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Battery electrode paste composition

A battery electrode and composition technology, which is applied in the field of electrode slurry composition of lithium batteries, can solve the problems of low electrolyte, easy breakage, production pass rate, loss, etc., and achieve the effect of reducing battery impedance and improving battery capacity

Active Publication Date: 2016-07-06
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, unreacted maleimide and barbituric acid may dissociate and combine with the electrode binder, destroying the original softness and toughness of the electrode binder, so it is easy to cause brittle cracking of the positive electrode, which makes the high-density rolling It is easy to break when it is pressed and wound into a battery core, resulting in low production pass rate and electrolyte consumption, resulting in a decrease in capacitance

Method used

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Examples

Experimental program
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Effect test

Synthetic example 1

[0049] Synthesis example 1: Preparation of lithium cobalt oxide modified by silane coupling agent

[0050] Lithium cobalt oxide (LiCoO 2 ): 3-aminopropyltriethoxysilane (APTES): n-hexane mixed in a weight ratio of 87.00:0.02:12.98, react the above mixture at 70°C for about 1 hour, then raise the temperature to 105°C for another 1 hour, Finally, the temperature was raised to 190° C. and reacted for 1 hour to obtain the primary product of lithium cobalt oxide modified by silane coupling agent. The primary product of lithium cobalt oxide modified by the above-mentioned silane coupling agent was washed three times with n-hexane, and then baked in an oven at 110°C for 2 to 3 hours to obtain the final purified product, which is the modified silane coupling agent. The powder of lithium cobalt oxide.

Synthetic example 2

[0051] Synthesis Example 2: Preparation of lithium ternary oxide modified by silane coupling agent

[0052] The lithium ternary oxide (LiNi 0.5 co 0.2 mn 0.3 o 2 ): 3-aminopropyltriethoxysilane (APTES): n-hexane mixed in a weight ratio of 87.00:0.02:12.98, react the above mixture at 70°C for about 1 hour, then raise the temperature to 105°C for another 1 hour, Finally, the temperature was raised to 190° C. and reacted for 1 hour to obtain the primary product of lithium ternary oxide modified by silane coupling agent. The primary product of lithium ternary oxide modified by the above-mentioned silane coupling agent is washed three times with n-hexane, and then baked in an oven at 110°C for 2 to 3 hours to obtain the final purified product, which is silane coupling. Agent-modified lithium ternary oxide powder.

Synthetic example 3

[0053] Synthesis example 3: Preparation of lithium nickel cobalt aluminum oxide modified by silane coupling agent

[0054] Mix lithium nickel cobalt aluminum oxide (NCA): 3-aminopropyltriethoxysilane (APTES): n-hexane at a weight ratio of 87.00:0.02:12.98, and react the above mixture at 70°C for about 1 hour, Raise the temperature to 105°C for another 1 hour, and finally raise the temperature to 190°C for another 1 hour to obtain the primary product of lithium-nickel-cobalt-aluminum oxide modified by the silane coupling agent. The primary product of lithium nickel cobalt aluminum oxide modified by the above silane coupling agent is washed three times with n-hexane, and then baked in an oven at 110°C for 2 to 3 hours to obtain the final purified product, which is silane coupling. Agent modified lithium nickel cobalt aluminum oxide powder.

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Abstract

The invention relates to a battery electrode paste composition, containing a silane coupling agent-modified active substance, that contains a silane coupling agent-modified active substance, a conductive additive, an adhesive, and a maleimide additive. This composition may provide better battery safety and longer cycle life.

Description

technical field [0001] The invention relates to a battery electrode slurry composition, in particular to an electrode slurry composition for a lithium battery. Background technique [0002] In recent years, 3C electronic products, such as notebook computers, foldable mobile phones, digital cameras and video cameras, have developed in the direction of lightness, thinness, shortness and smallness, which has become the trend of electronic technology and communication products, further increasing the energy supply device "secondary battery" demand. In contrast, the demand and specifications of secondary batteries are also developing towards thinner, smaller size and lighter weight. At the same time, in order to meet the requirements of diversified functions, high speed, high performance and high power of electronic products, the demand for the capacitance of secondary batteries is also gradually increasing. [0003] Generally speaking, the energy density of lithium-ion batteri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M4/525H01M4/505H01M4/485H01M10/0525
CPCH01M4/485H01M4/505H01M4/525H01M4/628H01M10/0525H01M4/131H01M4/1391H01M4/622H01M4/625H01M10/052H01M4/62H01M4/5825Y02E60/10
Inventor 潘金平吴弘俊方家振李仁杰王宗雄陈振崇叶定儒李昱翰赖冠霖罗仁志许荣木杨长荣
Owner IND TECH RES INST
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