H01M4/1399

METHOD AND SYSTEM FOR CONTINUOUS LAMINATION OF BATTERY ELECTRODES

Systems and methods for continuous lamination of battery electrodes may include a cathode, an electrolyte, and an anode, where the anode includes a current collector, a cathode, an electrolyte, and an anode, the anode comprising a polymeric adhesive layer coated onto the current collector, and an active material coated onto the polymeric adhesive layer such that the polymeric adhesive layer is arranged between the active material and the current collector, wherein the anode is subjected to a heat treatment to induce pyrolysis after application of the polymeric adhesive layer to the current collector and application of the active material to the polymeric adhesive layer, the heat being applied to the anode at a temperature between 500 and 850 degrees C.

Method for manufacturing positive electrode including conductive polymer layer selectively formed on surface of carbon layer disposed on current collector for power storage device, and method for manufacturing power storage device

A method for manufacturing a positive electrode for a power storage device includes the steps of: preparing a current collector that includes a first region and a second region on a surface of the current collector, the first region having a carbon layer formed on the surface, the second region having the surface exposed; and forming a conductive polymer layer selectively on a surface of the carbon layer by immersing the current collector in an electrolytic solution containing a raw material monomer and then conducting electrolytic polymerization of the raw material monomer.

Method for manufacturing positive electrode including conductive polymer layer selectively formed on surface of carbon layer disposed on current collector for power storage device, and method for manufacturing power storage device

A method for manufacturing a positive electrode for a power storage device includes the steps of: preparing a current collector that includes a first region and a second region on a surface of the current collector, the first region having a carbon layer formed on the surface, the second region having the surface exposed; and forming a conductive polymer layer selectively on a surface of the carbon layer by immersing the current collector in an electrolytic solution containing a raw material monomer and then conducting electrolytic polymerization of the raw material monomer.

Positive electrode for electrochemical device and electrochemical device, and method for manufacturing same

A positive electrode for electrochemical device includes a positive current collector and a positive electrode material layer supported on the positive current collector. The positive electrode material layer includes a positive electrode active material. The positive electrode active material includes an inner core portion containing polyaniline and a surface layer portion containing poly(3,4-ethylenedioxythiophene) and polythiophene. The inner core portion is fibrous or grain-aggregate, and the surface layer portion covers at least a part of the inner core portion. Furthermore, an electrochemical device includes the above-described positive electrode, a negative electrode including a negative electrode material layer that occludes and releases a lithium ion, and a nonaqueous electrolytic solution having lithium ion conductivity.

ELECTROCHEMICAL DEVICE AND METHOD FOR MANUFACTURING ELECTROCHEMICAL DEVICE

An electrochemical device of the present invention includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The positive electrode includes a positive current collector containing aluminum, a positive electrode material layer containing a conductive polymer, and an aluminum oxide layer disposed on a surface of the positive current collector. The aluminum oxide layer contains fluorine.

ELECTROCHEMICAL DEVICE AND METHOD FOR MANUFACTURING ELECTROCHEMICAL DEVICE

An electrochemical device of the present invention includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The positive electrode includes a positive current collector containing aluminum, a positive electrode material layer containing a conductive polymer, and an aluminum oxide layer disposed on a surface of the positive current collector. The aluminum oxide layer contains fluorine.

Composite Electrodes and Methods of Making the Same
20210075007 · 2021-03-11 ·

Disclosed herein is a composite electrode comprising a charge-conducting material, a charge-providing material bound to the charge-conducting material, and a plurality of single-walled carbon nanotubes bound to a surface of the charge-providing material. High-capacity electroactive materials that assure high performance are a prerequisite for ubiquitous adoption of technologies that require high energy/power density lithium (Li)-ion batteries, such as smart Internet of Things (IoT) devices and electric vehicles (EVs). Improved electrode performance and lifetimes are desirable. The disclosed electrode can have a Coulombic efficiency of 99% or greater, and a stable capacity retention after 100 cycles or more. Also disclosed herein are methods of making a composite electrode.

Composite Electrodes and Methods of Making the Same
20210075007 · 2021-03-11 ·

Disclosed herein is a composite electrode comprising a charge-conducting material, a charge-providing material bound to the charge-conducting material, and a plurality of single-walled carbon nanotubes bound to a surface of the charge-providing material. High-capacity electroactive materials that assure high performance are a prerequisite for ubiquitous adoption of technologies that require high energy/power density lithium (Li)-ion batteries, such as smart Internet of Things (IoT) devices and electric vehicles (EVs). Improved electrode performance and lifetimes are desirable. The disclosed electrode can have a Coulombic efficiency of 99% or greater, and a stable capacity retention after 100 cycles or more. Also disclosed herein are methods of making a composite electrode.

Electro-conductive polymers of halogenated para-aminophenol, and electrochemical cells employing same
10923723 · 2021-02-16 ·

Halogenation of para-aminophenol and polymerization of the halogenation product results in electro-conductive redox polymer. For example, the para-aminophenol is chlorinated or brominated in an acidic solution, and the halogenation product is polymerized upon increasing the pH and upon oxidation. The halogenation product can be polymerized during electro-deposition of a thin film upon an anode current collector from an electrolyte solution to produce a sensor electrode, and the halogenation product can be mixed with electro-conductive carbon material to produce electrode-active material for storage battery electrodes. For example, the sensor electrode has an electrochemical reduction potential and a charge-discharge cycle period inversely proportional to pH, and the storage battery electrodes are positive electrodes in a storage battery having zinc negative electrodes in a zinc salt electrolyte solution.

ELECTRODE ADDITIVES AND COATINGS FOR MINIMIZING CATHODE TRANSITION METAL DISSOLUTION

An electrode including an electrode active material and a ceramic hydrofluoric acid (HF) scavenger is provided. The ceramic hydrofluoric acid (HF) scavenger includes M.sub.2SiO.sub.3, MAlO.sub.2, M.sub.2OAl.sub.2O.sub.3SiO.sub.2, or combinations thereof, where M is lithium (Li), sodium (Na), or combinations thereof. Methods of making the electrode are also provided.