Storedot Ltd.

3dbatteries Ltd.

Doron Burshtain

Daniel Aronov

Nir Kedem

Carmit Ophir

Eran Sella

Hani Farran

Leora Shapiro

Leonid Krasovitsky

Ronny Costi

Ron Paz

Liron Amir

Olga Guchok

Nir Pour

Nir Baram

Sergey Remizov

David Jacob

Ohad Goldbart

Nitzan Shadmi

Boris Brudnik

Niles A Fleischer

Yaniv Damtov

Libi Brakha

Shaked Rosenne

Erez Schreiber

The technology concerns methods for stabilizing slurries and/or electrophoretic deposition (EPD) bath suspensions for the preparation of electrodes and/or separation area or any other coating and specifically, to electrodes and separators for use in energy storage devices.

De-flocculant as slurry and EPD bath stabilizer and uses thereof

Systems and methods are provided, in which the level of metal ions in cells stacks and lithium ion batteries is regulated in situ, with the electrodes of the cell stack(s) in the respective pouches. Regulation of metal ions may be carried out electrochemically by metal ion sources in the pouches, electrically connected to the electrodes. The position and shape of the metal ion sources may be optimized to create uniform metal ion movements to the electrode surfaces and favorable SEI formation. The metal ion sources may be removable, or comprise a lithium source for lithiating the anodes or cathodes during operation of the battery according to SoH parameters. Regulation of metal ions may be carried out from metal ion sources in separate electrolyte reservoir(s), with circulation of the metal-ion-containing electrolyte through the cell stacks in the pouches prior or during the formation.

In-operation cathode lithiation according to SoH monitoring

Electrolytes, anodes, lithium ion cells and methods are provided for preventing lithium metallization in lithium ion batteries to enhance their safety. Electrolytes comprise up to 20% ionic liquid additives which form a mobile solid electrolyte interface during charging of the cell and prevent lithium metallization and electrolyte decomposition on the anode while maintaining the lithium ion mobility at a level which enables fast charging of the batteries. Anodes are typically metalloid-based, for example include silicon, germanium, tin and/or aluminum. A surface layer on the anode bonds, at least some of the ionic liquid additive to form an immobilized layer that provides further protection at the interface between the anode and the electrolyte, prevents metallization of lithium on the former and decomposition of the latter.

Partly immobilized ionic liquid electrolyte additives for lithium ion batteries

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.

Preparing anodes for lithium ion cells from aluminum anode active material particles

Electrolytes, anode material particles and methods are provided for improving performance and enhancing the safety of lithium ion batteries. Electrolytes may comprise ionic liquid(s) as additives which protect the anode material particles and possibly bind thereto; and/or may comprise a large portion of fluoroethylene carbonate (FEC) and/or vinylene carbonate (VC) as the cyclic carbonate component, and possibly ethyl acetate (EA) and/or ethyl methyl carbonate (EMC) as the linear component; and/or may comprise composite electrolytes having solid electrolyte particles coated by flexible ionic conductive material. Ionic liquid may be used to pre-lithiate in situ the anode material particles. Disclosed electrolytes improve lithium ion conductivity, prevent electrolyte decomposition and/or prevents lithium metallization on the surface of the anode.

Semi-solid electrolytes with flexible particle coatings

Mobile layer of ionic liquid in electrolytes

Polymer coatings and anode material pre-lithiation

Buffering zone for preventing lithium metallization on the anode of lithium ion batteries

Composite lithium borates and/or phosphates and polymer coatings for active material particles

Methods for preparing anodes from anode active material particles with lithium borates and phosphates coatings

Pre-lithiation of multiple battery pouches

Introducing a mobile layer of ionic liquid into electrolytes of lithium ion batteries

Aluminum anode active material

Methods of preparing anodes using tin as active material

Tin silicon anode active material

Growing community of inventors

Herzliya, Israel

Doron Burshtain