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Title: Structural Evolution of LixNiyMnzCo1-y-zO2 Cathode Materials during High-Rate Charge and Discharge

Abstract

Ni-rich lithium transition metal oxides have received significant attention due to their high capacities and rate capabilities determined via theoretical calculations. Although the structural properties of these materials are strongly correlated with the electrochemical performance, their structural stability during the high-rate electrochemical reactions has not been fully evaluated yet. In this work, transmission electron microscopy is used to investigate the crystallographic and electronic structural modifications of Ni-based cathode materials at a high charge/discharge rate of 10 C. It is found that the high-rate electrochemical reactions induce structural inhomogeneity near the surface of Ni-rich cathode materials, which limits Li transport and reduces their capacities. Furthermore, this study establishes a correlation between the high-rate electrochemical performance of the Ni-based materials and their structural evolution, which can provide profound insights for designing novel cathode materials having both high energy and power densities.

Authors:
 [1];  [2]; ORCiD logo [2];  [3];  [4]; ORCiD logo [2]
+ Show Author Affiliations
  1. Korea Institute of Science and Technology (KIST), Seoul (Republic of Korea); Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Korea Institute of Science and Technology (KIST), Seoul (Republic of Korea)
  3. Kyung Hee Univ., Seoul (Republic of Korea)
  4. KIST, Wanju-gun (Republic of Korea)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1409643
Report Number(s):
BNL-114698-2017-JA
Journal ID: ISSN 1948-7185; R&D Project: 16060; 16060; TRN: US1703200
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Physical Chemistry Letters
Additional Journal Information:
Journal Volume: 8; Journal ID: ISSN 1948-7185
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
29 ENERGY PLANNING, POLICY, AND ECONOMY; lithium ion batteries; high rate; cathode; structural evolution; transmission electron microscopy; Center for Functional Nanomaterials

Citation Formats

Hwang, Sooyeon, Jo, Eunmi, Chung, Kyung Yoon, Hwang, Kyo Seon, Kim, Seung Min, and Chang, Wonyoung. Structural Evolution of LixNiyMnzCo1-y-zO2 Cathode Materials during High-Rate Charge and Discharge. United States: N. p., 2017. Web. doi:10.1021/acs.jpclett.7b02579.
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Hwang, Sooyeon, Jo, Eunmi, Chung, Kyung Yoon, Hwang, Kyo Seon, Kim, Seung Min, & Chang, Wonyoung. Structural Evolution of LixNiyMnzCo1-y-zO2 Cathode Materials during High-Rate Charge and Discharge. United States. https://doi.org/10.1021/acs.jpclett.7b02579
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Hwang, Sooyeon, Jo, Eunmi, Chung, Kyung Yoon, Hwang, Kyo Seon, Kim, Seung Min, and Chang, Wonyoung. Wed . "Structural Evolution of LixNiyMnzCo1-y-zO2 Cathode Materials during High-Rate Charge and Discharge". United States. https://doi.org/10.1021/acs.jpclett.7b02579. https://www.osti.gov/servlets/purl/1409643.
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@article{osti_1409643,
title = {Structural Evolution of LixNiyMnzCo1-y-zO2 Cathode Materials during High-Rate Charge and Discharge},
author = {Hwang, Sooyeon and Jo, Eunmi and Chung, Kyung Yoon and Hwang, Kyo Seon and Kim, Seung Min and Chang, Wonyoung},
abstractNote = {Ni-rich lithium transition metal oxides have received significant attention due to their high capacities and rate capabilities determined via theoretical calculations. Although the structural properties of these materials are strongly correlated with the electrochemical performance, their structural stability during the high-rate electrochemical reactions has not been fully evaluated yet. In this work, transmission electron microscopy is used to investigate the crystallographic and electronic structural modifications of Ni-based cathode materials at a high charge/discharge rate of 10 C. It is found that the high-rate electrochemical reactions induce structural inhomogeneity near the surface of Ni-rich cathode materials, which limits Li transport and reduces their capacities. Furthermore, this study establishes a correlation between the high-rate electrochemical performance of the Ni-based materials and their structural evolution, which can provide profound insights for designing novel cathode materials having both high energy and power densities.},
doi = {10.1021/acs.jpclett.7b02579},
journal = {Journal of Physical Chemistry Letters},
number = ,
volume = 8,
place = {United States},
year = {Wed Nov 08 00:00:00 EST 2017},
month = {Wed Nov 08 00:00:00 EST 2017}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1021/acs.jpclett.7b02579
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    Works referencing / citing this record:

    Surface/Interface Structure Degradation of Ni‐Rich Layered Oxide Cathodes toward Lithium‐Ion Batteries: Fundamental Mechanisms and Remedying Strategies
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    • Liang, Longwei; Zhang, Wenheng; Zhao, Fei
    • Advanced Materials Interfaces, Vol. 7, Issue 3
    • DOI: 10.1002/admi.201901749

    Boron-doped single crystal LiNi0.6Mn0.2Co0.2O2 with improved electrochemical performance for lithium-ion batteries
    journal, July 2019

    In‐Depth TEM Investigation on Structural Inhomogeneity within a Primary Li x Ni 0.835 Co 0.15 Al 0.015 O 2 Particle: Origin of Capacity Decay during High‐Rate Discharge
    journal, February 2020

    • Lee, Hyesu; Jo, Eunmi; Chung, Kyung Yoon
    • Angewandte Chemie International Edition, Vol. 59, Issue 6
    • DOI: 10.1002/anie.201910670

    Cooling Induced Surface Reconstruction during Synthesis of High‐Ni Layered Oxides
    journal, October 2019

    • Zhang, Ming‐Jian; Hu, Xiaobing; Li, Maofan
    • Advanced Energy Materials, Vol. 9, Issue 43
    • DOI: 10.1002/aenm.201901915

    Honeycomb-Like Nitrogen-Doped Carbon 3D Nanoweb@Li 2 S Cathode Material for Use in Lithium Sulfur Batteries
    journal, January 2019

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