GHYRN EVAN LOVENESS
Pilots at Ehrhorn Ave, Mountain View, CA

2013001, Jan 10, 2013

Jul 2, 2012

13/540484

Ghyrn E. Loveness - Mountain View CA, US
Song Han - Foster City CA, US
Zuqin Liu - Sunnyvale CA, US

AMPRIUS INC. - Sunnyvale CA

H01M 4/62, H01M 4/583, H01M 4/04, H01M 4/02, H01M 4/38, B82Y 30/00

429212, 429209, 4292181, 4292318, 429232, 427 58, 977762, 977734

Provided herein are novel template electrode materials and structures for lithium ion cells. Related methods are also provided. According to various embodiments, an electrode can include a nanostructured template, an electrochemically active material layer coating the template, and a first intermediate layer between the nanostructured template and the electrochemically active material layer. In one arrangement, the nanostructured template includes silicide nanowires. The electrochemically active material may be any of silicon, tin, germanium, carbon, metal hydrides, silicides, phosphides, and nitrides. The first intermediate layer may facilitate adhesion between the nanostructured template and the electrochemically active material layer, electronic conductivity within the electrode, and/or stress relaxation between the nanostructured template and the electrochemically active material layer.

8556996, Oct 15, 2013

Aug 1, 2012

13/564324

Ghyrn E. Loveness - Mountain View CA, US
William S. DelHagen - Menlo Park CA, US
Rainer Fasching - Mill Valley CA, US
Song Han - Foster City CA, US
Zuqin Liu - Sunnyvale CA, US

Amprius, Inc. - Sunnyvale CA

H01M 4/13, H01M 4/58, H01M 4/42, H01M 4/72, H01M 4/38, H01M 4/04, B05D 5/12, B82Y 30/00

296231, 429220, 429221, 4292315, 42923195, 429229, 429233, 4292318, 4271261, 977948

Provided are examples of electrochemically active electrode materials, electrodes using such materials, and methods of manufacturing such electrodes. Electrochemically active electrode materials may include a high surface area template containing a metal silicide and a layer of high capacity active material deposited over the template. The template may serve as a mechanical support for the active material and/or an electrical conductor between the active material and, for example, a substrate. Due to the high surface area of the template, even a thin layer of the active material can provide sufficient active material loading and corresponding battery capacity. As such, a thickness of the layer may be maintained below the fracture threshold of the active material used and preserve its structural integrity during battery cycling.

2013032, Dec 5, 2013

May 9, 2013

13/891035

Song Han - Foster City CA, US
Ghyrn E. Loveness - Mountain View CA, US

Amprius, Inc. - Sunnyvale CA

H01M 4/04

264104

Provided are electrode layers for use in rechargeable batteries, such as lithium ion batteries, and related fabrication techniques. These electrode layers have interconnected hollow nanostructures that contain high capacity electrochemically active materials, such as silicon, tin, and germanium. In certain embodiments, a fabrication technique involves forming a nanoscale coating around multiple template structures and at least partially removing and/or shrinking these structures to form hollow cavities. These cavities provide space for the active materials of the nanostructures to swell into during battery cycling. This design helps to reduce the risk of pulverization and to maintain electrical contacts among the nanostructures. It also provides a very high surface area available ionic communication with the electrolyte. The nanostructures have nanoscale shells but may be substantially larger in other dimensions. Nanostructures can be interconnected during forming the nanoscale coating, when the coating formed around two nearby template structures overlap.