Electrochemical performance of LiNi0.5Mn1.5O4 synthesised via ball-milling for Li-ion batteries

Electrochemical performance of LiNi0.5Mn1.5O4 synthesised via ball-milling for Li-ion batteries LiNi Mn O powder was successfully synthesised via ball-milling, followed by calcination at temperatures of 750, 850 and 0.5 1.5 4 950 °C. The physical and electrochemical properties of LiNi Mn O powder were characterised by X-ray diffraction, scanning 0.5 1.5 4 electron microscopy, transmission electron microscopy and galvanostatic charge/discharge. At a 1 C rate, LiNi Mn O 0.5 1.5 4 −1 −1 annealed at 750 °C displays the highest discharge capacity of 81 mAh g at the first cycle and 86 mAh g after 100 cycles. The smaller particle size presented by this LiNi Mn O markedly enhances the rate capability by allowing sufficient contact 0.5 1.5 4 between the active material and the electrolyte, which is beneficial for maximum diffusion and transportation of the lithium ion in the electrode. . . . . Keywords Lithium-ion batteries LiNi Mn O Ball-milling Discharge capacity Rate capability 0.5 1.5 4 −1 Introduction reversible capacity (~ 130 mAh g ) and high energy den- −1 sity(~650Whkg )comparedwithcommercialLiCoO −1 −1 Developing a new cathode material with high energy density is (518 Wh kg )and LiMn O (~400Whkg )[10, 11]. 2 4 a challenge for researchers in order to replace the current cath- http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ionics Springer Journals

Electrochemical performance of LiNi0.5Mn1.5O4 synthesised via ball-milling for Li-ion batteries

Ionics , Volume OnlineFirst – May 30, 2018
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Publisher
Springer Berlin Heidelberg
Copyright
Copyright © 2018 by Springer-Verlag GmbH Germany, part of Springer Nature
Subject
Chemistry; Electrochemistry; Renewable and Green Energy; Optical and Electronic Materials; Condensed Matter Physics; Energy Storage
ISSN
0947-7047
eISSN
1862-0760
D.O.I.
10.1007/s11581-018-2604-5
Publisher site
See Article on Publisher Site

Abstract

LiNi Mn O powder was successfully synthesised via ball-milling, followed by calcination at temperatures of 750, 850 and 0.5 1.5 4 950 °C. The physical and electrochemical properties of LiNi Mn O powder were characterised by X-ray diffraction, scanning 0.5 1.5 4 electron microscopy, transmission electron microscopy and galvanostatic charge/discharge. At a 1 C rate, LiNi Mn O 0.5 1.5 4 −1 −1 annealed at 750 °C displays the highest discharge capacity of 81 mAh g at the first cycle and 86 mAh g after 100 cycles. The smaller particle size presented by this LiNi Mn O markedly enhances the rate capability by allowing sufficient contact 0.5 1.5 4 between the active material and the electrolyte, which is beneficial for maximum diffusion and transportation of the lithium ion in the electrode. . . . . Keywords Lithium-ion batteries LiNi Mn O Ball-milling Discharge capacity Rate capability 0.5 1.5 4 −1 Introduction reversible capacity (~ 130 mAh g ) and high energy den- −1 sity(~650Whkg )comparedwithcommercialLiCoO −1 −1 Developing a new cathode material with high energy density is (518 Wh kg )and LiMn O (~400Whkg )[10, 11]. 2 4 a challenge for researchers in order to replace the current cath-

Journal

IonicsSpringer Journals

Published: May 30, 2018

References

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