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multi-electrolyte electrochemical cell

An electrochemical and electrolyte technology, applied in non-aqueous electrolyte batteries, electrolytes, electrochemical generators, etc., can solve problems such as difficult to meet

Active Publication Date: 2011-12-07
SEEO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These requirements are particularly difficult to meet in lithium batteries due to the extreme reactivity of lithium itself

Method used

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Embodiment Construction

[0088] The ionic conductivity of each component of the battery can be determined. In general, the conductivity G is expressed as:

[0089] G = σA l , - - - ( 1 )

[0090] where σ is the ionic conductivity, A is the cross-sectional area, and l is the length. Two conductivities G in series 1 , G 2 Total conductivity G tot for:

[0091] G tot = G 1 G 2 G 1 + G 2 - - - ( 2 )

[0092] When the electrode assembly has a composite configuration, the ionic cond...

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Abstract

Electrode assemblies for use in electrochemical cells are provided. The negative electrode assembly comprises negative electrode active material and an electrolyte chosen specifically for its useful properties in the negative electrode. These properties include reductive stability and ability to accommodate expansion and contraction of the negative electrode active material. Similarly, the positive electrode assembly comprises positive electrode active material and an electrolyte chosen specifically for its useful properties in the positive electrode. These properties include oxidative stability and the ability to prevent dissolution of transition metals used in the positive electrode active material. A third electrolyte can be used as separator between the negative electrode and the positive electrode.

Description

[0001] Cross References to Related Applications [0002] This application claims U.S. Provisional Patent Application 61 / 028,443, filed February 13, 2008 (transformed into International Application PCT / US09 / 34156), U.S. Provisional Patent Application 61 / 046,685, filed April 21, 2008 (transformed into International Application PCT / US09 / 41180) and the priority of US Provisional Patent Application 61 / 112,605, filed November 7, 2008, the entire contents of which are incorporated herein by reference. [0003] This application is related to pending U.S. Provisional Patent Application 61 / 112596, filed November 7, 2008, entitled METHOD OF FORMING AN ELECTRODE ASSEMBLY, and entitled ELECTRODES WITH SOLID POLYMER ELECTROLYTES AND REDUCED, filed November 7, 2008 Priority to US Provisional Patent Application 61 / 112,592 to POROSITY, the contents of both are incorporated herein by reference. technical field [0004] The present invention relates generally to lithium batteries, and more part...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/60
CPCY02E60/122H01M2300/0094H01M10/052H01M10/0565H01M2/16H01M10/0566Y02E60/10
Inventor M·辛I·格尔H·B·埃陶尼N·P·巴尔萨拉
Owner SEEO
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