期刊
JOURNAL OF POWER SOURCES
卷 326, 期 -, 页码 702-710出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2016.03.065
关键词
Supercapacitor; Asymmetric device; Hybrid device; Functionalized carbon; Ni(OH)(2); Electrochemical capacitor
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC) [1937]
- Le Ministere du Developpement economique, de l'Innovation et de l'Exportation (MDEIE) from the Quebec government [NMDSE-PSR-SIIRI-361]
- NanoQAM
- CQMF
- French Ministere des Affaires Etrangeres
- Ministere des Relations Internationales du Quebec
Tailoring carbon based negative electrode by grafting electroactive 9,10-phenanthrenequinone molecules on porous carbon drastically improves the performance of a carbon/Ni(OH)(2) hybrid electrochemical capacitor. The grafted-quinone moieties add a Faradaic contribution to the double layer capacitance of carbon leading to a significant increase of the charge stored by the full devices. Good cyclability is ensured due to the strong bond between 9,10-phenanthrenequinone molecules and the carbon surface. More importantly, by increasing the total capacity, the grafting improves the energy density of the full hybrid device while maintaining fast charge/discharge kinetics and thus without affecting the power density. (C) 2016 Elsevier B.V. All rights reserved.
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