公开(公告)号：US20210344004A1

公开(公告)日：2021-11-04

申请号：US16863655

申请日：2020-04-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jin LIU ,  Xingcheng XIAO ,  Meinan HE ,  Mei CAI

IPC: H01M4/36 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525

Abstract: Solvent-free methods of making a component, like an electrode, for an electrochemical cell are provided. A particle mixture is processed in a dry-coating device having a rotatable vessel defining a cavity with a rotor. The rotatable vessel is rotated at a first speed in a first direction and the rotor at a second speed in a second opposite direction. The particle mixture includes first inorganic particles (e.g., electroactive particles), second inorganic particles (e.g., ceramic HF scavenging particles), and third particles (e.g., electrically conductive carbon-containing particles). The dry coating creates coated particles each having a surface coating (including second inorganic particles and third particles) disposed over a core region (the first inorganic particle). The coated particles are mixed with polymeric particles in a planetary and centrifugal mixer that rotates about a first axis and revolves about a second axis. The polymeric particles surround each of the plurality of coated particles.

公开(公告)号：US20210159493A1

公开(公告)日：2021-05-27

申请号：US16698361

申请日：2019-11-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xingcheng XIAO ,  Jin LIU

IPC: H01M4/40 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/04

Abstract: An electrode including an electrode active material and a mesoporous film coating at least a portion of the electrode active material is provided. The mesoporous film coats at least a portion of the electrode active material and includes M2SiO3, MAlO2, M2O—Al2O3—SiO2, or combinations thereof, where M is lithium (Li), sodium (Na), or a combination thereof. Methods of fabricating the electrode are also provided.

公开(公告)号：US20210020912A1

公开(公告)日：2021-01-21

申请号：US16514633

申请日：2019-07-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xingcheng XIAO ,  Jin LIU ,  Mei CAI ,  Meinan HE ,  Hongliang WANG

IPC: H01M4/1391 ,  H01M10/0525 ,  H01M10/0567 ,  H01M4/62 ,  H01M4/36 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/04

Abstract: A negative electrode according to various aspects of the present disclosure includes a negative electroactive material and a layer. The negative electroactive material includes a lithium-aluminum alloy. The layer is disposed directly on at least a portion of the negative electroactive material and coupled to the negative electroactive material. The layer includes anodic aluminum oxide and has a plurality of pores. The present disclosure also provides an electrochemical cell including the negative electrode. In certain aspects, the negative electroactive material is electrically conductive and functions as a negative electrode current collector such that the electrochemical cell is free of a distinct negative electrode current collector component. In certain aspects, the layer is ionically conductive and electrically insulating and functions as a separator such that the electrochemical cell is free of a distinct separator component. In various aspects, the present disclosure also provides a method of making the negative electrode.

公开(公告)号：US20210083294A1

公开(公告)日：2021-03-18

申请号：US16573605

申请日：2019-09-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xingcheng XIAO ,  Jin LIU ,  Jiagang XU ,  Mei CAI ,  Sherman H. ZENG

IPC: H01M4/62 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/485 ,  H01M4/60 ,  H01M4/131 ,  H01M4/137 ,  H01M4/1391 ,  H01M4/1399

Abstract: An electrode including an electrode active material and a ceramic hydrofluoric acid (HF) scavenger is provided. The ceramic hydrofluoric acid (HF) scavenger includes M2SiO3, MAlO2, M2O—Al2O3—SiO2, or combinations thereof, where M is lithium (Li), sodium (Na), or combinations thereof. Methods of making the electrode are also provided.