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Title: A study of room-temperature Li xMn 1.5Ni 0.5O 4 solid solutions

Abstract

Understanding the kinetic implication of solid-solution vs. biphasic reaction pathways is critical for the development of advanced intercalation electrode materials. Yet this has been a long-standing challenge in materials science due to the elusive metastable nature of solid solution phases. The present study reports the synthesis, isolation, and characterization of room-temperature Li xMn 1.5Ni 0.5O 4 solid solutions. In situ XRD studies performed on pristine and chemically-delithiated, micron-sized single crystals reveal the thermal behavior of Li xMn 1.5Ni 0.5O 4 (0 ≤ x ≤ 1) cathode material consisting of three cubic phases: LiMn 1.5Ni 0.5O 4 (Phase I), Li 0.5Mn 1.5Ni 0.5O 4 (Phase II) and Mn 1.5Ni 0.5O 4 (Phase III). A phase diagram capturing the structural changes as functions of both temperature and Li content was established. In conclusion, the work not only demonstrates the possibility of synthesizing alternative electrode materials that are metastable in nature, but also enables in-depth evaluation on the physical, electrochemical and kinetic properties of transient intermediate phases and their role in battery electrode performance.

Authors:
 [1];  [1];  [1];  [1]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
1256049
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 5; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Saravanan, Kuppan, Jarry, Angelique, Kostecki, Robert, and Chen, Guoying. A study of room-temperature LixMn1.5Ni0.5O4 solid solutions. United States: N. p., 2015. Web. doi:10.1038/srep08027.
Saravanan, Kuppan, Jarry, Angelique, Kostecki, Robert, & Chen, Guoying. A study of room-temperature LixMn1.5Ni0.5O4 solid solutions. United States. doi:10.1038/srep08027.
Saravanan, Kuppan, Jarry, Angelique, Kostecki, Robert, and Chen, Guoying. Mon . "A study of room-temperature LixMn1.5Ni0.5O4 solid solutions". United States. doi:10.1038/srep08027. https://www.osti.gov/servlets/purl/1256049.
@article{osti_1256049,
title = {A study of room-temperature LixMn1.5Ni0.5O4 solid solutions},
author = {Saravanan, Kuppan and Jarry, Angelique and Kostecki, Robert and Chen, Guoying},
abstractNote = {Understanding the kinetic implication of solid-solution vs. biphasic reaction pathways is critical for the development of advanced intercalation electrode materials. Yet this has been a long-standing challenge in materials science due to the elusive metastable nature of solid solution phases. The present study reports the synthesis, isolation, and characterization of room-temperature LixMn1.5Ni0.5O4 solid solutions. In situ XRD studies performed on pristine and chemically-delithiated, micron-sized single crystals reveal the thermal behavior of LixMn1.5Ni0.5O4 (0 ≤ x ≤ 1) cathode material consisting of three cubic phases: LiMn1.5Ni0.5O4 (Phase I), Li0.5Mn1.5Ni0.5O4 (Phase II) and Mn1.5Ni0.5O4 (Phase III). A phase diagram capturing the structural changes as functions of both temperature and Li content was established. In conclusion, the work not only demonstrates the possibility of synthesizing alternative electrode materials that are metastable in nature, but also enables in-depth evaluation on the physical, electrochemical and kinetic properties of transient intermediate phases and their role in battery electrode performance.},
doi = {10.1038/srep08027},
journal = {Scientific Reports},
number = ,
volume = 5,
place = {United States},
year = {2015},
month = {1}
}

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Cited by: 11 works
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