Mg Substitution Clarifies the Reaction Mechanism of Olivine LiFePO4. Issue 7 (12th December 2014)
- Record Type:
- Journal Article
- Title:
- Mg Substitution Clarifies the Reaction Mechanism of Olivine LiFePO4. Issue 7 (12th December 2014)
- Main Title:
- Mg Substitution Clarifies the Reaction Mechanism of Olivine LiFePO4
- Authors:
- Omenya, Fredrick
Wen, Bohua
Fang, Jin
Zhang, Ruibo
Wang, Qi
Chernova, Natasha A.
Schneider‐Haefner, Joe
Cosandey, Frederic
Whittingham, M. Stanley - Abstract:
- <abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Understanding the reaction mechanism of olivine compounds as electrode materials for lithium lithium‐ion batteries have has received much attention recently. The question whether olivine LiFePO4 undergoes two‐phase or non‐nonequilibrium single‐phase reaction during electrochemical processes has taken center stage in the understanding of the faster reaction kinetics observed in this material. Here, the lithiation/delithiation mechanism of Mg Mg‐substituted LiFePO4 using high high‐resolution X‐ray diffraction(XRD), transmission electron microscopy(TEM), and electrochemical measurements is reported. Ex situ partially (de)lithiated olivine‐ LiMg0.2Fe0.8PO4 show the existence of stable equilibrium intermediate phases as characterized by the presence of more than two phases and broadness of diffraction peaks. Electron energy loss spectroscopy profiles across individual nanoparticles further confirm uniform lithiation with a constant Fe–L3 energy measured across each nanoparticle, suggestive of solid solution behavior in individual particles. In addition, a continuous shift in the diffraction peak position is observed even in the "two‐phase" region in the ex situ electrochemical (de)lithiated electrodes.</p> </abstract>
- Is Part Of:
- Advanced energy materials. Volume 5:Issue 7(2015:Apr.)
- Journal:
- Advanced energy materials
- Issue:
- Volume 5:Issue 7(2015:Apr.)
- Issue Display:
- Volume 5, Issue 7 (2015)
- Year:
- 2015
- Volume:
- 5
- Issue:
- 7
- Issue Sort Value:
- 2015-0005-0007-0000
- Page Start:
- n/a
- Page End:
- n/a
- Publication Date:
- 2014-12-12
- Subjects:
- Energy harvesting -- Materials -- Periodicals
Energy conversion -- Materials -- Periodicals
Energy storage -- Materials -- Periodicals
Photovoltaics -- Periodicals
Fuel cells -- Periodicals
Thermoelectric materials -- Periodicals
621.31 - Journal URLs:
- http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1614-6840/ ↗
http://onlinelibrary.wiley.com/ ↗ - DOI:
- 10.1002/aenm.201401204 ↗
- Languages:
- English
- ISSNs:
- 1614-6832
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 0696.850700
British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 3149.xml