THREE-ELECTRODE DEVICE FOR PERFORMING ELECTROCHEMICAL ANALYSIS ON LITHIUM ION BATTERIES

• Main Authors: Koch, Brian J, Rober, Kevin B, Conell, Robert S
• Format: Patent
• Language: English
• Published: 01.08.2019
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TESTING

A device for performing electrochemical analysis of electrochemical cells includes a housing, upper and lower stack holders, and first, second, and third current collectors. The housing includes an inner chamber that can be hermetically sealed and a central axis extending through the inner chamber. The upper and lower stack holders are disposed within the inner chamber and cooperate to define an electrode stack chamber for housing a negative electrode, a positive electrode, and a center-mounted reference electrode. The first, second, and third current collectors are at least partially disposed in the inner chamber. The first current collector can be electrically connected to a first side of the negative electrode and an external circuit. The second current collector can be in electrical contact with the positive electrode and the external circuit. The third cylindrical body can be in electrical contact with the center-mounted reference electrode and the external circuit.