Seeo, Inc.

Other

Quantumscape Battery, Inc.

Quantumscape Corporation

University of California

William Hudson

Mohit Singh

Tim Holme

Zhebo Chen

Kian Kerman

Amal Mehrotra

Kim Van Berkel

Sunil Mair

Wes Hermann

Michael Geier

Ilan Gur

Hany Basam Eitouni

Cheng-Chieh Chao

Nitash Balsara

Ronald L Miller

Wendell E Robb

Mark J Maness

Drake Nguyen

Joseph Neron

Nitash Pervez Balsara

The present disclosure sets forth battery components for secondary and/or traction batteries. Described herein are new solid-state lithium (Li) conducting electrolytes including monolithic, single layer, and bi-layer solid-state sulfide-based lithium ion (Li) conducting catholytes or electrolytes. These solid-state ion conductors have particular chemical compositions which are arranged and/or bonded through both crystalline and amorphous bonds. Also provided herein are methods of making these solid-state sulfide-based lithium ion conductors including new annealing methods. These ion conductors are useful, for example, as membrane separators in rechargeable batteries.

Lithium, phosphorus, sulfur, and iodine containing electrolyte and catholyte compositions, electrolyte membranes for electrochemical devices, and annealing methods of making these electrolytes and catholytes

Set forth herein are electrolyte compositions that include both organic and inorganic constituent components and which are suitable for use in rechargeable batteries. Also set forth herein are methods and systems for making and using these composite electrolytes.

Composite electrolytes

Lithium, phosphorus, sulfur, and iodine including electrolyte and catholyte compositions, electrolyte membranes for electrochemical devices, and annealing methods of making these electrolytes and catholytes

A novel anode for a lithium battery cell is provided. The anode contains silicon nanoparticles embedded in a solid polymer electrolyte. The electrolyte can also act as a binder for the silicon nanoparticles. A plurality of voids is dispersed throughout the solid polymer electrolyte. The anode may also contain electronically conductive carbon particles. Upon charging of the cell, the silicon nanoparticles expand as take up lithium ions. The solid polymer electrolyte can deform reversibly in response to the expansion of the nanoparticles and transfer the volume expansion to the voids.

High capacity anodes

An optimal architecture for a polymer electrolyte battery, wherein one or more layers of electrolyte (e.g., solid block-copolymer) are situated between two electrodes, is disclosed. An anolyte layer, adjacent the anode, is chosen to be chemically and electrochemically stable against the anode active material. A catholyte layer, adjacent the cathode, is chosen to be chemically and electrochemically stable against the cathode active material.

High energy lithium battery with separate anolyte and catholyte layers

An electrode/electrolyte assembly that has a well-integrated interface between an electrode and a solid polymer electrolyte film, which provides continuous, ionically-conducting and electronically insulating paths between the films is provided. A slurry is made containing active electrolyte material, a liquefied, ionically-conductive first polymer electrolyte with dissolved lithium salt, and conductive additive. The binder may have been liquefied by dissolving in a volatile solvent or by melting. The slurry is cast or extruded as a thin film and dried or cooled to form an electrode layer that has some inherent porosity. A liquefied second polymer electrolyte that includes a salt is cast over the electrode film. Some of the liquefied second polymer electrolyte fills at least some of the pores in the electrode film and the rest forms an electrolyte layer on top of the electrode film. After solidifying by either drying or cooling, the dual-cast electrode assembly includes both an electrode with low porosity and an adjacent solid polymer electrolyte film. A lithium secondary battery that employs the novel electrode assembly is also provided.

Electrodes with solid polymer electrolytes and reduced porosity

When electrode films are prepared for lithium electrochemical cells, problems are often encountered in laminating the films with an appropriate intervening electrolyte layer. This presents a significant challenge because proper alignment of the three layers and complete lamination at the interfaces are crucial to good cell performance. Often lamination is imperfect with gaps and defects at the interfaces. The disclosure herein describes a method of casting or extruding a polymer electrolyte directly onto an electrode film to create an electrode assembly with a continuous, defect-free interface. In some arrangements, there is some slight intermixing of the layers at the interface. A complete cell can be formed by laminating two such electrode assemblies to opposite sides of an additional electrolyte or to one another.

Method of forming an electrode assembly

Nanostructured gel polymer electrolytes that have both high ionic conductivity and high mechanical strength are disclosed. The electrolytes have at least two domains&#x2014;one domain contains an ionically-conductive gel polymer and the other domain contains a rigid polymer that provides structure for the electrolyte. The domains are formed by block copolymers. The first block provides a polymer matrix that may or may not be conductive on by itself, but that can soak up a liquid electrolyte, thereby making a gel. An exemplary nanostructured gel polymer electrolyte has an ionic conductivity of at least 1&#xd7;10S cmat 25&#xb0; C.

Gel polymer electrolytes for batteries

Decorative novelty head wear is provided including a head engaging member adapted to be worn on a user's head and at least one decorative member mounted to the head engaging member and including a generally flat substrate having a decorative surface. The decorative head wear can include sports team logos, college mascots, slogans, corporate logos, or other decorative indicia. The decorative head wear can be manufactured inexpensively and packaged very easily and shipped economically since the head wear takes up little space and is very light in weight.

Novelty head gear and method of making same

An apparatus wherein a unitary housing includes a 'V' shaped slot defining an upper and lower planar wall, with an acute angle therebetween. The lower planar wall includes a blade member arranged essentially coextensively therewith, with the slot arranged for receiving a seat belt for emergency severing thereof. A plurality of hook and loop fasteners mounted to a first side wall of the housing is selectively and removably securable to a like plurality of hook and loop fasteners mounted to an associated seat belt. The organization may further include an illumination member mounted to a forward end wall of the housing operative through a switch for use with the organization during conditions of limited available light.

Growing community of inventors

Oakland, CA, United States of America

William Hudson