Journal
JOURNAL OF POWER SOURCES
Volume 298, Issue -, Pages 74-82Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2015.08.047
Keywords
Activated carbon; Supercapacitor; Molten carbonate reactivation
Funding
- National Natural Science Foundation of China [51325102]
- International Science & Technology Cooperation Program of China (ISTCPC) [2015DFA90750]
- Program for Creation Team of Hubei Province [2015CFA017]
Ask authors/readers for more resources
Simple, affordable and green methods to improve capacitive properties of commercial activated carbon (AC) are intriguing since ACs possess a predominant role in the commercial supercapacitor market. Herein, we report a green reactivation of commercial ACs by soaking ACs in molten Na2CO3-K2CO3 (equal in mass ratios) at 850 degrees C combining the merits of both physical and chemical activation strategies. The mechanism of molten carbonate treatment and structure-capacitive activity correlations of the ACs are rationalized. Characterizations show that the molten carbonate treatment increases the electrical conductivity of AC without compromising its porosity and wettability of electrolytes. Electrochemical tests show the treated AC exhibited higher specific capacitance, enhanced high-rate capability and excellent cycle performance, promising its practical application in supercapacitors. The present study confirms that the molten carbonate reactivation is a green and effective method to enhance capacitive properties of ACs. (C) 2015 Elsevier B.V. All rights reserved.
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