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1. WO2022018710 - MONOLITHIC PROTECTED LITHIUM CASSETTE ANODE

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Publication Number WO/2022/018710
Publication Date 27.01.2022
International Application No. PCT/IB2021/057404
International Filing Date 11.08.2021
IPC
H01M 4/13 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
13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
H01M 10/052 2010.1
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
CPC
H01M 12/065
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
12Hybrid cells; Manufacture thereof
04composed of a half-cell of the fuel-cell type and of a half-cell of the primary-cell type
06with one metallic and one gaseous electrode
065with plate-like electrodes or stacks of plate-like electrodes
H01M 12/08
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
12Hybrid cells; Manufacture thereof
08composed of a half-cell of a fuel-cell type and a half-cell of the secondary-cell type
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 4/134
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
134Electrodes based on metals, Si or alloys
H01M 4/382
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
381Alkaline or alkaline earth metals elements
382Lithium
Applicants
  • PRABAHARAN, Savari Rathinam Sahaya [IN]/[IN]
  • SESHADRI, Harinipriya [IN]/[IN]
  • SILUVAI MICHAEL, Michael Dason [IN]/[IN]
Inventors
  • PRABAHARAN, Savari Rathinam Sahaya
  • SESHADRI, Harinipriya
  • SILUVAI MICHAEL, Michael Dason
Agents
  • BRAHMA, Tigmakar Tapan Kumar
Priority Data
20204103123621.07.2020IN
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) MONOLITHIC PROTECTED LITHIUM CASSETTE ANODE
(FR) ANODE DE CASSETTE DE LITHIUM PROTÉGÉE MONOLITHIQUE
front page image
Abstract
(EN) A replaceable monolithic protected lithium cassette (PLC) anode for all solid-state lithium secondary cells (batteries), Li-air primary and secondary batteries and any other Lithium-based energy storage systems. The PLC anode (500) comprises a lithium ion conducting solid electrolyte substrate (501a), an ionically conducting buffer layer (502a) deposited on the substrate, a layer of metallic lithium (Li) deposited on the buffer layer (503a), and a protective metallic layer (504a) deposited in an enveloping manner covering the metallic Li layer (503a), the buffer layer (502a), and the top surface of the substrate (501a). The PLC anode prevents Li dendrite penetration; is stable in air and water, exhibits excellent heat resistance; can be utilized in aqueous and non-aqueous electrolytes for Li-air semi fuel cells; and the anode being replaceable allows continuous operation of cells. A process for fabrication of the PLC anode is also provided.
(FR) L'invention concerne une anode de cassette de lithium protégée monolithique remplaçable (PLC) pour tout les accumulateurs au lithium entièrement solides (batteries), les batteries primaire et secondaire au Li-air et tout autre systèmes de stockage d'énergie à base de lithium. L'anode PLC (500) comprend un substrat d'électrolyte solide conducteur d'ions lithium (501a), une couche tampon conductrice d'ions (502a) déposée sur le substrat, une couche de lithium métallique (Li) déposée sur la couche tampon (503a), et une couche métallique de protection (504a) déposée de manière enveloppante recouvrant la couche de Li métallique (503a), la couche tampon (502a) et la surface supérieure du substrat (501a). L'anode PLC empêche la pénétration de dendrites de Li ; est stable dans l'air et l'eau, présente une excellente résistance à la chaleur ; peut être utilisée dans des électrolytes aqueux et non aqueux pour des piles à semi-combustible Li-air ; et l'anode pouvant être remplacée permet un fonctionnement continu de cellules. L'invention concerne également un procédé de fabrication de l'anode PLC.
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