公开(公告)号：US20230187654A1

公开(公告)日：2023-06-15

申请号：US17548848

申请日：2021-12-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Teresa J. Rinker ,  Erik D. Huemiller ,  Vijay P. Saharan ,  Jesse M. Roy ,  Thomas J. Chapaton ,  Jeffrey A. Abell

IPC: H01M4/66

CPC classification number: H01M4/667 ,  H01M4/662

Abstract: The concepts described herein provide a hybrid metal/polymer current collector for a battery cell electrode that includes a collector body joined to a tab portion and encased in an electrically conductive overlay, and an associated method of manufacture. The tab portion is fabricated from a homogeneous electrically conductive material, the collector body is fabricated from a polymer, and the collector body is joined to the tab portion at a junction.

公开(公告)号：US20230155133A1

公开(公告)日：2023-05-18

申请号：US17525096

申请日：2021-11-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Kanako Okada ,  Jesse M. Roy ,  Li Yang ,  Mary E. Fortier

IPC: H01M4/62 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/04 ,  H01M10/052 ,  H01M4/505 ,  H01M4/525

CPC classification number: H01M4/628 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/0402 ,  H01M10/052 ,  H01M4/505 ,  H01M4/525 ,  H01M2300/0025

Abstract: A negative electrode for an electrochemical cell of a secondary lithium metal battery is manufactured by a method in which a precursor solution is applied to a major surface of a lithium metal substrate to form a protective interfacial layer thereon. The precursor solution includes a first organic solvent mixture, a dioxolane, and a fluorinated organosilane. The protective interfacial layer exhibits a composite structure including a polymeric matrix component and a lithium-containing dispersed component embedded in the polymeric matrix component.