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Title: In situ soft XAS study on nickel-based layered cathode material at elevated temperatures: A novel approach to study thermal stability

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep06827· OSTI ID:1169028
 [1];  [2];  [1];  [1];  [1];  [1];  [1];  [3];  [3];  [4];  [5]
  1. Sungkyunkwan University (Korea, Republic of)
  2. Brookhaven National Laboratory (BNL), Upton, NY (United States)
  3. National Institute of Standards and Technology (NIST), Gaithersburg, MD (United States)
  4. Argonne National Laboratory (United States). Advanced Proton Source (APS)
  5. Dongguk University-Seoul (Korea, Republic of)
+ Show Author Affiliations

Tracking thermally induced reactions has always been challenging for electrode materials of electrochemical battery systems. Traditionally, a variety of calorimetric techniques and in situ XRD at elevated temperatures has been used to evaluate the thermal stability of electrode materials. These techniques are capable of providing variations in heat capacity, mass and average bulk composition of materials only. Herein, we report investigation of thermal characteristics of Li0.33Ni0.8Co0.15Al0.05O2 by using in situ soft XAS measurements in combination with XRD. Fluorescence yield and partial electron yield measurements are used simultaneously to obtain element selective surface and bulk information. Fluorescence yield measurements reveal no energy change of the absorption peak and thus no valence state change in the bulk. However, electron yield measurements indicate that NiO-type rock salt structure is formed at the surface at temperatures above 200 degrees C while no evidence for a surface reaction near Co sites in investigated temperature range is found. These results clearly show that in situ soft XAS can give a unique understanding of the role of each element in the structural transformation under thermal abuse offering a useful guidance in developing new battery system with improved safety performance.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source; Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); KETEP; KEIT
Grant/Contract Number:
SC0012704; AC02-06CH11357
OSTI ID:
1169028
Alternate ID(s):
OSTI ID: 1223360; OSTI ID: 1393965
Report Number(s):
BNL-107187-2014-JA; KC0207010
Journal Information:
Scientific Reports, Vol. 4, Issue 29; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 44 works
Citation information provided by
Web of Science

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Cited By (10)

Review of Recent Development of In Situ/Operando Characterization Techniques for Lithium Battery Research journal May 2019
In-operando high-speed tomography of lithium-ion batteries during thermal runaway journal April 2015
Evolution of redox couples in Li- and Mn-rich cathode materials and mitigation of voltage fade by reducing oxygen release journal July 2018
Empowering multicomponent cathode materials for sodium ion batteries by exploring three-dimensional compositional heterogeneities journal January 2018
Thermally-driven mesopore formation and oxygen release in delithiated NCA cathode particles journal January 2019
Long-term chemothermal stability of delithiated NCA in polymer solid-state batteries journal January 2019
Using in situ and operando methods to characterize phase changes in charged lithium nickel cobalt aluminum oxide cathode materials journal January 2020
Structural Relaxation of Li x Ni 0.874 Co 0.090 Al 0.036 O 2 after Lithium Extraction down to (x ≤ 0.12) journal December 2018
In situ Synchrotron X-ray Techniques for Structural Investigation of Electrode Materials for Li-ion Battery journal December 2019
Long-Term Chemothermal Stability of Delithiated NCA in Polymer Solid-State Batteries text January 2019

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Related Subjects

25 ENERGY STORAGE
LITHIUM ION BATTERY
THERMAL STABILITY
SYNCHROTRON BASED CHARACTERIZATION TECHNIQUES
SOFT XAS
NSLS
S YNCHR O TRON BASED CHARACTERIZATION TEC HNIQUES