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Electrochemical activity of alpha-MoO3 nano-belts as lithium-ion battery cathode

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Title Electrochemical activity of alpha-MoO3 nano-belts as lithium-ion battery cathode
 
Creator SEN, UK
MITRA, S
 
Subject HYDROTHERMAL SYNTHESIS
TRANSPORT-PROPERTIES
MOO3 NANOBELTS
AC-IMPEDANCE
PERFORMANCE
LI
MOLYBDENUM
LICOO2
ELECTRODES
 
Description Few metal oxides have seen renewed interest because of their novel reactivity towards Li, leading to a large storage capacity. However, apart from their large capacity gain, it suffers from cycling instability, large polarization loss and poor rate performance. Herein, we report on the structural, morphological and electrochemical properties of alpha-MoO3 nano belts prepared by a simple hydrothermal method and used as a cathode for lithium-ion battery application. During the electrode preparation, we observed that the MoO3 nano-belt composite sample cast on stainless steel (SS) substrate leads to a better electrochemical performance towards Li compared to aluminium (Al) or nickel (Ni) substrates. The reason behind the poor performance was considered here, due to surface passivation on Al substrates. This report comprises experimental results depicting (i) a sustained reversible capacity of 140 mA h g(-1) for over 50 cycles at a rate of 200 mA g(-1), (ii) outstanding rate capabilities with reversible capacities as high as 320 mA h g(-1) at a rate of 50 mA g(-1) and (iii) electrochemical stability of alpha-MoO3 nano belts towards a stainless steel substrate. Being able to make such highly oriented alpha-MoO3 nano belt-based electrodes, through the hydrothermal process and providing the electrochemical results, together show another efficient way to use MoO3 electrodes as a cathode in lithium-ion batteries.
 
Publisher ROYAL SOC CHEMISTRY
 
Date 2014-10-15T08:45:36Z
2014-10-15T08:45:36Z
2012
 
Type Article
 
Identifier RSC ADVANCES, 2(29)11123-11131
http://dx.doi.org/10.1039/c2ra21373g
http://dspace.library.iitb.ac.in/jspui/handle/100/14717
 
Language en