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Volume 8
Journal of Fundamentals of Renewable Energy and Applications
ISSN: 2090-4541
Battery Tech 2018
September 10-11, 2018
September 10-11, 2018 | London, UK
3
rd
International Conference on
Battery and Fuel Cell Technology
Defect and interface induced Li/Na-ion storage in nano-engineered electrodes
Vinodkumar Etacheri
IMDEA Materials Institute, Spain
D
evelopment of rechargeable batteries with high performance and safety is one of the key challenges faced by modern
electrochemistry. Rechargeable Li-ion batteries attracted significant attention during the last two decades due to their
widespread application in portable electronics, medical implants, grid-level energy storage and electric vehicles. Recently,
secondary Na-ion batteries emerged as an alternative candidate for large scale energy storage. Low-cost and abundance of
resources are main advantages of this technology. Li-O
2
batteries are another high-performance battery system, which has
several fold energy densities compared to the conventional Li-ion batteries. Despite of the several advantages of Li and Na-
ion based batteries, their energy and power densities are not sufficient for more energy demanding commercial applications
such as long-range driving. Consequently, development of high-performance electrode materials is necessary to improve the
energy and power density of these secondary battery systems. Nanostructured transition metal oxide based electrodes are
fabricated to mitigate the drawbacks of electrodes used in conventional Li and Na-ion batteries. Main focus of this work is
the interface and defect engineering to boost pseudocapacitive type Li/Na ion storage. Solution based bottom-up synthetic
approach and carbothermal reduction method are used for the synthesis of defect and interface engineered electrode materials.
Lithium and sodium ion batteries containing defect engineered 1D, 2D and 3D electrodes demonstrated specific capacities
up to 1300 mAh/g and high rate performance up to 30 A/g current density. Spectroscopic, microscopic and electrochemical
studies proved conventional conversion reaction and pseudocapacitive Li/Na ion storage. High specific capacity (5000 mAh/g)
and stable cycling are observed in the case of Li-O
2
batteries. Enhanced electrochemical performances are attributed to the
synergy between pseudocapacitive and conversion-type charge storage mechanism.
Figure 1:
Schematic of the application of defect and interface engineered electrodes in Li-ion, Na-ion, Li-O
2
and Li-Na hybrid batteries.
Recent Publications
1. Etacheri V, Hong CN, Tang J and Pol VG (2018) Cobalt nanoparticles chemically bonded to carbon nanosheets: A stable
anode for fast-charging Li-ion batteries. ACS Applied Mater Interfaces 10:4652-4661.
2. Hong S M, Etacheri V, Hong C N, Choi S W, Lee K B and Pol V G (2017) Enhanced lithium and sodium ion storage in
an interconnected carbon network comprising electronegative fluorine ACS Applied Mater Interfaces 9:18790-18798.
3. Henzie J, Etacheri V, Jahan M, Hong C N, Rong H and Pol V G (2017) Biomineralization inspired crystallization of
monodisperse Mn2O3 octahedra and assembly of high-capacity lithium-ion battery anodes. Journal of Materials
Chemistry A 5:6079-6089.
4. Etacheri V, Seisenbaeva G A, Caruthers J, Daniel G, Nedelec J M, Kessler V G and Pol V G (2015) Ordered network of
interconnected SnO2 nanoparticles for excellent lithium-ion storage. Advanced Energy Materials 5:1401289.
5. Etacheri V, Yourey J E and Bartlett B M (2014) Chemically bonded TiO2 bronze nanosheet/ reduced graphene oxide
hybrid for high-power lithium-ion batteries. ACS Nano 8:1491-1499.
Vinodkumar Etacheri, J Fundam Renewable Energy Appl 2018, Volume 8
DOI: 10.4172/2090-4541-C5-062