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Lithium-ion battery

A lithium-ion battery, ion conduction technology, applied in battery electrodes, secondary batteries, circuits, etc.

Inactive Publication Date: 2015-06-10
EI DU PONT DE NEMOURS & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the use of these compounds with stable manganese cathodes in Li-ion batteries has not been described

Method used

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Examples

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example

[0068] The subject matter disclosed herein is also defined in the following examples. It should be understood that, while describing various features of certain particular embodiments of the invention, these Examples are given by way of illustration only.

[0069] The meanings of the abbreviations used are as follows: "g" means gram, "mg" means milligram, "μg" means microgram, "L" means liter, "mL" means milliliter, "mol" means mole, "mmol "Refers to millimoles, "M" refers to molar concentration, "wt%" refers to weight percent, "mm" refers to millimeters, "ppm" refers to parts per million, "h" refers to hours, "min" means minutes, "Hz" means hertz, "mS" means millisiemens, "mA" means milliamps, "mAh / g" means milliamp hours per gram, "V" means volts, "xC" Refers to the constant current that can fully charge / discharge the cathode within 1 / x hour, "SOC" refers to the state of charge, "SEI" refers to the solid electrolyte interface formed on the surface of the electrode material,...

example 1-20

[0111] High temperature performance of full battery

[0112] Full cells comprising the anode, cathode and non-aqueous electrolyte shown in Table 2 were cycled between 1.9 and 3.4 V at the rate shown in Table 2 at 55°C until T80 was reached. The number of cycles at which T80 was reached is also shown in Table 2. As can be seen by comparing the cycle numbers in Table 2 with those in Table 1 (comparative example), the addition of the phosphate ester additive and the use of a stabilized manganese cathode resulted in higher cycle numbers.

[0113] Table 2

[0114] High temperature performance of full battery

[0115]

[0116]

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Abstract

A lithium ion battery that has a 5 V stabilized manganese cathode and a nonaqueous electrolyte comprising a phosphate additive is described. The lithium ion battery operates with a high voltage cathode (i.e. up to about 5 V) and has improved cycling performance at high temperature.

Description

[0001] This patent application claims priority and benefits under 35 U.S.C. §119(e) to U.S. Provisional Application 61 / 654,184, filed June 1, 2012, which is incorporated by reference in its entirety for all purposes as part of this article. technical field [0002] The invention relates to the field of lithium ion batteries. More specifically, the present invention relates to a lithium ion battery comprising a 5V stable manganese cathode and a nonaqueous electrolyte comprising a phosphate ester additive. Background technique [0003] Lithium-ion batteries have been active for hybrid electric vehicle (HEV) and plug-in hybrid electric vehicle (PHEV) applications. 4V spinel LiMn 2 o 4 and 3.4V olivine LiFePO 4 Both cathodes have attracted much attention in this regard because Mn and F e are cheap and environmentally friendly. Additionally, these cathodes offer higher rate characteristics and better safety than layered oxide cathodes. However, LiMn 2 o 4 and LiFePO 4 B...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/505H01M10/0525H01M10/0567H01M10/0569H01M4/485H01M4/587
CPCH01M4/485H01M4/505H01M10/0525H01M10/0567H01M10/0569H01M4/587H01M2300/0034H01M2300/0037H01M2004/028Y02E60/10H01M4/131H01M4/525
Inventor C.J.杜博伊斯V.A.佩特罗夫M.G.罗伊洛夫斯
Owner EI DU PONT DE NEMOURS & CO
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