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Title: Structural Underpinnings of the Enhanced Cycling Stability upon Al-Substitution in LiNi 0.45Mn 0.45Co 0.1-yAl yO 2 Positive Electrode Materials for Li-ion Batteries

Abstract

Single-phase LiNi 0.45Mn 0.45Co 0.1-yAl yO 2 layered oxide materials with 0 ≤ y ≤ 0.10 were prepared using the glycine-nitrate combustion method. Al-substitution has a minimal effect on the defect concentration and rate capability of the materials, but raises the operating voltage and reduces the capacity fade of the materials during prolonged cycling compared to the unsubstituted system. In situ X-ray diffraction suggests the presence of Al has a significant structural impact during battery operation. It acts to limit the changes in lattice parameters observed during electrochemical charging and cycling of the materials. High-resolution X-ray diffraction reveals structural distortions in the transition metal layers of as-synthesized powders with high Al-contents, as well as a structural evolution seen in all materials after cycling.

Authors:
; ; ;  [1];  [2]
  1. UCB
  2. (
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
DOE - OTHER
OSTI Identifier:
1050753
Resource Type:
Journal Article
Journal Name:
Chemistry of Materials
Additional Journal Information:
Journal Volume: 24; Journal Issue: (17) ; 09, 2012; Journal ID: ISSN 0897-4756
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE; ALUMINIUM; ALUMINIUM OXIDES; CAPACITY; COBALT OXIDES; COMBUSTION; DEFECTS; ELECTRIC POTENTIAL; ELECTROCHEMISTRY; ELECTRODES; ELECTRIC BATTERIES; LATTICE PARAMETERS; LAYERS; LITHIUM IONS; LITHIUM OXIDES; MANGANESE OXIDES; MATERIALS; NICKEL OXIDES; OPERATION; OXIDES; POWDERS; STABILITY; TRANSITION ELEMENTS; X-RAY DIFFRACTION

Citation Formats

Conry, Thomas E, Mehta, Apurva, Cabana, Jordi, Doeff, Marca M, and SSRL). Structural Underpinnings of the Enhanced Cycling Stability upon Al-Substitution in LiNi0.45Mn0.45Co0.1-yAlyO2 Positive Electrode Materials for Li-ion Batteries. United States: N. p., 2012. Web. doi:10.1021/cm3011937.
Conry, Thomas E, Mehta, Apurva, Cabana, Jordi, Doeff, Marca M, & SSRL). Structural Underpinnings of the Enhanced Cycling Stability upon Al-Substitution in LiNi0.45Mn0.45Co0.1-yAlyO2 Positive Electrode Materials for Li-ion Batteries. United States. doi:10.1021/cm3011937.
Conry, Thomas E, Mehta, Apurva, Cabana, Jordi, Doeff, Marca M, and SSRL). Tue . "Structural Underpinnings of the Enhanced Cycling Stability upon Al-Substitution in LiNi0.45Mn0.45Co0.1-yAlyO2 Positive Electrode Materials for Li-ion Batteries". United States. doi:10.1021/cm3011937.
@article{osti_1050753,
title = {Structural Underpinnings of the Enhanced Cycling Stability upon Al-Substitution in LiNi0.45Mn0.45Co0.1-yAlyO2 Positive Electrode Materials for Li-ion Batteries},
author = {Conry, Thomas E and Mehta, Apurva and Cabana, Jordi and Doeff, Marca M and SSRL)},
abstractNote = {Single-phase LiNi0.45Mn0.45Co0.1-yAlyO2 layered oxide materials with 0 ≤ y ≤ 0.10 were prepared using the glycine-nitrate combustion method. Al-substitution has a minimal effect on the defect concentration and rate capability of the materials, but raises the operating voltage and reduces the capacity fade of the materials during prolonged cycling compared to the unsubstituted system. In situ X-ray diffraction suggests the presence of Al has a significant structural impact during battery operation. It acts to limit the changes in lattice parameters observed during electrochemical charging and cycling of the materials. High-resolution X-ray diffraction reveals structural distortions in the transition metal layers of as-synthesized powders with high Al-contents, as well as a structural evolution seen in all materials after cycling.},
doi = {10.1021/cm3011937},
journal = {Chemistry of Materials},
issn = {0897-4756},
number = (17) ; 09, 2012,
volume = 24,
place = {United States},
year = {2012},
month = {10}
}