公开(公告)号：US20230187612A1

公开(公告)日：2023-06-15

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 ,  H01M4/62 ,  H01M10/0567 ,  H01M4/04 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/131

CPC classification number: H01M4/366 ,  H01M4/62 ,  H01M10/0567 ,  H01M4/0428 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/131 ,  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：US20210129662A1

公开(公告)日：2021-05-06

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: B60K15/035 ,  F17C13/00

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.