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Cathode material and lithium ion battery therefrom

一种阴极材料、阳极材料的技术，应用在电池电极、二次电池、电路等方向，能够解决降低容量等问题

Inactive Publication Date: 2013-10-30
COUNCIL OF SCI & IND RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared to Li / Li + Cut-off voltage above 4.3V gradually reduces capacity due to incompatible co-dopants

Method used

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  • Cathode material and lithium ion battery therefrom
  • Cathode material and lithium ion battery therefrom
  • Cathode material and lithium ion battery therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] Preparation of cathode material

[0100] LiMg 0.015 Cu 0.185 co 0.8 o 2 preparation of

[0101]LiMg was carried out by x Cu y co 1-x-y o 2 Synthesis of (0≤x,y≤0.2) materials: mixing stoichiometric amounts of anhydrous LiNO 3 (6.895g), Cu(NO 3 ) 2 .3H 2 O(4.469g), Mg(NO 3 ).6H 2 O(0.3846g) and Co(NO 3 ) 2 .4H 2 O (23.283g), then dissolved in 100ml triple distilled water. The resulting metal ion solution was continuously stirred at 300 rpm for 2 h under warm conditions (100 °C). The above concentrated solution was transferred to a porcelain dish and placed in the center of a microwave oven turntable (Kenstar, India 2450MHz, 1500W). The solution was irradiated for 35 minutes at full rated power (100% microwave power (2450 MHz microwave frequency)). During the reaction, the chemical components are heated rapidly, and a red glow appears within the disk throughout the reaction. After the reaction was complete, the product was dried in an oven for two hours...

Embodiment 2

[0103] Preparation of cathode material

[0104] LiMg 0.035 Cu 0.165 co 0.8 o 2 preparation of

[0105] LiMg was carried out by x Cu y co 1-x-y o 2 Synthesis of (x,y≥1) materials: mixing stoichiometric amounts of anhydrous LiNO 3 (6.895g), Cu(NO 3 ) 2 .3H 2 O(3.9864g), Mg(NO 3 ).6H 2 O(0.8674g) and Co(NO 3 ) 2 .4H 2 O (23.283g), then dissolved in triple distilled water (100ml). The resulting metal ion solution was continuously stirred under warm conditions (100 °C) for 2 hours (300 rpm). The above concentrated solution was transferred to a porcelain dish and placed in the center of a microwave oven turntable (Kenstar, India 2450MHz, 1500W). The solution was irradiated for 35 minutes at full rated power (100% microwave power (2450 MHz microwave frequency)). During the reaction, the chemical components are heated rapidly, and a red glow appears within the disk throughout the reaction. After the reaction was complete, the product was dried in an oven for two ho...

Embodiment 3

[0107] Preparation of cathode material

[0108] LiMg 0.049 Cu 0.151 co 0.8 o 2 preparation of

[0109] LiMg was carried out by x Cu y co 1-x-y o 2 Synthesis of (x≥0.1,y≤0.1) materials: mixing stoichiometric amounts of anhydrous LiNO 3 (6.895g), Cu(NO 3 ) 2 .3H 2 O(3.648g), Mg(NO 3 ).6H 2 O(1.2564g) and Co(NO 3 ) 2 .4H 2 O (23.283g), then dissolved in 100ml triple distilled water. The resulting metal ion solution was continuously stirred under warm conditions (100 °C) for 2 hours (300 rpm). The above concentrated solution was transferred to a porcelain dish and placed in the center of a microwave oven turntable (Kenstar, India 2450MHz, 1500W). The solution was irradiated for 30-40 minutes at full rated power (100% microwave power (2450 MHz microwave frequency)). During the reaction, the chemical components are heated rapidly, and a red glow appears within the disk throughout the reaction. After the reaction was complete, the product was dried in an oven for ...

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Abstract

A new high performing lithium ion cell having new carbon based anode and new dual doped layered cathode materials. The anode is a self standing carbon fibrous material and the cathode is a dual doped Lithium cobalt oxide of general formula LiMxNyCo1-x-yO2 (0.01=x, y=0.2) wherein M is a divalent alkaline earth metal cation and N is a divalent transition metal cation. Lithium ion cells of 2016 coin cells were assembled using the above materials deliver specific capacity of 60-85 mAhg-1 at 1C rate and exhibit excellent cycling stability of 90- 95% even after 200 cycles when cycled between 2.9-4.1V.

Description

field of invention [0001] The present invention relates to high voltage, high performance layered cathode material LiM x N y co 1-x-y o 2 , where x and y are positive values ​​(0.01≤x, y≤0.2), M and N are dopants, and M is a divalent alkaline earth metal cation, and N is a divalent transition metal cation, which is based on the currently used Microwave synthesis of lithium cobalt oxide materials for lithium rechargeable batteries. [0002] The present invention further relates to the cathode material LiM synthesized by the microwave heating method for lithium secondary batteries x N y co 1-x-y o 2 . [0003] The present invention also relates to a lithium-ion battery as an energy source for LED lighting, which comprises the aforementioned cathode material and a high-performance carbon paper anode material (that is, a microfibrous structure carbon sheet). Background of the invention [0004] In 1991, Sony announced new lithium secondary batteries called lithium ion b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0525H01M4/485H01M4/525H01M4/587H01M4/1391
CPCY02E60/122H01M4/525H01M10/0525H01M4/587H01M4/485H01M4/1391Y02E60/10C01G51/00H01M4/131H01M4/364H01M4/382H01M4/466C01D15/02H01M4/366
Inventor S·格普库马C·尼斯亚R·瑟如纳卡兰A·斯瓦山穆加姆S·K·德哈万R·B·梅塞尔P·H·马赫施瓦利
Owner COUNCIL OF SCI & IND RES
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