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Lithium nickel manganese oxide anode material and preparation method thereof

A positive electrode material, lithium nickel manganese oxide technology, applied in the field of lithium nickel manganese oxide positive electrode material and its preparation, can solve the problems of reducing material performance, difficulty in meeting practical applications, and low conductivity, so as to reduce energy consumption and eliminate nickel lithium Mixing phenomenon, the effect of uniform mixing

Inactive Publication Date: 2014-07-16
MCNAIR TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, nickel-lithium mixed row exists in the preparation process of lithium nickel manganese oxide, which reduces the performance of the material; and its electrical conductivity is low, which is difficult to meet the practical application

Method used

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  • Lithium nickel manganese oxide anode material and preparation method thereof
  • Lithium nickel manganese oxide anode material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh the nitrates of lithium, sodium, nickel, cobalt, and manganese respectively with a molar ratio of Li:Na:Ni:Mn=0.98:0.02:0.5:1.5, add an appropriate amount of ethanol to adjust the raw materials to rheological phase, stir at room temperature until dry, and put Calcined in a muffle furnace at 800°C for 16 hours to obtain the sodium-doped lithium nickel manganese oxide cathode material Li 0.98 Na 0.02 Ni 0.5 mn 1.5 o 4 .

Embodiment 2

[0033] Weigh the acetates of lithium, sodium, nickel, and manganese respectively at the molar ratio Li:Na:Ni:Mn=0.9:0.1:0.5:1.5, add an appropriate amount of ethanol to adjust the raw materials to rheological phase, stir at room temperature until dry, and then put Li 0.9 Na 0.1 Ni 0.5 mn 1.5 o 4 .

Embodiment 3

[0035] Weigh the nitrates of lithium, sodium, nickel and manganese respectively at the molar ratio Li:Na:Ni:Mn=0.9:0.1:0.5:1.5, add an appropriate amount of deionized water to adjust the raw materials to the rheological phase state, and stir at room temperature until dry. Put it into a muffle furnace and calcinate at 900°C for 24 hours to obtain the sodium-doped lithium nickel manganese oxide cathode material Li 0.9 Na 0.1 Ni 0.5 mn 1.5 o 4

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Abstract

The invention relates to the technical field of lithium ion batteries, and particularly relates to a lithium nickel manganese oxide anode material and a preparation method thereof. The chemical general formula of the lithium nickel manganese oxide anode material is Li1-xNaxNi0.5Mn1.5O4; compared with an existing lithium nickel manganese oxide anode material, the lithium nickel manganese oxide anode material provided by the invention not only has good cycling stability, but also has excellent rate capability.

Description

technical field [0001] The invention relates to the technical field of lithium ion batteries, in particular to a lithium nickel manganese oxide positive electrode material and a preparation method thereof. Background technique [0002] With the progress of the modern era, the miniaturization and multi-functionalization of electrical appliances continue, and the corresponding requirements for batteries are also increasing. Lithium-ion batteries have many advantages: high voltage platform, high specific capacity, long cycle life, low self-discharge, no memory effect, etc., and have great application prospects in electric vehicles and energy storage devices. [0003] At present, high specific energy, durability, high rate (fast charge and discharge capability), low cost, and safety have become the goals pursued by the development of lithium-ion batteries. Due to its specific capacity is LiCoO 2 With twice the specific capacity of the material, the lithium nickel manganese oxi...

Claims

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Application Information

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IPC IPC(8): H01M4/525H01M4/505H01M4/1391
CPCH01M4/505H01M4/525H01M4/626H01M10/0525Y02E60/10
Inventor 毛文峰张新河唐致远李中延郑新宇汤春微丁玉茹
Owner MCNAIR TECH