Author:
Hendricks Christopher E.,Mansour Azzam N.,Fuentevilla Daphne A.,Waller Gordon H.,Ko Jonathan K.,Pecht Michael G.
Abstract
In some applications, such as military or back-up energy applications, lithium-ion batteries can undergo storage for multiple years without use. If the batteries are not properly maintained, the pack voltage can decrease over time due to cell self-discharge, battery management system power requirements, and parasitic loads. However, lithium-ion batteries have a recommended discharge voltage limit corresponding to a nominal 0% state of charge, and if discharged below this limit, they will experience an overdischarge condition which can lead to dissolution of the copper current collector and introduce potential safety and performance issues. This paper investigates the nature of copper dissolution in overdischarged lithium-ion batteries including the relative concentration and chemical state of the copper found in overdischarged batteries through characterization by X-ray photoelectron spectroscopy and X-ray absorption fine structure spectroscopy.
Publisher
The Electrochemical Society
Subject
Materials Chemistry,Electrochemistry,Surfaces, Coatings and Films,Condensed Matter Physics,Renewable Energy, Sustainability and the Environment,Electronic, Optical and Magnetic Materials
Cited by
39 articles.
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