % retention of initial capacity over 5,000 cycles.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.3
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据