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Synthesis method of nickel bisoxalate borate and application thereof

A bisoxalate boric acid and a synthesis method technology, applied in the field of electrochemical materials, can solve the problems of high price and poor performance, and achieve the effects of short reaction time, easy operation and simple reaction conditions

Inactive Publication Date: 2019-11-05
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most rapid development in recent years is the increasingly practical application of MHx~Ni batteries. Its advantages are non-toxic, green and pollution-free, and its storage capacity is 30% more than that of nickel-cadmium batteries. It is lighter than nickel-cadmium batteries and has a longer service life. The disadvantages are The price is more expensive than nickel-cadmium batteries, and the performance is worse than lithium batteries

Method used

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  • Synthesis method of nickel bisoxalate borate and application thereof
  • Synthesis method of nickel bisoxalate borate and application thereof
  • Synthesis method of nickel bisoxalate borate and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] S1, take by weighing 11.73 g oxalic acid, 2.88 g boric acid, 2.94 g nickel chloride;

[0024] S2. Heat and dry the weighed oxalic acid at 100°C for 3 h in vacuum, and heat and dry boric acid and nickel chloride at 65°C for 3 h without vacuum;

[0025] S3. Place the dried oxalic acid, boric acid, and nickel chloride in a round bottom flask, shake well (about 1 hour), press into tablets at 10 Mpa, transfer to a beaker, and place in a vacuum drying oven at 120 °C React for 30 min, vacuumize to 0.07 Mpa, and react for 12 h at a temperature of 150 °C to obtain a white solid;

[0026] S4, transfer the obtained white solid into 500 mL of acetonitrile, filter after stirring for 15 min, and evaporate the solvent of the obtained filtrate at 65°C to obtain about 6.8 g of nickel borate bisoxalate, with a conversion rate of about 68% and a purity of about 98.5%.

[0027] The infrared spectrogram of the nickel bisoxalate borate prepared by the present embodiment is shown in figure...

Embodiment 2

[0029] S1, take by weighing 19.33 g oxalic acid, 4.74 g boric acid, 1.99 g nickel chloride;

[0030] S2. Heat and dry the weighed oxalic acid at 110°C for 3 h in vacuum, and heat and dry boric acid and nickel chloride at 65°C for 3 h without vacuum;

[0031] S3. Put the dried oxalic acid, boric acid, and nickel chloride in a round bottom flask, shake well (about 1h), press into tablets at 10 Mpa, transfer to a beaker, react at 120°C for 45 minutes, and place in The vacuum was evacuated to 0.07 Mpa in a vacuum drying oven, and the temperature was set at 150 °C for 12 h to obtain a white solid.

[0032] S4. Transfer the obtained white solid to 500 mL of dimethyl carbonate, filter after stirring for 15 min, and evaporate the solvent from the obtained filtrate at 65°C to obtain about 9.48 g of nickel bisoxalate borate, and the primary conversion rate is about 63.2% , the purity is about 99%.

[0033] figure 2 The XRD spectrum of the nickel bisoxalate borate prepared in this ex...

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Abstract

The invention discloses a method for synthesizing nickel bisoxalate borate, and the method comprises the following steps: drying a certain amount of boric acid, oxalic acid and a nickel compound at ahigh temperature according to the stoichiometric ratio of each element in the nickel bisoxalate borate; uniformly mixing; tabletting; performing solid-solid reaction at a high temperature to obtain awhite solid; drying the white solid completely; extracting in a non-aqueous solvent; and finally evaporating and crystallizing the extract to obtain the final product nickel bisoxalate borate. The yield of the process route is over 60%, the product purity is over 98%, the reaction time is short, the reaction conditions are simple and easy to operate, and the industrial production is easy to realize.

Description

technical field [0001] The invention relates to the field of electrochemical materials, in particular to a method for synthesizing nickel bisoxalate borate and its application. Background technique [0002] At present, the relatively mature lithium-ion secondary battery has the advantages of high energy density, long cycle life, and small self-discharge. Equipped with power batteries (electric vehicles, submarines, etc.). However, the global lithium resources are not rich, the abundance in the earth's crust is only 0.006%, and the distribution is uneven, which will become a worry for large-scale application in the future. [0003] Nickel has good plasticity, corrosion resistance and magnetic properties, so it is mainly used in the fields of steel, nickel-based alloys, electroplating and batteries, and is widely used in various military manufacturing industries such as aircraft and radar, civil machinery manufacturing and Electroplating industry, etc. Plated nickel is also...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/02H01M4/62H01M10/0525H01M10/0568
CPCC07F5/022H01M4/62H01M10/0525H01M10/0568Y02E60/10
Inventor 李世友李文博崔孝玲李春雷韩亚敏杨莉王鹏王洁魏媛
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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