Graphene/Na carboxymethyl cellulose composite for Li-ion batteriesprepared by enhanced liquid exfoliationOlga

Download
  1. Available on April 24, 2017
  2. Get@NRC: Graphene/Na carboxymethyl cellulose composite for Li-ion batteriesprepared by enhanced liquid exfoliationOlga (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1016/j.mseb.2016.04.003
AuthorSearch for: ; Search for: ; Search for:
TypeArticle
Journal titleMaterials Science and Engineering B
ISSN0921-5107
Article numberMSB-13860
AbstractIn the present work, we report a sonication-assisted exfoliation method of graphene preparationenhanced by the use of microwave heating and “green” exfoliant – sodium carboxymethyl cellulose(NaCMC). Introducing microwave heating during sonication of graphite dispersions in aqueous solutionsof NaCMC results in the formation of graphene dispersions with concentration as high as 4.29 mg/ml. It isfound that drying the dispersions results in the formation of graphene/NaCMC composites with graphenecontent up to 38.65 wt%. A study of the composite with High Resolution Transmission Electron Microscopyand Raman Spectroscopy reveals the formation of few-layer graphene approximately below five layers.The as-prepared graphene/NaCMC composite shows higher capacities than commercial graphite in Li-ionhalf cells reaching 397 mAh/g(graphene). Also, when the composite is used with a nanosilicon (33 wt%) in aLi-ion half cell high initial reversible capacities of 1611 mAh/g(Si)with good cyclability and rate capabilityhave been reached.
Publication date
PublisherElsevier
LanguageEnglish
AffiliationEnergy, Mining and Environment; Automotive and Surface Transportation; National Research Council Canada
Peer reviewedYes
NPARC number23000213
Export citationExport as RIS
Report a correctionReport a correction
Record identifier53b49153-7e23-4e60-9847-41177eef882f
Record created2016-06-21
Record modified2016-06-21
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)