[Technology Development Unit] The 18th Institute of China Electronics Technology Group Corporation
[Technical introduction] Nickel-nickel-cobalt-manganese-lithium cathode materials not only greatly reduce the amount of cobalt used for scarce resources, and reduce the cost of the battery, but also combine the respective advantages of lithium cobaltate, lithium nickelate and lithium manganate battery materials. Comparing to lithium cobalt oxide cathode materials that dominate the market, nickel oxide, cobalt, manganese lithium cathode materials have higher grammetric capacity, better safety and cycle stability, and lower cost, and are the most energy-efficient lithium ion batteries. Potential new cathode materials. The 18th Research Institute of China Electronic Science and Technology Corporation has successfully completed the project of "Development of Lithium-ion Cobalt-manganese-oxide Lithium-ion Battery Preparation Technology for Military Lithium Ion Batteries." It has become a high-end supplier of cathode materials for lithium-ion batteries in China. The nickel-cobalt-manganese-lithium cathode material specifications are at the leading position in China and are close to or have reached the international advanced level.
【Main Specifications】
Batch production of nickel oxide, cobalt, manganese and lithium
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name
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Actual test value
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Physical indicators
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Exterior
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Black solid powder
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Morphology
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spherical
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Tap density (g/cm3)
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2.50
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Specific surface area (m2/g)
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0.39
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Particle size distribution D50(um)
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10.56
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Chemical index
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Impurity content (%)
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Cu:0.0001
Si: 0.0002
Fe:0.0041
Al: 0.0002
Ca: 0.002
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pH value
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10.24
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Body content (%)
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7.23
60.52
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Electrochemical performance
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Initial capacity (mAh/g)
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185(4.8V)
160 (4.3V)
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First charge and discharge efficiency (%)
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92
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10 cycles (mAh/g)
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160
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Cycle performance (2.75-4.3V)
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[email protected]%
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Other performance
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High and low temperature performance Good safety performance meets requirements
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[technical features]
(1) pH control technology: In the material synthesis reaction process, a multi-stage PH value control technology is used to monitor the PH value of different process flow points, establish the relationship between the pH value and the structure properties of the intermediate product, and achieve strict control of the product structure. The purpose of crystallinity and performance;
(2) Grain size control technology: After determining the appropriate process specification, a reasonable stirring rate and a unique stirring pattern are selected through experiment optimization to ensure that the intermediate particle size of the material is adjustable and the synthesized precursor material is guaranteed. High performance
(3) Efficiency improvement technology: The use of a scroll-type high-speed mixing process has been developed to greatly improve the mixing effect of nickel-cobalt-manganese precursor and lithium carbonate, and the mixing time has been significantly reduced, thereby laying the foundation for the expansion of mass production;
[Scope of application] Consumer electronics products such as mobile phones, notebook computers, video recorders, and mobile power supplies; energy storage power systems; hybrid electric vehicles, pure electric vehicles, etc., which can satisfy most PHEV-10 (plug-in hybrid vehicles) ) Requirements.
[patent status] 1 authorized patent
[technical status] batch production stage
【cooperation method】
(1) Customer needs. The technical indicators of nickel-nickel-cobalt-manganese-manganese-lithium cathode material produced by the 18th Research Institute of China Electronic Science and Technology Corporation are at the leading position in the country and are close to or reach the international advanced level. The current production capacity is 800 tons/year, and it has such a large scale as Lishen Battery Co., Ltd. At the same time, customers actively seek and welcome high quality battery manufacturers at home and abroad for trial and order.
(2) Cooperative research and development. Battery manufacturers such as Lishen Battery Co., Ltd. jointly develop new battery technologies, energy storage power systems, and power lithium-ion batteries for electric vehicles.
[Expected benefits] Calculated based on an annual production capacity of 800 tons, the current unit price is 165,000 yuan/ton, and the calculation can realize an output value of 132 million yuan, with a profit and tax of 102.932 million yuan.
