Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Operando Bragg Coherent Diffraction Imaging of LiNi0.8Mn0.1Co0.1O2 Primary Particles within Commercially Printed NMC811 Electrode Sheets

Journal Article · · ACS Nano
 [1];  [1];  [2];  [1];  [2];  [1];  [1];  [3];  [3];  [3];  [3];  [2];  [2];  [4];  [2]
  1. Univ. College London (United Kingdom). Electrochemical Innovation Lab.
  2. Univ. College London (United Kingdom). Electrochemical Innovation Lab.; The Faraday Institution, Didcot (United Kingdom)
  3. Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Diamond Light Source, Ltd.
  4. Univ. College London (United Kingdom); The Faraday Institution, Didcot (United Kingdom); Brookhaven National Lab. (BNL), Upton, NY (United States)
+ Show Author Affiliations
Due to complex degradation mechanisms, disparities between the theoretical and practical capacities of lithium-ion battery cathode materials persist. Specifically, Ni-rich chemistries such as LiNi0.8Mn0.1Co0.1O2 (or NMC811) are one of the most promising choices for automotive applications; however, they continue to suffer severe degradation during operation that is poorly understood, thus challenging to mitigate. Here in this paper we use operando Bragg coherent diffraction imaging for 4D analysis of these mechanisms by inspecting the individual crystals within primary particles at various states of charge (SoC). Although some crystals were relatively homogeneous, we consistently observed non-uniform distributions of inter- and intracrystal strain at all measured SoC. Pristine structures may already possess heterogeneities capable of triggering crystal splitting and subsequently particle cracking. During low-voltage charging (2.7–3.5 V), crystal splitting may still occur even during minimal bulk deintercalation activity; and during discharging, rotational effects within parallel domains appear to be the precursor for the nucleation of screw dislocations at the crystal core. Ultimately, this discovery of the central role of crystal grain splitting in the charge/discharge dynamics may have ramifications across length scales that affect macroscopic performance loss during real-world battery operation.
Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
Engineering and Physical Sciences Research Council (EPSRC); Faraday Institution; Royal Academy of Engineering; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704
OSTI ID:
1732146
Report Number(s):
BNL--220674-2020-JAAM
Journal Information:
ACS Nano, Journal Name: ACS Nano Journal Issue: 1 Vol. 15; ISSN 1936-0851
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (37)

Identifying the Origins of Microstructural Defects Such as Cracking within Ni‐Rich NMC811 Cathode Particles for Lithium‐Ion Batteries journal November 2020
Nickel-Rich Layered Lithium Transition-Metal Oxide for High-Energy Lithium-Ion Batteries journal March 2015
Degradation Mechanisms and Mitigation Strategies of Nickel-Rich NMC-Based Lithium-Ion Batteries journal October 2019
LixCoO2 (0 journal June 1980
ParaView: An End-User Tool for Large-Data Visualization book January 2005
3D analysis of a LiCoO2–Li(Ni1/3Mn1/3Co1/3)O2 Li-ion battery positive electrode using x-ray nano-tomography journal March 2013
The effect of thermal stability for high-Ni-content layer-structured cathode materials, LiNi0.8Mn0.1−xCo0.1MoxO2 (x = 0, 0.02, 0.04) journal December 2013
A comparative study of structural changes in lithium nickel cobalt manganese oxide as a function of Ni content during delithiation process journal May 2016
Developments in X-ray tomography characterization for electrochemical devices journal December 2019
4D nano-tomography of electrochemical energy devices using lab-based X-ray imaging journal May 2018
Evolution of Structure and Lithium Dynamics in LiNi 0.8 Mn 0.1 Co 0.1 O 2 (NMC811) Cathodes during Electrochemical Cycling journal March 2019
Origin of Structural Degradation During Cycling and Low Thermal Stability of Ni-Rich Layered Transition Metal-Based Electrode Materials journal October 2017
Structural Changes and Thermal Stability of Charged LiNi x Mn y Co z O 2 Cathode Materials Studied by Combined In Situ Time-Resolved XRD and Mass Spectroscopy journal December 2014
Intragranular cracking as a critical barrier for high-voltage usage of layer-structured cathode for lithium-ion batteries journal January 2017
Coherent X-ray diffraction imaging of strain at the nanoscale journal April 2009
Three-dimensional imaging of dislocation propagation during crystal growth and dissolution journal June 2015
Charge distribution guided by grain crystallographic orientations in polycrystalline battery materials journal January 2020
Nucleation of dislocations and their dynamics in layered oxide cathode materials during battery charging journal July 2018
Bulk fatigue induced by surface reconstruction in layered Ni-rich cathodes for Li-ion batteries journal August 2020
A review of Ni-based layered oxides for rechargeable Li-ion batteries journal January 2017
4D visualisation of in situ nano-compression of Li-ion cathode materials to mimic early stage calendering journal January 2019
Synchrotron X-ray quantitative evaluation of transient deformation and damage phenomena in a single nickel-rich cathode particle journal January 2020
Nanoscale strain mapping in battery nanostructures journal February 2014
X-ray image reconstruction from a diffraction pattern alone journal October 2003
Application of optimization technique to noncrystalline x-ray diffraction microscopy: Guided hybrid input-output method journal August 2007
Three-Dimensional Imaging of Microstructure in Au Nanocrystals journal April 2003
Laser-preparation of geometrically optimised samples for X-ray nano-CT: LASER-PREPARATION OF GEOMETRICALLY OPTIMISED SAMPLES FOR X-RAY NANO-CT journal May 2017
High-Resolution Scanning X-ray Diffraction Microscopy journal July 2008
Topological defect dynamics in operando battery nanoparticles journal June 2015
Measuring Oxygen Release from Delithiated LiNi x Mn y Co 1-x-y O 2 and Its Effects on the Performance of High Voltage Li-Ion Cells journal January 2017
Review—Recent Advances and Remaining Challenges for Lithium Ion Battery Cathodes: I. Nickel-Rich, LiNi journal December 2016
Effect of Ambient Storage on the Degradation of Ni-Rich Positive Electrode Materials (NMC811) for Li-Ion Batteries journal January 2018
Study of the Failure Mechanisms of LiNi 0.8 Mn 0.1 Co 0.1 O 2 Cathode Material for Lithium Ion Batteries journal January 2015
Transition Metal Dissolution, Ion Migration, Electrocatalytic Reduction and Capacity Loss in Lithium-Ion Full Cells journal December 2016
Review—Promises and Challenges of In Situ Transmission Electron Microscopy Electrochemical Techniques in the Studies of Lithium Ion Batteries journal January 2017
Phase retrieval algorithms: a comparison journal January 1982
Evolution of Electrochemical Cell Designs for In-Situ and Operando 3D Characterization journal November 2018

Similar Records

Synchrotron Operando Depth Profiling Studies of State-of-Charge Gradients in Thick Li(Ni0.8Mn0.1Co0.1)O2 Cathode Films
Journal Article · Sun Jul 05 00:00:00 UTC 2020 · Chemistry of Materials · OSTI ID:1677676
Thermal runaway mechanism of lithium-ion battery with LiNi0.8Mn0.1Co0.1O2 cathode materials
Journal Article · Tue Feb 16 00:00:00 UTC 2021 · Nano Energy · OSTI ID:1820565

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CDI
Li ion
NMC811
X-ray
electric vehicle
operando
synchrotron