公开(公告)号：US11047530B2

公开(公告)日：2021-06-29

申请号：US16175218

申请日：2018-10-30

Applicant: GM Global Technology Operations LLC

Inventor： Matthew Beckner ,  Edward A. Anculle

IPC: F17C1/16

Abstract: Pressure vessels having a grooved liner and methods of forming the same are described. The pressure vessel includes a liner surrounding a cavity therein, an outer surface of the liner disposed opposite the cavity, a boss disposed at a first end of the liner, a composite layer surrounding the liner, an inner surface of the composite layer disposed proximate the liner, and a plurality of longitudinal grooves configured to release gas present between the inner surface of the composite layer and the outer surface of the liner. The liner defines a longitudinal axis therethrough. The boss and the outer surface of the liner define the plurality of longitudinal grooves therein. The plurality of longitudinal grooves extends along the longitudinal axis from the boss toward a second end of the liner. The composite layer spans each of the plurality of longitudinal grooves.

公开(公告)号：US20210010640A1

公开(公告)日：2021-01-14

申请号：US16506324

申请日：2019-07-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Matthew Beckner

IPC: F17C1/16

Abstract: A storage tank for pressurized gas includes a liner defining an interior cavity for storing the pressurized gas. The storage tank further includes a nanoporous carbon shell formed from at least one pyrolyzed polymer. The liner is disposed at an inner side of the nanoporous carbon shell. The storage tank further includes a carbon fiber reinforced polymer layer disposed on an outer side of the nanoporous carbon shell opposite from the liner. The nanoporous carbon shell has an exposed surface at an exterior of the storage tank and is configured to permit gas permeated through the liner from the interior cavity to diffuse through the nanoporous carbon shell to the exposed surface.

公开(公告)号：US12119484B2

公开(公告)日：2024-10-15

申请号：US17548031

申请日：2021-12-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Biqiong Wang ,  Meinan He ,  Anne M. Dailly ,  Matthew Beckner ,  Mei Cai

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0567 ,  H01M4/02

CPC classification number: H01M4/366 ,  H01M4/0428 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2004/021 ,  H01M2004/028

Abstract: A positive electrode including a plurality of electroactive particles defining an electroactive layer is provided. A first lithium-containing coating is disposed on one or more surfaces of the electroactive layer. The first lithium-containing coating covers between about 30% and about 50% of a total exposed surface area of the electroactive layer. A second lithium-containing coating encompasses at least one electroactive particle of the plurality of electroactive particles. The second lithium-containing coating covers between about 95% and about 100% of the at least one electroactive particle. The first and second lithium-containing coatings each have a thickness between about 0.2 nm and about 5 nm. The positive electrode further includes an electrolyte additive that aids in the formation of a first passivation layer on exposed surfaces of the first lithium-containing coating, and a second passivation layer on exposed surfaces of the second lithium-containing coating.

公开(公告)号：US11299036B2

公开(公告)日：2022-04-12

申请号：US16676204

申请日：2019-11-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Matthew Beckner ,  James R. Salvador ,  Anne M. Dailly

IPC: B60K15/03 ,  F17C13/00 ,  B60K15/035 ,  B60K15/077

Abstract: A storage tank for a gas is provided. The storage tank includes a liner defining an internal compartment; a boss coupled to the liner; an interlayer covering a portion of the boss and the liner, the interlayer being non-pyrolyzed and including an interconnected web and pores having a diameter greater than the diameter of a hydrogen molecule and less than or equal to about 2 nm; and an outer shell including a carbon fiber reinforced composite, the outer shell covering the interlayer, except for an interlayer end that is in contact with the boss, so that the interlayer end defines an interlayer ring that is exposed to an external environment. The storage tank is configured so that when gas diffuses through the liner to the interlayer, the interlayer channels the gas out of the exposed interlayer ring. Methods of fabricating the storage tank are also provided.

公开(公告)号：US11143362B2

公开(公告)日：2021-10-12

申请号：US16506324

申请日：2019-07-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Matthew Beckner

IPC: F17C1/16

Abstract: A storage tank for pressurized gas includes a liner defining an interior cavity for storing the pressurized gas. The storage tank further includes a nanoporous carbon shell formed from at least one pyrolyzed polymer. The liner is disposed at an inner side of the nanoporous carbon shell. The storage tank further includes a carbon fiber reinforced polymer layer disposed on an outer side of the nanoporous carbon shell opposite from the liner. The nanoporous carbon shell has an exposed surface at an exterior of the storage tank and is configured to permit gas permeated through the liner from the interior cavity to diffuse through the nanoporous carbon shell to the exposed surface.