Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 117, Issue 49, Pages 25877-25883Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp405839z
Keywords
-
Funding
- Korea Institute of Science and Technology (KIST)
- Nano-Convergence Foundation
- Ministry of Science, ICT & Future Planning
- Ministry of Trade, Industry & Energy of Korea [2M32790]
- Exotic Nanocarbons, the Japan Regional Innovation Strategy Program by the Excellence, Japan Science and Technology Agency
- Grants-in-Aid for Scientific Research [25620140, 23350072] Funding Source: KAKEN
- Korea Evaluation Institute of Industrial Technology (KEIT) [R201302110] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Council of Science & Technology (NST), Republic of Korea [2Z03870] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
We investigated the importance of the specific effective surface area through a detailed study on the relationship between electrical conductivity of single-walled carbon nanohorns (SWCNHs) and accessibility of the electrolyte ions in the SWCNH-based supercapacitor. After heat treatment of the SWCNHs, the ratio of sp(2)/sp(3) carbons dramatically increased, suggesting an enhanced electrical conductivity of the SWCNHs. Even though the specific surface area (SSA) slightly decreased by 16% as a result of heat treatment, the specific capacitance per SSA of the SWCNH electrode remarkably increased from 22 to 47 mu F cm(-2). Such a result indicates an explicit increase in accessible effective surface area by electrolyte ions. Our result clearly showed that a higher degree of utilization for the interstitial pore of SWCNHs by solvated ions is a key factor in achieving a high volumetric capacitance of SWCNH-based supercapacitors.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available