Method for preparing anode material of metal oxide nano-sheet lithium ion battery

A technology for lithium-ion batteries and cathode materials, applied in battery electrodes, nickel oxide/nickel hydroxide, circuits, etc., can solve the problems of high equipment requirements and low output, and achieve simple preparation process, low difficulty, and broad application prospects Effect
CN101582500AActive Publication Date: 2009-11-18XIAMEN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAMEN UNIV
Publication Date
2009-11-18

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Abstract

A method for preparing an anode material of a metal oxide nano-sheet lithium ion battery relates to a metal oxide nano-sheet, in particular to a metal oxide nano-sheet applicable to the anode material of the lithium ion battery and a preparation method thereof. The invention provides a method for preparing the anode material of the metal oxide nano-sheet lithium ion battery, wherein the anode material has higher specific capability, better rate capability and longer cycle life. The method comprises the following steps of: preparing a solution A from soluble cobalt salt, soluble nickel salt or soluble manganese salt; dissolving a soluble lithium salt into water and adding a precipitant in the water, thus obtaining a solution B; adding the solution B in the solution A in a mixing state; subsequently adding an organic acid into the solution and stirring the solution, thus obtaining a mixture; stirring the mixture to be dry and obtaining a precursor powder; pre-calcining the obtained precursor powder; and taking out the pre-calcined precursor powder, grinding and sintering the pre-calcined precursor powder, thus obtaining the anode material of the metal oxide nano-sheet lithium ion battery.
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Description

technical field

[0001] The invention relates to a class of metal oxide nanosheets, in particular to a metal oxide nanosheet suitable for lithium-ion battery cathode materials and a preparation method thereof. Background technique

[0002] Due to the advantages of high output voltage, large specific energy, long cycle life, low pollution, small size, and light weight, lithium-ion batteries have been a hot spot in the field of energy materials research and social attention in the past 20 years. How to improve the charge and discharge rate and capacity of lithium-ion batteries and maintain a certain cycle life, the development of new electrode materials is a key issue.

[0003] At present, among the cathode materials of commercialized lithium-ion batteries, lithium iron phosphate has the fastest charge and discharge rate and the best rate performance. Due to its good cycle performance, good safety and excellent fast charge-discharge performance, this material has been attracti...

Claims

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