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A kind of strontium salt doped lithium nickel manganese oxide lithium ion battery cathode material preparation method

A lithium-ion battery, lithium nickel manganese oxide technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of poor electrical characteristics, complex process, difficult operation, etc., achieve high specific capacity, simple process, and low cost Effect

Inactive Publication Date: 2017-05-10
LIUZHOU HUILIN TECH +1
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  • Description
  • Claims
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Problems solved by technology

[0007] The object of the present invention is to provide a kind of strontium salt-doped nickel manganese oxide lithium lithium ion battery cathode material preparation method, solves the complicated process in the prior art, difficult to operate , high energy consumption, high cost, and poor electrical properties of the resulting product

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  • A kind of strontium salt doped lithium nickel manganese oxide lithium ion battery cathode material preparation method
  • A kind of strontium salt doped lithium nickel manganese oxide lithium ion battery cathode material preparation method
  • A kind of strontium salt doped lithium nickel manganese oxide lithium ion battery cathode material preparation method

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] A method for preparing a strontium salt-doped lithium nickel manganese oxide lithium ion battery cathode material, the method comprising the steps of:

[0019] A, the preparation of raw material: lithium salt material, manganese salt material, nickel salt material and strontium salt material, by lithium salt: manganese salt: nickel salt: strontium salt=10-30%: 20-60%: 20-40% : 2-10% mass percentage is accurately weighed, respectively dissolved in 300-500ml deionized water or acid to obtain the corresponding lithium salt solution, manganese salt solution, nickel salt solution and strontium salt solution;

[0020] B, reaction synthesis: Lithium salt, manganese salt, nickel salt, strontium salt solution are put into the container in the order of manganese salt, nickel salt, lithium salt, strontium salt, stirred at high speed for 3-6 hours u...

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Abstract

The invention relates to a method for preparing a strontium salt doped lithium nickel manganese oxide cathode material of a lithium ion battery. The method comprises the following steps: raw material preparation, reaction synthesis and high temperature sintering. The product of the method provided by the invention is a novel ternary metal oxide cathode material, and the material forms a lithium ion battery with Li or C to ensure high specific capacity, high rate capability and good cycle performance; moreover, the material is good in electrical property uniformity, simple in process, and low in cost and does not need complex and expensive preparation equipment.

Description

technical field [0001] The invention relates to the technical field of battery materials, in particular to a method for preparing a positive electrode material of a lithium ion battery with strontium salt doped lithium nickel manganese oxide. Background technique [0002] Spinel-type lithium nickel manganese oxide is developed on the basis of spinel-type lithium manganese oxide. Like lithium manganate, it is a positive electrode material with three-dimensional lithium ion channels. The reversible capacity is 146.7mAh / g. The difference is not big, but the voltage platform is about 4.7-5.1V, which is more than 20% higher than the 4V voltage platform of lithium manganate, and the cycle stability at high temperature is also qualitatively improved compared with the original lithium manganate . During the charge-discharge cycle of lithium-ion batteries, the Mn3+ ions in the lithium nickel manganese oxide material are easily dissolved in the ionic organic electrolyte solution, res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/505H01M4/525H01M4/131
CPCY02E60/10
Inventor 梁兴华刘于斯刘天骄华晓鸣史琳曾帅波叶超超宋清清刘浩
Owner LIUZHOU HUILIN TECH
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