公开(公告)号：US10367193B2

公开(公告)日：2019-07-30

申请号：US16243224

申请日：2019-01-09

Applicant: STOREDOT LTD.

Inventor： Doron Burshtain ,  Sergey Remizov ,  David Jacob ,  Nitzan Shadmi ,  Hani Farran ,  Leora Shapiro ,  Ohad Goldbart ,  Boris Brudnik ,  Carmit Ophir ,  Daniel Aronov

IPC: H01M4/134 ,  H01M4/62 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/1395 ,  H01M4/38

Abstract: Improved anodes and cells are provided, which enable fast charging rates with enhanced safety due to much reduced probability of metallization of lithium on the anode, preventing dendrite growth and related risks of fire or explosion. Anodes and/or electrolytes have buffering zones for partly reducing and gradually introducing lithium ions into the anode for lithiation, to prevent lithium ion accumulation at the anode electrolyte interface and consequent metallization and dendrite growth. Various anode active materials and combinations, modifications through nanoparticles and a range of coatings which implement the improved anodes are provided.

公开(公告)号：US20180212239A1

公开(公告)日：2018-07-26

申请号：US15792779

申请日：2017-10-25

Applicant: StoreDot Ltd.

Inventor： David Jacob ,  Sergey Remizov ,  Nitzan Shadmi ,  Hani Farran ,  Daniel Aronov

IPC: H01M4/36 ,  H01M4/60 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/38 ,  H01M4/485 ,  H01M4/02

Abstract: Core-shell particles, composite anode material, anodes made therefrom, lithium ion cells and methods are provided, which enable production of fast charging lithium ion batteries. The composite anode material has core-shell particles which are configured to receive and release lithium ions at their cores and to have shells that are configured to allow for core expansion upon lithiation. The cores of the core-shell particles are connected to the respective shells by conductive material such as carbon fibers, which may form a network throughout the anode material and possibly interconnect cores of many core-shell particles to enhance the electrical conductivity of the anode. Ionic conductive material and possibly mechanical elements may be incorporated in the core-shell particles to enhance ionic conductivity and mechanical robustness toward expansion and contraction of the cores during lithiation and de-lithiation.