mirage

Carbon-coated nanophase CaMoO4 as anode material for Li ion batteries.

DSpace/Manakin Repository

 

Search DR-NTU


Advanced Search Subject Search

Browse

My Account

Carbon-coated nanophase CaMoO4 as anode material for Li ion batteries.

Show simple item record

dc.contributor.author Sharma, N.
dc.contributor.author Shaju, K. M.
dc.contributor.author Rao, G. V. Subba.
dc.contributor.author Chowdari, Bobba V. R.
dc.contributor.author Dong, Zhili.
dc.contributor.author White, Timothy John.
dc.date.accessioned 2012-01-06T03:51:08Z
dc.date.available 2012-01-06T03:51:08Z
dc.date.copyright 2004
dc.date.issued 2012-01-06
dc.identifier.citation Sharma, N., Shaju, K. M., Rao, G. V. S., Chowdari, B. V. R., Dong, Z. L., & White, T. J. (2004). Carbon-Coated Nanophase CaMoO4 as Anode Material for Li Ion Batteries, Chemistry of Materials, 16(3), 504-512.
dc.identifier.uri http://hdl.handle.net/10220/7447
dc.description.abstract Pure and carbon (C)-coated CaMoO4 were synthesized by solution precipitation and solgel methods, and their electrochemical properties were studied vs Li by galvanostatic cycling and cyclic voltammetry (CV). Combined X-ray diffraction, SEM, and TEM results revealed the formation of nanocrystalline particles with the scheelite structure, the morphology being a function of the synthetic procedure. TEM of 10% C-coated CaMoO4 shows the amorphous nature of carbon on the crystalline particles with a thickness of 8-12 nm. Galvanostatic data in the voltage range of 0.005-2.5 V up to 50 cycles at a rate of 60 mA/g revealed that the 10% C-coated CaMoO4 gave the highest reversible capacities. At the 20th discharge cycle, the capacity values (mA h/g) are as follows: solution precipitated, 190; sol-gel, 268; 5% C-coated, 401; and 10% C-coated, 508. The latter value corresponds to 3.8 mol of recyclable Li. The improvement in the interparticle electronic conductivity imparted by the C-coating led to superior performance. The Coulombic efficiency for all the compositions is >98%. Galvanostatic cycling results are supplemented by the CV data. A plausible mechanism for charge-discharge cycling has been proposed.
dc.language.iso en
dc.relation.ispartofseries Chemistry of materials
dc.rights © 2004 American Chemical Society.
dc.subject DRNTU::Engineering::Materials::Nanostructured materials.
dc.title Carbon-coated nanophase CaMoO4 as anode material for Li ion batteries.
dc.type Journal Article
dc.contributor.school School of Materials Science and Engineering
dc.identifier.doi http://dx.doi.org/10.1021/cm0348287

Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record