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LITHIUM POTASSIUM TANTALATE COMPOUNDS AS Li SUPER-IONIC CONDUCTOR, SOLID ELECTROLYTE AND COATING LAYER FOR LITHIUM METAL BATTERY AND LITHIUM-ION BATTERY

A lithium ion and electrolyte technology, applied in the field of lithium potassium tantalate compound as lithium superion conductor, solid electrolyte and coating used for lithium metal battery and lithium ion battery, can solve problems such as stability problems

Pending Publication Date: 2021-03-16
TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0025] As a result, many conventionally known solid Li-ion conductors suffer from stability issues when in contact with Li metal anodes.

Method used

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  • LITHIUM POTASSIUM TANTALATE COMPOUNDS AS Li SUPER-IONIC CONDUCTOR, SOLID ELECTROLYTE AND COATING LAYER FOR LITHIUM METAL BATTERY AND LITHIUM-ION BATTERY
  • LITHIUM POTASSIUM TANTALATE COMPOUNDS AS Li SUPER-IONIC CONDUCTOR, SOLID ELECTROLYTE AND COATING LAYER FOR LITHIUM METAL BATTERY AND LITHIUM-ION BATTERY
  • LITHIUM POTASSIUM TANTALATE COMPOUNDS AS Li SUPER-IONIC CONDUCTOR, SOLID ELECTROLYTE AND COATING LAYER FOR LITHIUM METAL BATTERY AND LITHIUM-ION BATTERY

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Embodiment Construction

[0064] Throughout this specification, the terms "electrochemical cell" and "battery" are used interchangeably unless the context of the specification clearly distinguishes between an electrochemical cell and a battery. Furthermore, the terms "solid electrolyte" and "solid ionic conductor" are used interchangeably unless expressly stated otherwise.

[0065] In the provided formulas, the term "less than" indicates all values ​​that are less than the stated numerical value. Thus, "less than" can mean a value up to 0.9 of the expressed value. For example, if the indicated value is 3, a value less than 3 may be 2.7. The term greater than 0 may mean that there is a positive amount, such amount may be as small as 0.01.

[0066] Ceder et al. (Nature Materials, 14, 2015, 1026-1031) have targeted the known Li + Ion conductor Li 10 GeP 2 S 12 and Li 7 P 3 S 11 describes the effective Li + Structural characterization of conducting lattices, where the sulfur sublattices of the tw...

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Abstract

Solid-state lithium ion electrolytes of lithium potassium tantalate based compounds are provided which contain an anionic framework capable of conducting lithium ions. An activation energy of the lithium metal silicate composites is from 0.12 to 0.45 eV and conductivities are from 10<-3> to 40 mS / cm at 300K. Compounds of specific formulae are provided and methods to alter the materials with inclusion of aliovalent ions shown. Lithium batteries containing the composite lithium ion electrolytes are also provided. Electrodes containing the lithium potassium tantalate based materials and batterieswith such electrodes are also provided.

Description

[0001] Names of parties to the joint research agreement [0002] The disclosure of this document is made under the authority of TOYOTA MOTORENGINEERING & MANUFACTURING NORTH AMERICA, INC., 6565 Headquarters Drive W1-3C, Plano, Texas 75024 , Plano, Texas, 75024)) and University of Maryland, College Park (address 20742, 2130 Mitchell Building, 7999 Regents Avenue, College Park, Maryland (2130 Mitchell Bldg. 7999 Regents Dr. College Park, Maryland, 20742)) The result of joint research work carried out under a joint research agreement. technical field [0003] The present disclosure relates to novel lithium potassium tantalate compounds useful as lithium superionic conductors, solid electrolytes containing the novel lithium potassium tantalate compounds, and lithium metal batteries and lithium ion batteries for use in containing the novel lithium potassium tantalate compounds electrode coating. Background technique [0004] Traditionally, lithium-ion batteries have dominated t...

Claims

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Application Information

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IPC IPC(8): H01M10/0562H01M10/0525H01M10/052H01M4/13
CPCH01M10/0562H01M10/0525H01M10/052H01M4/13H01M2300/0071H01M4/382H01M2300/0068H01M4/366H01M4/62Y02E60/10H01M2004/027H01M2004/028C01G35/006
Inventor 莫一非Q·白X·何凌晨
Owner TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA