Title:
再充電可能なリチウム-イオンバッテリーの過放電保護のためのレドックスシャトル
Document Type and Number:
Japanese Patent JP5053834
Kind Code:
B2
Abstract:
A battery of series-connected rechargeable lithium ion cells each of which contains a negative electrode; a negative electrode current collector; a positive electrode; a positive electrode current collector; and an electrolyte comprising charge carrying medium, lithium salt and cyclable redox chemical shuttle. The negative electrode has a larger i rreversible first cycle capacity loss than that of the positive electrode, and is driven to a potential above that of the positive electrode if the cell is discharged to a state of cell reversal. The shuttle has an electrochemical potential above the positive electrode maximum normal operating potential, and prevents the negative electrode potential from reaching even higher and more destructive positive values during overdischarge. The current collector has a lithium alloying potential below the negative electrode minimum normal operating potential. The battery chemically limits or eliminates cell damage due to repeated overdischarge, and may operate without electronic overdischarge protection circuitry.
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Inventors:
Dearne, Jeffrey Earl.
Chen, Jun
Chen, Jun
Application Number:
JP2007506558A
Publication Date:
October 24, 2012
Filing Date:
March 31, 2005
Export Citation:
Assignee:
3M INNOVATIVE PROPERTIES COMPANY
International Classes:
H01M10/0567; H01M2/34; H01M4/131; H01M4/48; H01M4/485; H01M4/58; H01M8/20; H01M10/052; H01M10/0525; H01M10/36; H01M10/42; H01M4/136; H01M4/1391; H01M4/587; H01M4/66; H01M10/44
Domestic Patent References:
| JP5258771A | ||||
| JP2189866A | ||||
| JP7094212A | ||||
| JP7078639A | ||||
| JP9017447A | ||||
| JP2000277147A | ||||
| JP7302614A | ||||
| JP2004006400A | ||||
| JP2001196061A |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Nagasaka Tomoyasu
Takashi Ishida
Tetsuji Koga
Nagasaka Tomoyasu