METHOD FOR MODIFYING CATHODE MATERIAL AND LITHIUM BATTERY EMPLOYING THE CATHODE MATERIAL
First Claim
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1. A lithium battery, comprisinga cathode plate and an anode plate;
- a separator disposed between the cathode plate and the anode plate to define a reservoir region; and
an electrolyte filled in the reservoir region,wherein a thermal protective film is provided to cover a material of the cathode plate or the anode plate, and when a battery temperature rises over an onset temperature of the thermal protective film, the thermal protective film undergoes a crosslinking reaction to inhibit thermal runaway, thereby preventing combustion or an explosion of the lithium battery, wherein the onset temperature is between about 80°
C. and 280°
C.
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Abstract
The invention provides a lithium battery, including: a cathode plate and an anode plate; a separator disposed between the cathode plate and the anode plate to define a reservoir region; and an electrolyte filled in the reservoir region. A thermal protective film is provided to cover a material of the cathode plate or the anode plate. When a battery temperature rises over an onset temperature of the thermal protective film, it undergoes a crosslinking reaction to inhibit thermal runaway. A method for fabricating the lithium ion battery is also provided.
39 Citations
28 Claims
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1. A lithium battery, comprising
a cathode plate and an anode plate; -
a separator disposed between the cathode plate and the anode plate to define a reservoir region; and an electrolyte filled in the reservoir region, wherein a thermal protective film is provided to cover a material of the cathode plate or the anode plate, and when a battery temperature rises over an onset temperature of the thermal protective film, the thermal protective film undergoes a crosslinking reaction to inhibit thermal runaway, thereby preventing combustion or an explosion of the lithium battery, wherein the onset temperature is between about 80°
C. and 280°
C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for fabricating a lithium battery, comprising providing an electrode material powder;
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modifying the electrode material powder with a nitrogen-containing polymer to form a modified electrode material powder; forming a modified electrode plate comprising the modified electrode material powder, a conductive additive and a binder, wherein the nitrogen-containing polymer covers the modified electrode material powder; forming a lithium battery comprising the modified electrode plate; and activating the lithium battery by a charging operation to form a thermal protective film in the modified electrode plate. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification