Prepn. method of anode material LiMn2O4 for high-performance Lithium ion battery
A lithium-ion battery and cathode material technology, applied in the field of preparation of high-performance lithium-ion battery cathode materials, can solve the problems of long time, unsatisfactory product performance indicators, high synthesis temperature, etc., and achieve excellent performance, short synthesis time and simple process Effect
Inactive Publication Date: 2002-12-04
WUHAN UNIV
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Problems solved by technology
The methods disclosed in other documents either have a high synthesis temperature and a long time, or the performance indicators of the resulting product are not ideal
Method used
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[0017] Accurately weigh MnO 2 348g, LiOH·H 2 O 84g, ball milling and mixing in a ball mill for 15-20 minutes, put the mixture in a mold, press it into a block on an oil press, place it in a high-temperature furnace for heating, and sinter in sections at 600°C to 800°C for a total of 36 hours, after cooling Take out the pulverized ball mill, and pass through a 300-mesh sieve to obtain LiMn for lithium-ion batteries. 2 o 4 Cathode material. Collect and seal for later use.
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The materials including MnO2, MnCO3, Mn(No3)2 or Mn(CH3COO)2, and LiOH, Li2CO3 or LiNO3 in the Li / Mn ratio of 0.45-0.5 are mixed, pressed into block and high-temperature synthezized to produce the anode material. The LiMn2O3 material produced has a specific capacity of 120 mA.hr / g, operation potential of 4.15-3.7 v and a production cost of only 4.5% that of LiCoO2 material. It may be used as the first-selected anode material of lithium ion battery.
Description
technical field [0001] The invention relates to a preparation method of a high-performance lithium-ion battery cathode material, which belongs to the technical fields of electrochemistry, inorganic synthesis and electronic products. Background technique [0002] Lithium-ion batteries are the latest generation of high-energy chemical power sources that stand out in recent years. As soon as they appear, they are widely used in mobile communications, portable computers, video cameras, cameras, portable instruments and other fields due to their strong vitality. The preferred supporting power supply for electric vehicles. In the development and manufacturing process of lithium-ion batteries, the preparation of cathode materials is one of the key technologies. Research institutions and battery manufacturers in various countries have invested a lot of manpower and material resources in the development of various positive electrode materials with large capacity and high potential. ...
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IPC IPC(8): C01B13/14C01D15/00C01G99/00H01M4/04H01M4/48H01M4/50H01M4/505H01M10/0525H01M10/36
CPCH01M4/505H01M10/0525Y02E60/10
Inventor 李升宪艾新平杨汉西胡晓宏范玉璋
Owner WUHAN UNIV