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Title: The effect of charging rate on the graphite electrode of commercial lithium-ion cells: A post-mortem study

Journal Article · · Journal of Power Sources
 [1];  [2];  [2];  [3];  [3];  [4];  [2]
  1. Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Warwick, England (United Kingdom)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Univ. of Warwick, England (United Kingdom)
  4. Jaguar Land Rover, England (United Kingdom)
+ Show Author Affiliations

Increased charging rates negatively affect the lifetime of lithium-ion cells by increasing cell resistance and reducing capacity. This work is a post-mortem study of 18650 cells subjected to charge rates of 0.7-, 2-, 4-, and 6-C. For cells charged at 0.7-C to 4-C, this performance degradation is primarily related to surface film thickness with no observable change in surface film chemical composition. However, at charge rates of 6-C, the chemical composition of the surface film changes significantly, suggesting that this change is the reason for the sharper increase in cell resistance compared to the lower charge rates. In addition, we found that surface film formation was not uniform across the electrode. Surface film was thicker and chemically different along the central band of the electrode “jelly roll”. This result is most likely attributable to an increase in temperature that results from non-uniform electrode wetting during manufacture. As a result, this non-uniform change further resulted in active material delamination from the current collector owing to chemical changes to the binder for the cell charged at 6-C.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
WMG centre HVM Catapult; Engineering and Physical Sciences Research Council (EPSRC); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); Jaguar Land Rover
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1339417
Journal Information:
Journal of Power Sources, Journal Name: Journal of Power Sources Journal Issue: C Vol. 335; ISSN 0378-7753
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (16)

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Vacuum-tight sample transfer stage for a scanning electron microscopic study of stabilized lithium metal particles journal October 2011
Factors that affect cycle-life and possible degradation mechanisms of a Li-ion cell based on LiCoO2 journal September 2002
Main aging mechanisms in Li ion batteries journal August 2005
The effect of the charging protocol on the cycle life of a Li-ion battery journal October 2006
A comparative study of commercial lithium ion battery cycle life in electrical vehicle: Aging mechanism identification journal April 2014
Prospects for reducing the processing cost of lithium ion batteries journal February 2015
Low-Temperature Behavior of Li-Ion Cells journal January 2001
Improved MCMB Anodes by Surface Modification with Self-Assembling Nonionic Surfactants journal January 2004
XPS Identification of the Organic and Inorganic Components of the Electrode/Electrolyte Interface Formed on a Metallic Cathode journal January 2005
Effects of Electrolyte Composition on Lithium Plating in Lithium-Ion Cells journal January 2011
Optimizing Areal Capacities through Understanding the Limitations of Lithium-Ion Electrodes journal November 2015
In-Situ Detection of Lithium Plating Using High Precision Coulometry journal January 2015
Study of Electrolyte Components in Li Ion Cells Using Liquid-Liquid Extraction and Gas Chromatography Coupled with Mass Spectrometry journal January 2014
Overcharge Effect on Morphology and Structure of Carbon Electrodes for Lithium-Ion Batteries journal January 2012
Lithium Ion Battery Anode Aging Mechanisms journal March 2013

Cited By (18)

The impact of high-frequency-high-current perturbations on film formation at the negative electrode-electrolyte interface journal April 2017
Mineralogy of the Manganese Oxides journal January 1944
Atomic and Molecular Layer Deposition for Superior Lithium-Sulfur Batteries: Strategies, Performance, and Mechanisms journal May 2018
Atomic and Molecular Layer Deposition for Superior Lithium-Sulfur Batteries: Strategies, Performance, and Mechanisms journal June 2018
Classification of Calendering‐Induced Electrode Defects and Their Influence on Subsequent Processes of Lithium‐Ion Battery Production journal May 2019
Model‐Based Uncertainty Quantification for the Product Properties of Lithium‐Ion Batteries journal April 2019
Lithium metal protected by atomic layer deposition metal oxide for high performance anodes journal January 2017
Chemically soft solid electrolyte interphase forming additives for lithium-ion batteries journal January 2018
Hierarchical C/SiO x /TiO 2 ultrathin nanobelts as anode materials for advanced lithium ion batteries journal July 2018
Influence of the Electrolyte Quantity on Lithium-Ion Cells journal January 2019
Modeling the Effect of Fast Charge Scenario on the Cycle Life of a Lithium-Ion Battery journal January 2018
Mechanism of Thermal Runaway in Lithium-Ion Cells journal January 2018
Extreme Fast Charge Challenges for Lithium-Ion Battery: Variability and Positive Electrode Issues journal January 2019
Modulation of Ionic Current Limitations by Doping Graphite Anodes journal January 2018
High-rate lithium ion energy storage to facilitate increased penetration of photovoltaic systems in electricity grids journal January 2019
High-rate lithium ion energy storage to facilitate increased penetration of photovoltaic systems in electricity grids text January 2020
High-rate lithium ion energy storage to facilitate increased penetration of photovoltaic systems in electricity grids text January 2019
High-rate lithium ion energy storage to facilitate increased penetration of photovoltaic systems in electricity grids text January 2019

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Related Subjects

30 DIRECT ENERGY CONVERSION
36 MATERIALS SCIENCE
Lithium-ion
aging
increased charge rate
materials characterization