New method for synthesizing porous layered LNMCO (333 material for short)

A technology of porosity and new method, applied in the field of porous layered LNMCO synthesis, can solve the problems of unstable structure, low discharge specific capacity, high price of cobalt, etc.

Inactive Publication Date: 2012-07-11
ZHUZHOU TAIHE HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention overcomes some deficiencies in the existing lithium battery cathode materials, such as: lithium cobalt oxygen: high price, cobalt is a toxic element, lithium manganese oxygen: low discharge specific capacity, poor high te

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  • New method for synthesizing porous layered LNMCO (333 material for short)
  • New method for synthesizing porous layered LNMCO (333 material for short)
  • New method for synthesizing porous layered LNMCO (333 material for short)

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Embodiment example

[0011] Prepare 0.1mol of Li (Ni 1 / 3 co 1 / 3 mn 1 / 3 )O 2 , Accurately weigh the acetate of lithium, cobalt, nickel and manganese, lithium acetate: nickel acetate: manganese acetate: = 1.0: 0.333: 0.333: 0.333 and take the standard weight (to make Li excessive in the solution, add Li Excessive, to add Li 2 co 3 0.5mol mmol), respectively dissolved in 30-50ml of distilled water, mixed well and added to the total solution of fluxing system resorcinol concentration 0.1-0.2mol, formaldehyde concentration 0.10-0.3mol, fixed on the constant temperature water bath, The temperature is controlled at 60-80°C, stirred with a magnetic stirrer until it becomes a paste, transferred to a vacuum drying oven and dried at a constant temperature of 90°C for 12-24 hours. Transfer the dried preparation material into a crucible, place it in a muffle furnace, heat it up from room temperature to 800-900°C for calcination and keep it for 12-18 hours, then anneal, the cooling rate is 10°C / min, and ...

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Abstract

The embodiment of the invention discloses a new method for synthesizing porous layered LNMCO (a 333 material for short). The method is characterized by comprising the following steps: preparing a mixed solution of lithium acetate, cobalt acetate, nickel acetate and manganese acetate, which contains 0.10-0.2mol of fluxing system of hydroquinone and formaldehyde; heating and condensing the mixed solution into a gel product which takes a formaldehyde resin (a phenolic condensation compound) as a carrier and contains a variety of salts; and calcining the gel product in the temperature of 800-900 DEG C, then annealing the gel product to 700 DEG, and preserving heat for 24h so as to obtain a foamy porous product. The porous layered LNMCO originates from 2001; the research on application of the porous layered LNMCO has been widely carried out; and the porous layered LNMCO is low in cost, low in toxicity, green and environment-friendly, high in specific energy and high in specific power and is an optimal substitute material for LiCo2.

Description

technical field [0001] The invention relates to a novel method for synthesizing porous layered LNMCO (abbreviated as 333 material), which is a lithium-ion battery material, in particular, the cathode material belongs to the technical field of lithium-ion batteries. Background technique [0002] As a secondary green battery, lithium-ion batteries have been widely used in many fields such as portable electronic devices, and have begun to expand the market for large-capacity batteries such as electric vehicles. Due to the low capacity and high cost of market-oriented cathode materials, it is difficult to meet the high-capacity and low-cost requirements of electronic products and equipment. In recent years, cathode materials with high capacity, low price and good cycle stability have attracted widespread attention. [0003] This material originated in 2001, and the applied research of LNMCO (referred to as 333 material) has been widely carried out. It has low cost, low toxicity,...

Claims

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Application Information

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IPC IPC(8): H01M4/505H01M4/525
CPCY02E60/122Y02E60/10
Inventor 郑圣泉陈红雨李中奇
Owner ZHUZHOU TAIHE HIGH TECH
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