Nanocomposites and nanomaterials

Influence of "pompom" graphene additive 
on characteristics of graphite electrodes for LIBs 

Dubinevycha S. 1, Zinin V. 1, Potapenko A.V. 2,3, Potapenko O.V.2,3
1 LLC "MaxAh” K, Kiev, 01001, Ukraine
2 Joint Department of Electrochemical Energy Systems NAS of Ukraine 
E-mail: 1978hiking@gmail.com
3 Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, P.R. China

   Graphene is a new generation material that finds potential and practical application in a variety of research areas. It has unsurpassed characteristics in terms of electronic conductivity and thermal conductivity, mechanical strength and large surface area, and its special structural and morphological characteristics have great prospects for use in energy storage devices and supercapacitors [1-2].
  The use of "pompom" graphene developed by LLC MaxAh, Ukraine opens up possibility for improving the characteristics of materials for both existing LIBs and new systems being developed, such as "lithium-sulfur". Small additions of "pompom" graphene to graphite electrodes can significantly increase the electronic conductivity of the material, which in turn affects the increase in current loads in the battery. And the special morphology of “pompom” graphene, from our point of view, will make it possible to obtain outstanding characteristics of electrodes in terms of life cycle stability. Primary results obtained upon cycling of natural graphite (grade GAK - 1; 99.5%) with the addition of graphene show stable cycling of electrodes with a realized specific capacity of 307 mAh/g at the charge/discharge current density of 0.25C. The TEM image of "pompom" graphene particles and the characteristics of its specific surface, obtained using BET method, are presented below.

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