Gm Global Technolgoy Operations, Inc.

Ming Wang

Ryan Curtis Sekol

Shaomao Xu

Xiaowei Yu

Xiaosong Huang

Haijing Liu

Meiyuan Wu

Yong Lu

Mary Gilliam

Diptak Bhattacharya

Chuanlong Wang

Yaoyu Ren

A manufacturing system for an electrode of a battery cell includes a conveyor belt configured to receive a fiberized powder mixture including an active material, a conductive additive, and a binder. A powder dispensing stage is arranged adjacent to the conveyor belt and configured to dispense the fiberized powder mixture. A pre-forming stage is arranged adjacent to the conveyor belt and configured to receive the fiberized powder mixture dispensed by the powder dispensing stage and to press the fiberized powder mixture into a raw active material layer. N calendaring rollers configured to receive the raw active material layer from the conveyor belt and to calendar the raw active material layer to form an active material layer, where N is an integer greater than one. A pair of laminating rollers is configured to laminate the active material layer to a current collector to form an electrode.

Continuous, solvent-free fabrication of electrodes using dry powder

A method for coating a web with a metal layer includes heating a metal in a container to create molten metal. The metal is selected from a group consisting of lithium (Li), sodium (Na), potassium (K), indium (In), tin (Sn), cadmium (Cd), zinc (Zn), and lead (Pb). The method includes coating at least one surface of a web with a metal layer using the molten metal. The web is made of a material selected from a group consisting of copper (Cu), nickel (Ni), titanium (Ti), stainless steel, polymer, and carbon.

Method for coating a metal layer such as lithium metal on a web such as a current collector foil

A method for manufacturing an anode electrode includes supplying an anode current collector; coating a first portion of the anode current collector with a precursor coating; not coating a second portion of the anode current collector with the precursor coating; treating the anode current collector with plasma to at least one of decrease lithium wettability of the first portion and to increase lithium wettability of the second portion; and coating the anode current collector with lithium metal to form an anode active material layer.

Method for tuning lithium wettability of an anode current collector using plasma surface modification

A method for manufacturing patterned electrodes includes extruding a mixture including an active material, a conductive additive, a binder, and a solvent from an extruder to form an active material layer; laminating the active material layer and a current collector; and patterning the active material layer using a patterned roller including a plurality of projections that form a plurality of features extending into the active material layer.

Patterning of active material layer of electrode during continuous extrusion

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Sterling Heights, MI, United States of America

Ming Wang