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Title: Mechanical Degradation of Graphite/PVDF Composite Electrodes: A Model-Experimental Study

Journal Article · · Journal of the Electrochemical Society
DOI:https://doi.org/10.1149/2.0271603jes· OSTI ID:1378948
 [1];  [2];  [2];  [3];  [3];  [2]
  1. Toyota Motor Corp., Aichi (Japan); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)

Mechanical failure modes of a graphite/polyvinylidene difluoride (PVDF) composite electrode for lithium-ion batteries were investigated by combining realistic stress-stain tests and mathematical model predictions. Samples of PVDF mixed with conductive additive were prepared in a similar way to graphite electrodes and tested while submerged in electrolyte solution. Young's modulus and tensile strength values of wet samples were found to be approximately one-fifth and one-half of those measured for dry samples. Simulations of graphite particles surrounded by binder layers given the measured material property values suggest that the particles are unlikely to experience mechanical damage during cycling, but that the fate of the surrounding composite of PVDF and conductive additive depends completely upon the conditions under which its mechanical properties were obtained. Simulations using realistic property values produced results that were consistent with earlier experimental observations.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1378948
Journal Information:
Journal of the Electrochemical Society, Vol. 163, Issue 3; ISSN 0013-4651
Publisher:
The Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 57 works
Citation information provided by
Web of Science

References (39)

Aging of lithium-ion batteries journal March 2004
Ageing mechanisms in lithium-ion batteries journal September 2005
Stress generation and fracture in lithium insertion materials journal March 2006
Stress and Strain-Energy Distributions within Diffusion-Controlled Insertion-Electrode Particles Subjected to Periodic Potential Excitations journal January 2009
Theoretical Analysis of Stresses in a Lithium Ion Cell journal January 2010
Modeling Diffusion-Induced Stress in Li-Ion Cells with Porous Electrodes journal January 2010
Battery Cycle Life Prediction with Coupled Chemical Degradation and Fatigue Mechanics journal January 2012
Stochastic Analysis of Diffusion Induced Damage in Lithium-Ion Battery Electrodes journal January 2013
A review on lithium-ion battery ageing mechanisms and estimations for automotive applications journal November 2013
Threefold Increase in the Young’s Modulus of Graphite Negative Electrode during Lithium Intercalation journal January 2010
Examination of Graphite Particle Cracking as a Failure Mode in Lithium-Ion Batteries: A Model-Experimental Study journal January 2015
Sodium Carboxymethyl Cellulose journal January 2007
Toward Efficient Binders for Li-Ion Battery Si-Based Anodes: Polyacrylic Acid journal October 2010
A comparative study of polyacrylic acid and poly(vinylidene difluoride) binders for spherical natural graphite/LiFePO4 electrodes and cells journal September 2011
Plasticized microporous poly(vinylidene fluoride) separators for lithium-ion batteries. III. Gel properties and irreversible modifications of poly(vinylidene fluoride) membranes under swelling in liquid electrolytes journal January 2004
Comparison of PVDF and PVDF-TFE-P as Binders for Electrode Materials Showing Large Volume Changes in Lithium-Ion Batteries journal January 2003
Role of Plastic Deformation of Binder on Stress Evolution during Charging and Discharging in Lithium-Ion Battery Negative Electrodes journal January 2013
Diffusion-Induced Stresses of Spherical Core-Shell Electrodes in Lithium-Ion Batteries: The Effects of the Shell and Surface/Interface Stress journal January 2013
Stress and Strain in Silicon Electrode Models journal January 2015
Direct Observation of Inhomogeneous Solid Electrolyte Interphase on MnO Anode with Atomic Force Microscopy and Spectroscopy journal January 2012
3D visualization of inhomogeneous multi-layered structure and Young's modulus of the solid electrolyte interphase (SEI) on silicon anodes for lithium ion batteries journal January 2014
Single Nanowire Electrode Electrochemistry of Silicon Anode by in Situ Atomic Force Microscopy: Solid Electrolyte Interphase Growth and Mechanical Properties journal October 2014
Colossal Reversible Volume Changes in Lithium Alloys journal January 2001
Numerical Simulation of Intercalation-Induced Stress in Li-Ion Battery Electrode Particles journal January 2007
Simulation and analysis of stress in a Li-ion battery with a blended LiMn 2 O 4 and LiNi 0.8 Co 0.15 Al 0.05 O 2 cathode journal February 2014
Enhanced Cycle Life of Si Anode for Li-Ion Batteries by Using Modified Elastomeric Binder journal January 2005
Mechanical relaxations and moduli of oriented semicrystalline polymers journal October 1980
Tensile yield in poly(chlorotrifluoroethylene) and poly(vinylidene fluoride) journal February 1991
Tensile and dynamic mechanical behaviour of polymer blends based on PVDF journal April 1997
Blends of poly(vinylidene fluoride) with polyamide 6: interfacial adhesion, morphology and mechanical properties journal May 1998
Electro-mechanical properties of the piezoelectric polymer PVDF journal April 1999
Changes in structural and mechanical behaviour of PVDF with processing or thermal treatment. journal July 2001
Experimental trends in polymer nanocomposites—a review journal February 2005
Unveiling the Roles of Binder in the Mechanical Integrity of Electrodes for Lithium-Ion Batteries journal January 2013
Electrical property and microstructure analysis of poly(vinylidene fluoride)-based composites with different conducting fillers journal April 2007
Degradations of Thermal Shock Resistance and Fracture Toughness of Neutron Irradiated Reactor Graphite journal July 1987
High temperature young's modulus of a fine-grained nuclear graphite oxidized or prestressed to various levels journal January 1991
Brittle fracture of U-notched graphite plates under mixed mode loading journal October 2012
A unified model for strength degradation of oxidized IG-430 graphite column in VHTR journal May 2012

Cited By (8)

Computational modeling of Li-ion batteries journal August 2016
Analytical modeling and simulation of porous electrodes: Li-ion distribution and diffusion-induced stress journal August 2017
Perspective on the Mechanical Interaction Between Lithium Dendrites and Polymer Separators at Low Temperature journal August 2016
Testing and Modeling the Mechanical Properties of the Granular Materials of Graphite Anode journal January 2018
Application of Artificial Intelligence to State-of-Charge and State-of-Health Estimation of Calendar-Aged Lithium-Ion Pouch Cells journal January 2019
Mechano-Electrochemical Interaction and Degradation in Graphite Electrode with Surface Film journal January 2018
Poly(vinylidene fluoride) and Carbon Derivative Structures from Eco-Friendly MOF-5 for Supercapacitor Electrode Preparation with Improved Electrochemical Performance journal November 2018
Effect of Conductive Carbon Black on Mechanical Properties of Aqueous Polymer Binders for Secondary Battery Electrode journal September 2019