Lithium-ion battery

A lithium-ion battery, ion conduction technology, applied in battery electrodes, secondary batteries, circuits, etc.
CN104704657AInactive Publication Date: 2015-06-10EI DU PONT DE NEMOURS & CO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
EI DU PONT DE NEMOURS & CO
Publication Date
2015-06-10
Estimated Expiration
Not applicable · inactive patent

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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.
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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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