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1. WO2020192167 - ANODE, AND ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE COMPRISING SAME

Publication Number WO/2020/192167
Publication Date 01.10.2020
International Application No. PCT/CN2019/122694
International Filing Date 03.12.2019
IPC
H01M 4/66 2006.01
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
64Carriers or collectors
66Selection of materials
CPC
H01M 10/0525
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
052Li-accumulators
0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
H01M 2004/021
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
021Physical characteristics, e.g. porosity, surface area
H01M 2004/027
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
026characterised by the polarity
027Negative electrodes
H01M 4/366
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
366as layered products
H01M 4/38
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
H01M 4/587
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
587for inserting or intercalating light metals
Applicants
  • NINGDE AMPEREX TECHNOLOGY LIMITED [CN]/[CN]
Inventors
  • WANG, Bin
  • WEN, Qian
  • ZHANG, Yibo
  • HU, Qiaoshu
Agents
  • LEE AND LI - LEAVEN IPR AGENCY LTD.
Priority Data
201910227266.225.03.2019CN
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ANODE, AND ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE COMPRISING SAME
(FR) ANODE ET DISPOSITIF ÉLECTROCHIMIQUE AINSI QUE DISPOSITIF ÉLECTRONIQUE LA COMPRENANT
Abstract
(EN)
An anode, an electrochemical device and an electronic device comprising the same are provided. Embodiments provided an anode comprising: a current collector (101), a first anode structure layer (102) and a second anode structure layer (103). The first anode structure layer (102) comprises a first framework material and the second anode structure layer (103) comprises a second framework material, wherein the first anode structure layer (102) is disposed between the current collector (101) and the second anode structure layer (103), and the first framework material has a higher oxidation-reduction potential for lithium ion or electronic conductivity than the second framework material. When the anode with double-layer structure provided is charged, the space utilization ratio of the anode can be enhanced, the rate capability of the electrochemical device can be enhanced, the formation of lithium dendrites may be inhibited, and the volume change amount of the anode can be reduced, thereby enhancing the safety performance and cycle performance of the electrochemical device.
(FR)
L'invention concerne une anode et un dispositif électrochimique ainsi qu'un dispositif électronique la comprenant. Des modes de réalisation de l'invention concernent une anode comprenant : un collecteur de courant (101), une première couche de structure d'anode (102) et une seconde couche de structure d'anode (103). La première couche de structure d'anode (102) comprend un premier matériau d'ossature et la seconde couche de structure d'anode (103) comprend un second matériau d'ossature, la première couche de structure d'anode (102) étant disposée entre le collecteur de courant (101) et la seconde couche de structure d'anode (103), et le premier matériau d'ossature a un potentiel d'oxydo-réduction plus élevé pour l'ion lithium ou la conductivité électronique que le second matériau d'ossature. Lorsque l'anode à structure double couche fournie est chargée, le rapport d'utilisation d'espace de l'anode peut être amélioré, la capacité de vitesse du dispositif électrochimique peut être améliorée, la formation de dendrites de lithium peut être inhibée, et la quantité de changement de volume de l'anode peut être réduite, ce qui permet d'améliorer les performances de sécurité et les performances de cycle du dispositif électrochimique.
Also published as
Latest bibliographic data on file with the International Bureau