Winning the Global Battery Arms Race

Conventional Li-ion Cell Architecture

The illustration below shows a cross-section of a conventional lithium-ion (Li-ion) cell architecture, where electrodes and separators are wound to fit into a rectangular metal case or a polymer pouch. Most Li-ion batteries use a graphite anode, which is carbon in a crystalline form with a theoretical specific capacity of about 372 milliamp-hours per gram (mAh/g). Researchers have long known that a silicon anode could significantly increase the energy density of a Li-ion battery because it has a theoretical specific capacity of about 3,579 mAh/g, over 9 times that of graphite.

Illustration ©2021 Enovix Corporation

Enovix 3D Cell Architecture

The Enovix 3D cell is the most significant battery architecture advancement in the last 30 years, in large part because it is well suited to accommodate silicon as the only active lithium cycling material in the anode (i.e., 100% active silicon).

Source: Enovix Corporation
Source: Enovix Corporation

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Enovix

Enovix

Enovix, based in Fremont, California, is the first company capable of volume production of advanced Lithium-ion batteries with a 100% active silicon anode.