Gm Global Technolgoy Operations, Inc.

Insun Yoon

Mark William Verbrugge

Fang Dai

Biqiong Wang

A system for assessing a characteristic of a reference electrode assembly for an electrochemical cell that cycle lithium ions includes a controller and a test cell assembly. The test cell assembly includes a metal case electrically coupled to the controller and a test cell disposed within the metal case. The test cell includes a lithium metal layer and a separator assembly. The separator assembly includes a separator layer, a current collector layer deposited on the separator layer, and optionally an electroactive layer deposited on the separator layer such that the electroactive layer at least partially overlaps the current collector layer. The current collector layer is in direct physical contact with an electroactive layer and is electrically isolated from the lithium metal layer by the separator layer.

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Troy, MI, United States of America

Insun Yoon