Preparation of Structural Cathodes: Geometry Optimization, Mechanical Milling, and Formulation

Report No. ARL-TR-5337
Authors: James Snyder, Emma Wong, Dan Baechle, Brian Capaldo, Jeffrey Meisgeier, Cara Watson, and Clifford Hubbard
Date/Pages: September 2010; 50 pages
Abstract: The focus of this technical report is on the structural cathode in support of the U.S. Army Research Laboratory (ARL) structural battery effort. The structural requirements of this component are that it has suitable mechanical properties, such as a high strength and/or stiffness and that it has adequate interfacing with the matrix to allow for load transfer. The device requirements are it supports energy storage, referred to as capacity, by means of lithium intercalation; it enables lithium ion transport to and from the electrolyte; and it enables electron transport to and from the external circuit. The methods described here focus on derivatives of commercial cathodes that encompass a granular active cathode material, carbon additive for electrical conductivity, polymer binder, and conductive substrate for current collection. The research areas include optimization of the substrate geometry; investigation of particle milling and film formulation to optimize electrochemical capacity, electrical conductivity, and film coherence; and investigation of different substrate materials.
Distribution: Approved for public release
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Last Update / Reviewed: September 1, 2010