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Title: Using in situ and operando methods to characterize phase changes in charged lithium nickel cobalt aluminum oxide cathode materials

Abstract

Lithium ion batteries have been extensively explored in recent decades in order to improve their electrochemical performance, address safety concerns, and reduce costs in larger-scale applications. Electrode materials are key components which govern the properties of the battery at the system level. Cathode materials are of particular importance as they are a limiting factor for achieving high energy density. Lithium nickel cobalt aluminum oxide (LiNi0.8Co0.15Al0.05O2, referred to subsequently as NCA) is one of successful cathode materials since it can deliver higher capacity than other cathode materials such as lithium cobalt oxide or lithium iron phosphate. However, structural instabilities that occur NCA during charging or at high temperatures is believed to be the primary reason for performance degradation as well as a possible safety threat. Furthermore, understanding the structural evolution that occurs in NCA is of importance to acquire fundamental insights for taking full advantage of the high capacity of NCA materials. Beyond static information, in situ and operando characterization approaches allow us to observe structural changes under external stimulus or in a working condition, providing a deeper understanding of the routes by which structure evolve. In this review, we will describe the use of both in situ and operando characterizationmore » performed with both synchrotron X-ray based techniques and advanced electron microscopy, as the combination of these techniques have been shown to be particularly effective at providing structural information at complementary length scales.« less

Authors:
ORCiD logo [1];  [2]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Univ. of Pennsylvania, Philadelphia, PA (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1580237
Report Number(s):
BNL-212466-2019-JAAM
Journal ID: ISSN 0022-3727
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Physics. D, Applied Physics
Additional Journal Information:
Journal Volume: 53; Journal Issue: 11; Journal ID: ISSN 0022-3727
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Hwang, Sooyeon, and Stach, Eric. Using in situ and operando methods to characterize phase changes in charged lithium nickel cobalt aluminum oxide cathode materials. United States: N. p., 2019. Web. doi:10.1088/1361-6463/ab60ea.
Hwang, Sooyeon, & Stach, Eric. Using in situ and operando methods to characterize phase changes in charged lithium nickel cobalt aluminum oxide cathode materials. United States. https://doi.org/10.1088/1361-6463/ab60ea
Hwang, Sooyeon, and Stach, Eric. Wed . "Using in situ and operando methods to characterize phase changes in charged lithium nickel cobalt aluminum oxide cathode materials". United States. https://doi.org/10.1088/1361-6463/ab60ea. https://www.osti.gov/servlets/purl/1580237.
@article{osti_1580237,
title = {Using in situ and operando methods to characterize phase changes in charged lithium nickel cobalt aluminum oxide cathode materials},
author = {Hwang, Sooyeon and Stach, Eric},
abstractNote = {Lithium ion batteries have been extensively explored in recent decades in order to improve their electrochemical performance, address safety concerns, and reduce costs in larger-scale applications. Electrode materials are key components which govern the properties of the battery at the system level. Cathode materials are of particular importance as they are a limiting factor for achieving high energy density. Lithium nickel cobalt aluminum oxide (LiNi0.8Co0.15Al0.05O2, referred to subsequently as NCA) is one of successful cathode materials since it can deliver higher capacity than other cathode materials such as lithium cobalt oxide or lithium iron phosphate. However, structural instabilities that occur NCA during charging or at high temperatures is believed to be the primary reason for performance degradation as well as a possible safety threat. Furthermore, understanding the structural evolution that occurs in NCA is of importance to acquire fundamental insights for taking full advantage of the high capacity of NCA materials. Beyond static information, in situ and operando characterization approaches allow us to observe structural changes under external stimulus or in a working condition, providing a deeper understanding of the routes by which structure evolve. In this review, we will describe the use of both in situ and operando characterization performed with both synchrotron X-ray based techniques and advanced electron microscopy, as the combination of these techniques have been shown to be particularly effective at providing structural information at complementary length scales.},
doi = {10.1088/1361-6463/ab60ea},
journal = {Journal of Physics. D, Applied Physics},
number = 11,
volume = 53,
place = {United States},
year = {Wed Dec 11 00:00:00 EST 2019},
month = {Wed Dec 11 00:00:00 EST 2019}
}

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