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Title: Low-Temperature Synthesis, Structural Characterization, and Electrochemistry of Ni-Rich Spinel-like LiNi 2–y Mn y O 4 (0.4 ≤ y ≤ 1)

Abstract

The thermal conversion of chemically delithiated layered Li0.5Ni1-yMnyO2 (0.2 ≤ y ≤ 0.5) into spinel-like LiNi2-yMnyO4 (0.4 ≤ y ≤ 1) has been systematically investigated. The formed spinel-like phases are metastable and cannot be accessed by a conventional high-temperature solid-state method. The layered-to-spinel transformation mechanism has been studied by the Rietveld refinement of in situ neutron diffraction as a function of temperature (25–300 °C). In particular, the ionic diffusion of Li and M ions is quantified at different temperatures. Electrochemistry of the metastable spinel-like phases obtained has been studied in lithium-ion cells. A bond valence sum map has been performed to understand the ionic diffusion of lithium ions in the Ni-rich layered, spinel, and rock-salt structures. The study can aid the understanding of the possible phases that could be formed during the cycling of Ni-rich layered oxide cathodes.

Authors:
 [1];  [2];  [1]
  1. Univ. of Texas, Austin, TX (United States). Materials Science and Engineering Program
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
National Science Foundation (NSF); OTHER
OSTI Identifier:
1235475
Resource Type:
Journal Article
Journal Name:
Chemistry of Materials
Additional Journal Information:
Journal Volume: 27; Journal Issue: 22; Journal ID: ISSN 0897-4756
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE

Citation Formats

Kan, Wang Hay, Huq, Ashfia, and Manthiram, Arumugam. Low-Temperature Synthesis, Structural Characterization, and Electrochemistry of Ni-Rich Spinel-like LiNi 2–y Mn y O 4 (0.4 ≤ y ≤ 1). United States: N. p., 2015. Web. doi:10.1021/acs.chemmater.5b03360.
Kan, Wang Hay, Huq, Ashfia, & Manthiram, Arumugam. Low-Temperature Synthesis, Structural Characterization, and Electrochemistry of Ni-Rich Spinel-like LiNi 2–y Mn y O 4 (0.4 ≤ y ≤ 1). United States. https://doi.org/10.1021/acs.chemmater.5b03360
Kan, Wang Hay, Huq, Ashfia, and Manthiram, Arumugam. 2015. "Low-Temperature Synthesis, Structural Characterization, and Electrochemistry of Ni-Rich Spinel-like LiNi 2–y Mn y O 4 (0.4 ≤ y ≤ 1)". United States. https://doi.org/10.1021/acs.chemmater.5b03360.
@article{osti_1235475,
title = {Low-Temperature Synthesis, Structural Characterization, and Electrochemistry of Ni-Rich Spinel-like LiNi 2–y Mn y O 4 (0.4 ≤ y ≤ 1)},
author = {Kan, Wang Hay and Huq, Ashfia and Manthiram, Arumugam},
abstractNote = {The thermal conversion of chemically delithiated layered Li0.5Ni1-yMnyO2 (0.2 ≤ y ≤ 0.5) into spinel-like LiNi2-yMnyO4 (0.4 ≤ y ≤ 1) has been systematically investigated. The formed spinel-like phases are metastable and cannot be accessed by a conventional high-temperature solid-state method. The layered-to-spinel transformation mechanism has been studied by the Rietveld refinement of in situ neutron diffraction as a function of temperature (25–300 °C). In particular, the ionic diffusion of Li and M ions is quantified at different temperatures. Electrochemistry of the metastable spinel-like phases obtained has been studied in lithium-ion cells. A bond valence sum map has been performed to understand the ionic diffusion of lithium ions in the Ni-rich layered, spinel, and rock-salt structures. The study can aid the understanding of the possible phases that could be formed during the cycling of Ni-rich layered oxide cathodes.},
doi = {10.1021/acs.chemmater.5b03360},
url = {https://www.osti.gov/biblio/1235475}, journal = {Chemistry of Materials},
issn = {0897-4756},
number = 22,
volume = 27,
place = {United States},
year = {Tue Nov 24 00:00:00 EST 2015},
month = {Tue Nov 24 00:00:00 EST 2015}
}

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Works referencing / citing this record:

Critical Role of pH Evolution of Electrolyte in the Reaction Mechanism for Rechargeable Zinc Batteries
journal, September 2016


A reflection on lithium-ion battery cathode chemistry
journal, March 2020