公开(公告)号：US20170237074A1

公开(公告)日：2017-08-17

申请号：US15443821

申请日：2017-02-27

Applicant: Applied Materials, Inc.

Inventor： Sergey D. LOPATIN ,  Dmitri A. BREVNOV ,  Eric H. LIU ,  Robert Z. BACHRACH ,  Connie P. WANG

IPC: H01M4/62 ,  H01M4/36 ,  H01M4/38 ,  B05D3/00 ,  H01M4/04 ,  C25D3/56 ,  B05D1/06 ,  H01M10/0525 ,  H01M4/587

CPC classification number: H01M4/626 ,  H01M4/02 ,  H01M4/0404 ,  H01M4/0419 ,  H01M4/0452 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/364 ,  H01M4/366 ,  H01M4/38 ,  H01M4/386 ,  H01M4/587 ,  H01M4/625 ,  H01M4/64 ,  H01M4/661 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027 ,  Y02E60/122 ,  Y02P70/54

Abstract: High capacity energy storage devices and energy storage device components, and more specifically, to a system and method for fabricating such high capacity energy storage devices and storage device components using processes that form three-dimensional porous structures are provided. In one embodiment, an anode structure for use in a high capacity energy storage device, comprising a conductive collector substrate, a three-dimensional copper-tin-iron porous conductive matrix formed on one or more surfaces of the conductive collector substrate, comprising a plurality of meso-porous structures formed over the conductive current collector, and an anodically active material deposited over the three-dimensional copper-tin-iron porous conductive matrix is provided. In certain embodiments, the three-dimensional copper-tin-iron porous conductive matrix further comprises a plurality of columnar projections formed on the conductive current collector with the plurality of meso-porous structure formed on the plurality of columnar projections.

公开(公告)号：US20190013513A1

公开(公告)日：2019-01-10

申请号：US16067795

申请日：2017-01-04

Applicant: Applied Materials, Inc.

Inventor： Gao LIU ,  Sergey D. LOPATIN ,  Eric H. LIU ,  Ajey M. JOSHI ,  Guo AI ,  Zhihui WANG ,  Hui ZHAO ,  Donghai WANG

IPC: H01M4/139 ,  H01M4/62 ,  H01M4/04 ,  H01M4/38 ,  H01M4/587 ,  H01M4/36 ,  H01M4/48 ,  H01M10/0525

Abstract: A simple solution processing method is developed to achieve uniform and scalable stabilized lithium metal powder coating on Li-ion negative electrode. A solvent and binder system for stabilized lithium metal powder coating is developed, including the selection of solvent, polymer binder and enhancement of polymer concentration. The enhanced binder solution is 1% concentration of polymer binder in xylene, and the polymer binder is chosen as the mixture of poly(styrene-co-butadiene) rubber (SBR) and polystyrene (PS). Long-sustained, uniformly dispersed stabilized lithium metal powder suspension can be achieved with the enhanced binder solution. A uniform stabilized lithium metal powder coating can be achieved with simple doctor blade coating method and the resulting stabilized lithium metal powder coating can firmly glued on the anode surface. With the prelithiation of negative electrode by stabilized lithium metal powder, improvements in electrochemical performances are demonstrated in both graphite/NMC and SiO/NMC full-cell.