A novel cobalt–carbon composite for the electrochemical supercapacitor electrode material

Autor:	Jiang Jiaqiang, Fuxiang Wei, Y. W. Sui, Genxi Yu
Rok vydání:	2015
Předmět:	Supercapacitor Materials science Mechanical Engineering Composite number chemistry.chemical_element Nanoparticle Condensed Matter Physics Electrochemistry Capacitance chemistry Mechanics of Materials General Materials Science Composite material Cyclic voltammetry Cobalt Carbon
Zdroj:	Materials Letters. 146:20-22
ISSN:	0167-577X
DOI:	10.1016/j.matlet.2015.01.143
Popis:	Metallic cobalt/carbon composites were synthesized by metal-organic framework as precursor via a facile method in the paper. The obtained cobalt nanoparticles are 5–10 nm in size and anchor on carbon homogeneously. The results indicate that metallic cobalt particles have excellent dispersion feature on the surface of carbon. The electrochemical performance of metallic cobalt/carbon composites was characterized by Cyclic voltammetry (CV) and galvanostatic charge/discharge tests. The specific capacitance of the composite material is up to 144.5 F g −1 at current density of 0.5 A g −1 with a capacitance retention rate of 96.5% at current density of 2 A g −1 . The results suggest that synergistic performance can be achieved by combining metallic cobalt and carbon, which inherits the overall system with enhanced electrochemical performance.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::456f57072dc05c5675ddeb2811d31e12 https://doi.org/10.1016/j.matlet.2015.01.143 Zobrazit plný text záznamu Full Text from ScienceDirect