skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Part I: Electronic and ionic transport properties of the ordered and disordered LiNi 0.5 Mn 1.5 O 4 spinel cathode

Authors:
; ORCiD logo
Publication Date:
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1416197
Grant/Contract Number:
AC02-05CH11231; 6920899
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Journal of Power Sources
Additional Journal Information:
Journal Volume: 348; Journal Issue: C; Related Information: CHORUS Timestamp: 2018-01-09 02:46:59; Journal ID: ISSN 0378-7753
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English

Citation Formats

Amin, Ruhul, and Belharouk, Ilias. Part I: Electronic and ionic transport properties of the ordered and disordered LiNi 0.5 Mn 1.5 O 4 spinel cathode. Netherlands: N. p., 2017. Web. doi:10.1016/j.jpowsour.2017.02.071.
Amin, Ruhul, & Belharouk, Ilias. Part I: Electronic and ionic transport properties of the ordered and disordered LiNi 0.5 Mn 1.5 O 4 spinel cathode. Netherlands. doi:10.1016/j.jpowsour.2017.02.071.
Amin, Ruhul, and Belharouk, Ilias. Sat . "Part I: Electronic and ionic transport properties of the ordered and disordered LiNi 0.5 Mn 1.5 O 4 spinel cathode". Netherlands. doi:10.1016/j.jpowsour.2017.02.071.
@article{osti_1416197,
title = {Part I: Electronic and ionic transport properties of the ordered and disordered LiNi 0.5 Mn 1.5 O 4 spinel cathode},
author = {Amin, Ruhul and Belharouk, Ilias},
abstractNote = {},
doi = {10.1016/j.jpowsour.2017.02.071},
journal = {Journal of Power Sources},
number = C,
volume = 348,
place = {Netherlands},
year = {Sat Apr 01 00:00:00 EDT 2017},
month = {Sat Apr 01 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.jpowsour.2017.02.071

Citation Metrics:
Cited by: 2works
Citation information provided by
Web of Science

Save / Share:
  • LiNi{sub x}Cu{sub 0.5{minus}x}Mn{sub 1.5}O{sub 4} (0 {le} x {le} 0.5) spinel materials that are of interest as electrodes for lithium-ion batteries have been studied by crystallographic and electrochemical methods. Electrochemical results show that the inclusion of Ni into the Cu-modified spinel increases the overall reversible capacity from 72 mAh/g with LiCu{sub 0.5}Mn{sub 1.5}O{sub 4} (x = 0) at 4.95 V to 120 mAh/g with LiNi{sub 0.5}Mn{sub 1.5}O{sub 4} (x = 0.5) at 4.6 V. The Cu-rich spinels in the LiNi{sub x}Cu{sub 0.5{minus}x}Mn{sub 1.5}O{sub 4} system show enhanced stability upon cycling. These spinel products are difficult to prepare in single-phase form.more » Neutron diffraction data show that the end members LiNi{sub 0.5}Mn{sub 1.5}O{sub 4} was determined from a combined X-ray and neutron diffraction profile refinement to be Li{sub 0.97}Ni{sub 0.42}Mn{sub 1.61}O{sub 4}.« less
  • Application of high-voltage spinel LiNi 0.5Mn 1.5O4 cathode material is the closest and the most realistic approach to meeting the midterm goal of lithium-ion batteries for electric vehicles (EVs) and plug-in hybrid electric vehicles (HEVs). However, this application has been hampered by long-standing issues, such as capacity degradation and poor first-cycle Coulombic efficiency of LiNi 0.5Mn 1.5O4 cathode material. Although it is well-known that the structure of LiNi 0.5Mn 1.5O4 into which Li ions are reversibly intercalated plays a critical role in the above issues, performance degradation related to structural changes, particularly in the first cycle, are not fully understood.more » Here, we report detailed investigations of local atomic-level and average structure of LiNi 0.5Mn 1.5O4 during first cycle (3.5–4.9 V) at room temperature. We observed two types of local atomic-level migration of transition metals (TM) ions in the cathode of a well-prepared LiNi 0.5Mn 1.5O4//Li half-cell during first charge via an aberration-corrected scanning transmission electron microscopy (STEM). Surface regions (~2 nm) of the cycled LiNi 0.5Mn 1.5O4 particles show migration of TM ions into tetrahedral Li sites to form a Mn 3O 4-like structure. However, subsurface regions of the cycled particles exhibit migration of TM ions into empty octahedral sites to form a rocksalt-like structure. The migration of these TM ions are closely related to dissolution of Ni/Mn ions and building-up of charge transfer impedance, which contribute significantly to the capacity degradation and the poor first-cycle Coulombic efficiency of spinel LiNi 0.5Mn 1.5O4 cathode material. Accordingly, we provide suggestions of effective stabilization of LiNi 0.5Mn 1.5O4 structure to obtain better electrochemical performance.« less
  • Cited by 8