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Cadmium lithium phosphate material and synthetic method thereof

A technology of lithium cadmium phosphate and cadmium nitrate, which is applied in the directions of phosphorus compounds, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of few preparation methods of lithium cadmium phosphate, immature preparation methods, and application technology bottlenecks, and achieves low production cost. , mild conditions, obvious effect of granularity

Active Publication Date: 2018-02-09
天富(连云港)食品配料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] But currently for lithium cadmium phosphate (LiCdPO 4 ) studies are relatively few, only ELAMMARI L and ELOUADI B are equal to 1988 using Li 2 CO 3 , CdCO 3 , (NH 4 ) 2 HPO 4 Lithium cadmium phosphate (LiCdPO 4 ), and carried out structural studies, and in 1992 through X-ray diffraction data on lithium cadmium phosphate (LiCdPO 4 ) was re-refined
However, lithium cadmium phosphate (LiCdPO 4 ) preparation methods are still less, and the preparation methods are immature, resulting in technical bottlenecks in the application of this material

Method used

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  • Cadmium lithium phosphate material and synthetic method thereof
  • Cadmium lithium phosphate material and synthetic method thereof
  • Cadmium lithium phosphate material and synthetic method thereof

Examples

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Effect test

Embodiment 1

[0026] A kind of method utilizing sol-gel method to prepare lithium cadmium phosphate material, comprises the following steps:

[0027] S1, lithium hydroxide (LiOH·H 2 O), cadmium nitrate (Cd(NO 3 ) 2 4H 2 O), phosphoric acid (H 3 PO 4 ) and ethylene glycol (C 2 h 6 o 2 ) take by weighing 1.6784g, 12.3389g, 3.9201g and 4.9657g respectively, then in phosphoric acid, add 50ml distilled water to obtain phosphoric acid solution, add 100ml distilled water after cadmium nitrate and ethylene glycol are mixed and dissolve and obtain the ethylene glycol solution of cadmium nitrate, Dissolve lithium hydroxide with 50ml of distilled water to obtain a lithium hydroxide solution, then drop the ethylene glycol solution of cadmium nitrate into the phosphoric acid solution, while stirring continuously to obtain a mixed solution A, and finally add the lithium hydroxide solution dropwise to the mixed solution A In, and carry out stirring constantly, obtain mixed solution;

[0028] S2. ...

Embodiment 2

[0033] The preparation method is the same as that of Example 1, except that the calcination temperature of the xerogel powder in the muffle furnace is 600°C.

Embodiment 3

[0035] The preparation method is the same as in Example 1, except that the calcination temperature of the xerogel powder in the muffle furnace is 700°C.

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Abstract

The invention discloses a cadmium lithium phosphate material and a synthetic method thereof, and relates to the technical field of synthesis of inorganic materials. The method comprises the followingsteps: weighing lithium hydrate, cadmium nitrate, phosphoric acid and ethylene glycol according to ratio of 1: 1: 1: 2; then adding distilled water to dissolve and mix the components to obtain a mixedsolution; carrying out water-bath heating on the mixed solution and stirring by using a stirrer to obtain wet gel; drying the wet gel to obtain dry gel; grinding the dry gel and calcining the dry gelin a muffle furnace under the protection of activated carbon powder; and grinding the calcined gel to obtain a cadmium lithium phosphate sample. The cadmium lithium phosphate material is synthesizedby a sol-gel method, a preparation process is simple to operate, preparation conditions are gentle, costs are low, the synthesized cadmium lithium phosphate material is good in degree of crystallinity, good in dispersibility and stable in structure, the magnetic property of the cadmium lithium phosphate material prepared under the calcining conditions that the temperature is 800 DEG C and the timelasts for 12 hours is the best, and the application prospect is good.

Description

technical field [0001] The invention relates to the technical field of inorganic material synthesis, in particular to a lithium cadmium phosphate material and a synthesis method thereof. Background technique [0002] The development and utilization of energy are closely related to the development of human society. With the advancement of science and technology, lithium-ion batteries have attracted extensive research because of their advantages such as high-density energy, long cycle life, low self-discharge rate, and green and pollution-free. Among them, LiMPO as the anode material 4 (M=Fe, Co, Mn, V, etc.) have entered everyone's field of vision with the advantages of high specific capacity and low price. With the LiMPO 4 type anode material research, with similar LiXPO 4 Substances with molecular formulas have attracted attention, including lithium lithium phosphate (LiBaPO 4 ), lithium calcium phosphate (LiCaPO 4 ), lithium magnesium phosphate (LiMgPO 4 ), lithium s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/45
CPCC01B25/45C01P2002/72C01P2004/03C01P2004/61
Inventor 林卿杨芳苏凯敏陈鹤年何云
Owner 天富(连云港)食品配料有限公司
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