Thumbnail
Access Restriction
Open

Author Agnihotri, Shruti ♦ Rattan, Sangeeta ♦ Sharma, A. L.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword NANOSCIENCE AND NANOTECHNOLOGY ♦ CAPACITY ♦ CARBON NANOTUBES ♦ CATHODES ♦ DIFFUSION ♦ DOPED MATERIALS ♦ ELECTRIC CONDUCTIVITY ♦ ELECTROCHEMISTRY ♦ ENERGY STORAGE ♦ FIELD EMISSION ♦ IMPEDANCE ♦ IRON COMPOUNDS ♦ LITHIUM COMPOUNDS ♦ LITHIUM IONS ♦ MANGANESE COMPOUNDS ♦ PARTICLE SIZE ♦ SCANNING ELECTRON MICROSCOPY ♦ SILICATES ♦ SILICON OXIDES ♦ SOL-GEL PROCESS ♦ SPECTROSCOPY
Abstract The electrode material Li{sub 2}MnFeSiO{sub 4} was successfully synthesized by standard sol–gel method and further modified with multiwalled carbon nano tube (MWCNT) to achieve better electrochemical properties. Our strategy helps us to improve the performance and storage capacity as compared with the bared material. This novel composite structure constructs an efficient cation (Li{sup +}) and electron channel which significantly enhance the Li{sup +} ion diffusion coefficient and reduced charge transfer resistance. Hence leads to high conductivity and specific capacity. Characterization technique like Field emission scanning electron microscopy (FESEM) has been used to confirm its morphology, structure and particle size which comes out to be of the order of ∼20 to 30 nm. Lesser particle size reveals better electrochemical properties. Electrical conductivity (∼10{sup −5} Scm{sup −1}) of MWCNT doped oxide cathode materials was recorded using ac impedance spectroscopy technique which reflects tenfold increment when compared with pure oxide cathode materials. Cyclic voltametery analysis has been done to calculate specific capacity and potential window of materials with and without CNTs. The results obtained from different techniques are well correlated and suitable for energy storage applications.
ISSN 0094243X
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-05-06
Publisher Place United States
Volume Number 1728
Issue Number 1


Open content in new tab

   Open content in new tab