Preparation method of flower-like nickel oxide/carbon composite material

A carbon composite material, nickel oxide technology, applied in electrical components, battery electrodes, non-aqueous electrolyte batteries, etc., can solve the problems of complex preparation process, difficulty in industrial-scale production, high price, and achieve simple preparation process, environmental protection, material The effect of low preparation cost and huge potential commercial value

Pending Publication Date: 2021-02-23
河北零点新能源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Research reports have shown that compared with other transition metal oxides, NiO has the advantages of low potential, low cost, and low toxicity, and can be used as an anode material for lithium-ion batteries. Recent studies have shown that the conductivity of NiO alone is poor, and in During the charging and discharging process, its volume is easy to expand, causing a sharp decline in battery capacity. Therefore, people dope NiO with different shapes of carbon to improve the electrochemical performance of NiO. According to literature reports, people use graphene, carbon nanotubes, etc. Doping carbon with NiO in this shape leads to an improved composite material. Obviously, compared with NiO alone, the doping of these carbon materials greatly improves the electrochemical performance of NiO, but these new carbon materials generally have preparation processes. Complexity, high price and other obvious shortcomings, it is difficult to produce on an industrial scale

Method used

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  • Preparation method of flower-like nickel oxide/carbon composite material
  • Preparation method of flower-like nickel oxide/carbon composite material
  • Preparation method of flower-like nickel oxide/carbon composite material

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preparation example Construction

[0019] see Figures 1 to 3 , in the embodiment 1 of the present invention, a kind of preparation method of flower-shaped nickel oxide / carbon composite material, comprises the following steps: waste rubber is cleaned and processed into a block, and then the waste rubber block that has been processed is placed in the muffle furnace Calcined in the temperature range of 350°C for 5h, and soaked and filtered the obtained product with 3mol / L HCl solution, and then dried the obtained precipitate in an oven at 80°C for 6h, and the obtained product was designated as C, and then 1g C and 6g of nickel nitrate hexahydrate were dispersed and dissolved in 50mL of distilled water, ultrasonicated for 30 minutes, and then added a few drops of ammonia water to adjust the pH of the solution to 10. Afterwards, it was suction-filtered and dried, and the obtained precipitate was calcined in a muffle furnace at 350° C. for 5 hours to obtain a flower-shaped nickel oxide / carbon composite material.

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Embodiment 2

[0024] A method for preparing a flower-shaped nickel oxide / carbon composite material, comprising the following steps: cleaning waste rubber and processing it into blocks, and then placing the processed waste rubber blocks in a muffle furnace for calcination within a temperature range of 400°C 3h, then, the obtained product was soaked and filtered with 3mol / L HCl solution, after that, the obtained precipitate was dried in an oven at 80°C for 6h, and the obtained product was marked as C, after that, 1g of C and 6g of Nickel chloride hexahydrate was dispersed and dissolved in 50mL of distilled water, ultrasonicated for 30min, followed by adding a few drops of ammonia water to adjust the pH value of the solution to 10, and then the obtained solution was placed in a reaction kettle, heated at 150°C for 10h, and then Suction filter and dry, and calcinate the obtained precipitate in a muffle furnace at 350°C for 4 hours to obtain a flower-shaped nickel oxide / carbon composite material....

Embodiment 3

[0026] A method for preparing a flower-shaped nickel oxide / carbon composite material, comprising the following steps: cleaning waste rubber and processing it into blocks, and then placing the processed waste rubber blocks in a muffle furnace for calcination within a temperature range of 450°C 3.5h, then, the obtained product was soaked and filtered with 3mol / L HCl solution, after that, the obtained precipitate was dried in an oven at 80°C for 6h, and the obtained product was marked as C, after that, 1g of C was mixed with 6g Nickel acetate tetrahydrate was dispersed and dissolved in 50mL of distilled water, ultrasonicated for 30min, followed by adding a few drops of ammonia water to adjust the pH value of the solution to 10, and then the obtained solution was placed in a reaction kettle, heated at 140°C for 10h, and then Suction filter and dry, and calcinate the obtained precipitate in a muffle furnace at 350°C for 4 hours to obtain a flower-shaped nickel oxide / carbon composite...

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Abstract

The invention relates to the technical field of energy materials, and discloses a preparation method of a flower-like nickel oxide / carbon composite material, and the method is characterized in that the method comprises the following steps: A, preparing a proper amount of nickel acetate tetrahydrate, nickel chloride hexahydrate, nickel nitrate hexahydrate, waste rubber, concentrated hydrochloric acid and ammonia water for later use; B, cleaning the waste rubber, treating the waste rubber into blocks, calcining the treated waste rubber blocks in a muffle furnace, soaking and filtering the obtained product with a 3 mol / L HCl solution, and drying the obtained precipitate in a drying oven to obtain a product C. According to the invention, the preparation process is simple and environmentally friendly, the material preparation cost is low, large-scale commercial production can be achieved, meanwhile, the flower-like nickel oxide prepared through the method has wide application prospects in micron devices, and meanwhile the composite material prepared through the method shows good lithium storage performance, can be used as a lithium battery negative electrode material, and has huge potential commercial values.

Description

technical field [0001] The invention relates to the technical field of energy materials, in particular to a method for preparing a flower-shaped nickel oxide / carbon composite material. Background technique [0002] NiO is a special metal oxide, which has been widely used in the fields of catalysts, gas sensors, magnetic materials, and lithium-ion batteries. Recent studies have found that the performance of NiO is closely related to its morphology. Therefore, in order to improve the performance of NiO Performance, NiO particles with various morphologies have been prepared. [0003] Research reports have shown that compared with other transition metal oxides, NiO has the advantages of low potential, low cost, and low toxicity, and can be used as an anode material for lithium-ion batteries. Recent studies have shown that the conductivity of NiO alone is poor, and in During the charging and discharging process, its volume is easy to expand, causing a sharp decline in battery ca...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H01M4/36H01M4/52H01M4/62H01M10/052
CPCH01M4/362H01M4/523H01M4/62H01M4/625H01M10/052Y02E60/10
Inventor王辉乔艳红王怀悦
Owner河北零点新能源科技有限公司