Electrochemical study of activated carbon-semiconducting oxide composites as electrode materials of double-layer capacitors

Autor:	Zhenghua Deng, Rengui Li, Fang Chen, Haichao Liang, Lu Wang
Rok vydání:	2004
Předmět:	Electrolytic capacitor Supercapacitor Materials science General Chemical Engineering Composite number Oxide Electrochemistry Capacitance Titanium oxide chemistry.chemical_compound chemistry medicine Composite material Activated carbon medicine.drug
Zdroj:	Electrochimica Acta. 49:3463-3467
ISSN:	0013-4686
DOI:	10.1016/j.electacta.2004.03.016
Popis:	The energy storage of activated carbon modified with a semiconducting oxide TiO2 is studied. The composite was prepared by mixing nanosize TiO2 and activated carbon through a means of ultrasonic vibration in ethanol solution for 30 min. It was found that with modification of TiO2, the specific capacitance of activated carbon measured at 0.65 mA/cm2 was increased from 47.2 to 63.1 F g−1. This method is unique in comparison the conventional method because it uses semiconducting TiO2 other than electrochemically active materials such as RuO2. The later has been adopted to make electrochemical-double-layer hybrid supercapacitors, however, the former is attributed to a pure double-layer supercapacitor.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::76603670757939f608dea7953abaae76 https://doi.org/10.1016/j.electacta.2004.03.016 Zobrazit plný text záznamu Full Text from ScienceDirect