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Method for directly growing nickel oxide and cobalt oxide and complex energy storage material thereof on titanium substrate

A technology of energy storage materials and titanium substrates, applied in metal material coating technology, electrolytic coating, liquid chemical plating, etc., can solve the problems of high precision requirements, complex experimental conditions, poor cycle performance, etc., and achieve precision The effect of low requirements, superior energy storage performance, and simple experimental conditions

Inactive Publication Date: 2012-10-10
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are mainly two methods for growing NiO and CoO active materials on titanium substrates: electrochemical deposition method and chemical water bath deposition method. The electrode material is not stable enough, and the cycle performance is poor; the chemical water bath precipitation method is realized by a simple precipitation reaction, and the operation is simple, but the grown product film is not firmly bonded to the substrate, which greatly reduces its performance in terms of energy storage

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  • Method for directly growing nickel oxide and cobalt oxide and complex energy storage material thereof on titanium substrate
  • Method for directly growing nickel oxide and cobalt oxide and complex energy storage material thereof on titanium substrate
  • Method for directly growing nickel oxide and cobalt oxide and complex energy storage material thereof on titanium substrate

Examples

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Embodiment 1

[0030] A method for directly growing a NiO nanowire film on a titanium substrate, comprising the following steps:

[0031] a. Treatment of titanium substrate: ultrasonically clean the titanium sheet in dilute hydrochloric acid, absolute ethanol and deionized water for 5-10 minutes respectively, use the cleaned and dried titanium sheet as the anode, and place the platinum sheet as the cathode in 0.05-0.5mol / L of HF solution, react at room temperature for 1.0h at a voltage of 10-30V, and prepare TiO on the surface of the titanium substrate. 2 NT, and then the resulting TiO 2 NT was calcined in a nitrogen atmosphere for 3h at a temperature of 400-500°C to improve the TiO 2 Conductivity of NT;

[0032] b. Soak the titanium sheet treated in step a in citric acid solution (PH=1.5) for 12-24 hours.

[0033] c. Ni salt solution: dissolve a certain amount of nickel nitrate hexahydrate in deionized water, stir for 10 minutes, and prepare a nickel nitrate solution of 0.02mol / L~0.08mo...

Embodiment 2

[0039] A method for directly growing a CoO nanorod film on a metal titanium substrate, comprising the following steps:

[0040] a. Treatment of titanium substrate: ultrasonically clean the titanium sheet in dilute hydrochloric acid, absolute ethanol and deionized water for 5-10 minutes respectively, use the cleaned and dried titanium sheet as the anode, and place the platinum sheet as the cathode in 0.05-0.5mol / L of HF solution, react at room temperature for 1.0h at a voltage of 10-30V, and prepare TiO on the surface of the titanium substrate. 2 NT, and then the resulting TiO2 NT was calcined in a nitrogen atmosphere for 3h at a temperature of 400-500°C to improve the TiO 2 Conductivity of NT;

[0041] b. Soak the titanium substrate treated in step a in a citric acid solution (PH=1.5) for 12-24 hours.

[0042] c. Co salt solution: dissolve a certain amount of cobalt nitrate hexahydrate in deionized water, stir for 10 minutes, and prepare 0.02mol / L~0.08mol / L cobalt nitrate s...

Embodiment 3

[0048] A method for directly growing nickel-cobalt oxide (NiO-CoO) composite nanowires on a metal titanium substrate, comprising the following steps:

[0049] a. Treatment of titanium substrate: ultrasonically clean the titanium sheet in dilute hydrochloric acid, absolute ethanol and deionized water for 5-10 minutes respectively, use the cleaned and dried titanium sheet as the anode, and place the platinum sheet as the cathode in 0.05-0.5mol / L of HF solution, react at room temperature for 1.0h at a voltage of 10-30V, and prepare TiO on the surface of the titanium substrate. 2 NT array, and then the resulting TiO 2 The NT array was calcined in a nitrogen atmosphere for 3h at a temperature of 400-500°C to improve the TiO 2 Conductivity of NT;

[0050] b. Soak the titanium substrate obtained in a. in a citric acid solution of Ph=1.5 for 12 to 24 hours;

[0051] c. Ni, Co salt solution: dissolve a certain amount of nickel nitrate hexahydrate and cobalt nitrate hexahydrate in d...

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Abstract

The invention discloses a method for directly growing nickel oxide and cobalt oxide and a complex energy storage material thereof on a titanium substrate. The method comprises the following steps of: growing a titanium dioxide nanotube on the surface of the titanium substrate by an anodic oxidation method; soaking in a citric acid solution to further increase the hydroxyl concentration of the wall of the titanium dioxide nanotube; putting the prepared transition metal solution and the treated titanium substrate into a reaction kettle, and performing hydrothermal reaction; and roasting the reacted titanium substrate in N2 atmosphere to obtain a product. Experimental conditions are simple, the requirement on the precision of an experimental instrument is low, the method is easy to operate, and the grown product film is uniform, is stably combined with the titanium substrate and has high energy storage performance, so the method is suitable for preparing the energy storage material taking metal titanium as the substrate.

Description

technical field [0001] The invention belongs to the field of electrochemical energy storage materials, in particular to a method for directly growing nickel oxide, cobalt oxide and composite energy storage materials thereof on a titanium substrate. Background technique [0002] With the development of science and technology, environmental pollution and energy shortages are increasing day by day. Lithium-ion batteries (LIBs) and electrochemical supercapacitors (ECs), two new energy storage components, are rapidly expanding in global demand and have become new technologies in the field of chemical power sources. industry highlights. The two have great application value and market potential in many fields such as electric vehicles, hybrid fuel vehicles, special trucks, electric power, railways, communications, national defense, consumer electronics, etc., and have been widely concerned by countries all over the world. [0003] Electrode materials are one of the core components...

Claims

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Application Information

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IPC IPC(8): C23C18/12C25D11/26
Inventor 肖鹏杨飞周明姚建玉张云怀蒙小琴李小玲王志峰袁履辉
Owner CHONGQING UNIV
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