alexa Unravelling The Failure Mechanisms Of High-voltage Composite Oxides For High-energy-density Lithiumion Batteries
ISSN: 2169-0022

Journal of Material Sciences & Engineering
Open Access

OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations

700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

Share This Page

Additional Info

Loading Please wait..

3rd International Conference and Exhibition on Materials Science & Engineering
October 06-08, 2014 Hilton San Antonio Airport, USA

Debasish Mohanty, Jianlin Li, David Wood and Claus Daniel
ScientificTracks Abstracts: J Material Sci Eng
DOI: 10.4172/2169-0022.S1.014
As power requirements in all-electric vehicles (EVs) become more demanding, lithium ion battery (LIB) technology is expected to provide higher energy density. Implementation of high capacity and high-voltage electrodes would enhance the energy density of current LIBs. Layered lithium-manganese rich composite oxides (LMR) are identified as promising cathodes in high-energy density LIBs for EVs because of their ability to deliver high capacity (~240 mAh/g) and can be operated at high operating voltage (~4.7 V). However, practical usage of these electrodes are not feasible because of, i) first cycle irreversible capacity loss during high-voltage charging, ii) impedance rise during high-voltage hold, and iii) voltage fade after subsequent cycle which are mainly caused by structural degradation in the host LMR oxide. This presentation will focus on the findings to rationalize the structural degradation pathways in high-voltage LMR oxides by utilizing ORNL?s state-ofthe- art advanced materials diagnostic to unravel the i) oxygen release process during high-voltage charging, ii) lithium/nickel crystallographic site interchange during high-voltage hold, and iii) cation migration after subsequent cycling causing phase transformation.
Debasish Mohanty has obtained his PhD in Chemistry from University of New Orleans, USA, and currently, he is a postdoctoral research associate in Materials Science Technology Division at Oak Ridge National Laboratory. His current research is focused on understanding the structure and structural degradation mechanism(s) in lithium-ion battery electrodes by applying materials diagnostic techniques and non-destructive quality control (QC) evaluation of lithium-ion battery electrodes. He has extensive experience in oxide (nano) materials synthesis and characterizing the oxide cathode materials by x-ray and neutron diffraction, magnetic susceptibility measurements, microscopy techniques.
image PDF   |   image HTML

Relevant Topics

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version