Cited 0 time in webofscience Cited 0 time in scopus

Novel mesoporous microspheres of Al and Ni doped LMO spinels and their performance as cathodes in secondary lithium ion batteries

Title
Novel mesoporous microspheres of Al and Ni doped LMO spinels and their performance as cathodes in secondary lithium ion batteries
Authors
Mukherjee, SantanuSchuppert, NicholasBates, AlexLee, Sang C.Park, Sam
DGIST Authors
Lee, Sang C.
Issue Date
2017
Citation
International Journal of Green Energy, 14(7), 656-664
Type
Article
Article Type
Article; Article in Press
Keywords
AluminumCathode MaterialsCathodesCellsChallengesConvergence of Numerical MethodsCyclic VoltammetryCytologyElectric BatteriesElectrodesHigh CapacityIonsJahn Teller EffectLattice DeformationLattice DeformationLiLiMn2O4LithiumLithium Ion BatteriesLithium AlloysLithium CompoundsLithium Ion BatteriesLithium Manganese OxideManganeseManganese OxideMesoporous MicrospheresMicrospheresNickelOpen Circuit VoltagePorositySecondary BatteriesSecondary Lithium Ion BatteriesSpecific CapacitiesSpinelsStabilityStabilizing FactorsTemperature
ISSN
1543-5075
Abstract
A facile, scalable, and solution-based technique is used to fabricate Al and Ni-doped (LiAl0.1Mn1.9O4 and LiAl0.1Ni0.1Mn1.8O4) microspheres of lithium manganese oxide (LMO) spinels for use as reversible cathode materials for lithium ion batteries (LIBs). The spheres of the two samples exhibit different porosities. Cells with these LMO-based cathodes are then cycled between 4.5 V and 2 V to study their stabilities while simultaneously being subjected to the undesirable Jahn-Teller distortion that occurs around the ~3 V regime. The LiAl0.1Mn1.9O4 (LAMO) and the LiAl0.1Ni0.1Mn1.8O4 (LANMO) cells exhibit comparable open circuit voltages (OCV) of 2.94 V and 2.97 V, respectively. During cell cycling, the LAMO cell exhibits a maximum specific capacity of 122.51 mAh g−1 with a capacity fade of 65.35% after 75 cycles. The LiAl0.1Ni0.1Mn1.8O4 (LAMO) sample fares better and exhibits a maximum of 140.49 mAh g−1 and a capacity drop of 52.59%. Detailed structural studies indicate that Ni doping and the greater degree of porosity of the LANMO sample to be a stabilizing factor. This is further confirmed by cyclic voltammetry (CV) and AC impedance spectra analysis. © 2017 Taylor & Francis Group, LLC
URI
http://hdl.handle.net/20.500.11750/4259
DOI
10.1080/15435075.2017.1317254
Publisher
Taylor and Francis Inc.
Related Researcher
Files:
There are no files associated with this item.
Collection:
ETC1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE