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Materials Congress 2018
Page 77
Nano Research & Applications
ISSN: 2471-9838
W o r l d C o n g r e s s o n
Materials Science & Engineering
A u g u s t 2 3 - 2 5 , 2 0 1 8
Am s t e r d a m , N e t h e r l a n d s
H
igh capacity energy storage is a fundamental barrier to widespread, efficient, and cost-effective implementation of renewable
energy resources. Graphite-based energy storage devices, such as lithium-ion batteries (LIBs), are the most reliable energy
storage devices for portable electronics, electric vehicles (EV) and electric grid storage due to their high energy density, high
power density, stability, low cost, and safety. EV technology still faces some key challenges in wide-scale development and
deployment, and it is hampered by a short range and the lack of a grid-charging infrastructure. Battery anode holds the key in
solving both these issues, as a way of storing energy on EVs themselves and on the evolving electricity grid. We present newly
developed 3D graphene structures named incommensurate multilayer graphene (IMLG) that performs exceptional high reversible
capacities up to 1600 mAh/g (430% higher of graphite) applied as an anode in LiBs cells by replacing the commercial graphite.
Our study revealed a new mechanism of lithium intercalation into multilayer graphene structures with the possibility to achieve up
to 1674 mAh/g capacity in finite multilayers. It appears unique physical and electronic properties of incommensurately-stacked/
rotated layers enable full diffusion and reversible intercalation of large amounts of lithium within interlayer spaces. Lithium
actively absorbs/desorbs on both the outer and inner surfaces of incommensurate graphene, providing highly efficient charge
transfer. We also discuss the feasibility of IMLG synthesis technology and our approach to its commercialization as an advanced
anode for next-generation lightweight, flexible and powerful batteries.
T.Paronyan@hexalayer.comBreakthrough in graphene structures for the next
generation energy storages
Tereza M Paronyan
1, 2
1
HeXalayer, LLC, Kentucky, USA
2
Northern Kentucky University, USA
Nano Res Appl 2018, Volume: 4
DOI: 10.21767/2471-9838-C4-018