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1. WO2021126536 - METHOD AND SYSTEM FOR MULTIPLE CARBON PRECURSORS FOR ENHANCED BATTERY ELECTRODE ROBUSTNESS

Publication Number WO/2021/126536
Publication Date 24.06.2021
International Application No. PCT/US2020/063027
International Filing Date 03.12.2020
IPC
H01M 4/583 2010.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of, or comprising, active material
36Selection of substances as active materials, active masses, active liquids
58of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
583Carbonaceous material, e.g. graphite-intercalation compounds or CFx
CPC
C01B 32/00
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
32Carbon; Compounds thereof
H01M 4/0471
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
04Processes of manufacture in general
0471involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis
H01M 4/13
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
H01M 4/364
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
36Selection of substances as active materials, active masses, active liquids
362Composites
364as mixtures
H01M 4/386
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
36Selection of substances as active materials, active masses, active liquids
38of elements or alloys
386Silicon or alloys based on silicon
H01M 4/583
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
36Selection of substances as active materials, active masses, active liquids
58of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
583Carbonaceous material, e.g. graphite-intercalation compounds or CFx
Applicants
  • ENEVATE CORPORATION [US]/[US]
Inventors
  • ANSARI, Younes
  • CANTON, Giulia
  • BONHOMME, Frederic
  • PARK, Benjamin
Agents
  • MICHEL, Erick J.
Priority Data
16/719,69218.12.2019US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND SYSTEM FOR MULTIPLE CARBON PRECURSORS FOR ENHANCED BATTERY ELECTRODE ROBUSTNESS
(FR) PROCÉDÉ ET SYSTÈME POUR PRÉCURSEURS DE CARBONE MULTIPLES POUR UNE SOLIDITÉ RENFORCÉE D’ÉLECTRODES DE BATTERIES
Abstract
(EN) Systems and methods for multiple carbon precursors for enhanced battery electrode robustness may include an electrode having an active material on a current collector, the active material including two or more carbon precursor materials, and an additive, wherein the carbon precursor materials have different pyrolysis temperatures. A battery may include the electrode. The carbon precursor materials may include polyimide (PI) and polyamide-imide (PAI). The active material may be pyrolyzed at a temperature such that a first carbon precursor material is partially pyrolyzed and a second carbon precursor material is completely pyrolyzed. The carbon precursor materials may include two or more of PI, PAI, carboxymethyl cellulose (CMC), styrene-butadiene rubber (SBR), polyacrylonitrile (PAN), and sodium alginate. The active material may include silicon constituting at least 50% of weight of a formed anode after pyrolysis. The active material may include silicon constituting up to 97% of weight of a formed electrode after pyrolysis.
(FR) L’invention concerne des systèmes et des procédés pour des précurseurs de carbone multiples pour une solidité renforcée d’électrodes de batteries qui peuvent inclure une électrode ayant un matériau actif sur un collecteur de courant, le matériau actif incluant deux matériaux précurseurs de carbone ou plus, et un additif. Les matériaux précurseurs de carbone ont des températures de pyrolyse différentes. Une batterie peut inclure l’électrode. Les matériaux précurseurs de carbone peuvent inclure du polyimide (PI) et du polyamide-imide (PAI). Le matériau actif peut être pyrolysé à une température telle qu’un premier matériau précurseur de carbone est partiellement pyrolysé et qu’un deuxième matériau précurseur de carbone est complètement pyrolysé. Les matériaux précurseurs de carbone peuvent inclure deux éléments ou plus parmi du PI, du PAI, de la carboxyméthylcellulose (CMC), du caoutchouc styrène-butadiène (SBR), du polyacrylonitrile (PAN), et de l’alginate de sodium. Le matériau actif peut inclure du silicium constituant au moins 50 % en poids d’une anode formée après pyrolyse. Le matériau actif peut inclure du silicium constituant jusqu’à 97 % en poids d’une électrode formée après pyrolyse.
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