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Meeting 2021 TMS Annual Meeting & Exhibition
Symposium 2021 Technical Division Student Poster Contest
Presentation Title Degradation Characterization in Low Cobalt Lithium-ion Intercalation Cathodes
Author(s) Hernando Gonzalez Malabe, Austin Gabhart, Megan Flannagin, Alex L'Antigua, George J Nelson
On-Site Speaker (Planned) Hernando Gonzalez Malabe
Abstract Scope Higher capacity layered transition metal oxide cathode materials for lithium-ion batteries (LIB) are being pursued to improve overall LIB capacity. The present work seeks to connect morphological and chemical changes within the cathode microstructure to charge cut-off voltage, electrode composition, and operating temperature to better describe degradation behavior in low cobalt intercalation cathodes. To correlate these factors with the electrode degradation a combined ex-situ and in operando characterization approach is being pursued. Here, results are presented from cyclic voltammetry (CV), ex-situ characterization by X-ray diffraction (XRD), and scanning electron microscopy (SEM). Current results show an acceleration of the degradation process at higher voltage, as demonstrated by significant capacity loss and peak shifts in CV data indicating altered electrochemical activity. Evidence of additional phase formation is observed in XRD of cycled batteries, with the corresponding breakdown of active material particles seen with SEM imaging.
Proceedings Inclusion? Undecided
Keywords Energy Conversion and Storage, Characterization, Copper / Nickel / Cobalt

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Flexible Aqueous Rechargeable Battery Operating Over an Extended Temperature Range
Batteries Made with Calcium Could Be Better for Electric Cars or Storing Renewable Energy
Comparison of Laser Diffraction and Image Analysis Techniques for Particle Size-Shape Characterization in Additive Manufacturing Applications
Degradation Characterization in Low Cobalt Lithium-ion Intercalation Cathodes
First Principles Study of Sigma Phase Destabilization in Compositionally-complex Stainless Steel Alloys
Investigation of Mechanical Properties and Microstructure in Additively Manufactured Austenitic 316L Stainless Steel
Mechanical and Microstructural Properties of FeCrAl Accident Tolerant Fuels Cladding Subjected to Flow Boiling CHF Testing
Mechanical Behavior of Thermally Stable, Hierarchical Ni-Y Alloys
Micro-structure Dependent Nano-scratch Behavior in Additively Manufactured Inconel 718
Nano-mechanical Behavior of Advanced Structural Alloys
Prediction and Testing of Hot Cracking Susceptibility during Local Melting in Binary and Multi Component Aluminum Alloys
Solidification and Defects Structure Evolution in Metal Additive Manufacturing via Molecular Dynamics Simulations
Using Distribution of Relaxation Times Analysis and Microstructural Characterization to Quantify the Effects of Nanoparticle Infiltrants on the Catalytic Activity of Solid Oxide Fuel Cell Anodes
Utilizing Advanced Manufacturing for the Development of Advanced In-pile Sensors and Instrumentation
Utilizing CALPHAD Methods to Determine Phases in a Compositionally Complex Fe-Cr-based Alloy

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