FIELD: physics.
SUBSTANCE: invention pertains to a lithium secondary battery, in particular to a high voltage battery with a cut-off voltage not more than 4.35V. According to the invention, the lithium secondary battery consists of a cathode (K), anode (A), a separator and an electrolyte. The electrolyte contains (a) a compound with a nitrile group, and (b) a compound with a reaction potential of 4.7 V or more.
EFFECT: improved high temperature cycling characteristics and safety of the battery, prevention of battery inflation and decrease of capacity efficiency in conditions of high-temperature (>80°C) storage.
14 cl, 11 dwg, 1 tbl, 16 ex
| Title | Year | Author | Number |
|---|---|---|---|
| LITHIUM SECONDARY BATTERIES WITH CUTOFF VOLTAGE MORE THAN 4,35 V | 2005 |
|
RU2325014C1 |
| ELECTRODE FOR SECONDARY LITHIUM BATTERY | 2005 |
|
RU2323505C1 |
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|
RU2308792C1 |
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|
RU2321924C1 |
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|
RU2326468C1 |
| FUNCTIONAL ELECTROLYTE ADDITIVES AND ELECTROCHEMICAL DEVICE CONTAINING SUCH ELECTROLYTE | 2006 |
|
RU2358361C1 |
| HIGH-CAPACITY SECONDARY LITHIUM BATTERY | 2005 |
|
RU2315395C1 |
| NEW ORGANIC-INORGANIC COMPOSITE POROUS FILM AND ELECTROCHEMICAL DEVICE APPLYING IT | 2005 |
|
RU2336602C1 |
| LITHIUM-IRON PHOSPHATE HAVING OLIVINE STRUCTURE AND METHOD FOR ANALYSIS THEREOF | 2009 |
|
RU2484009C2 |
| ORGANIC-INORGANIC COMPOSITE MICROPOROUS MEMBRANE AND ELECTROCHEMICAL DEVICE THEREOF | 2005 |
|
RU2364011C2 |
