Manufacturing method for copper oxide loaded titanium dioxide nano through tube array and application of copper oxide loaded titanium dioxide nano through tube array

A technology of titanium dioxide and copper oxide, which is applied in the direction of nanotechnology, nanotechnology, and nanotechnology for materials and surface science, can solve problems such as failure, lithium battery capacity decline, and electrode material pulverization, and achieve low cost and high charging efficiency. Effects of improved discharge capacity and good bonding strength

Inactive Publication Date: 2016-03-09
KUNMING UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

Copper oxide can undergo a substitutional redox reaction with lithium metal ( ), this lithium transfer mechanism enables the battery to transfer a large number of charges and release a large specific capacity. However, in the process of lithium extraction / intercalation, the large volume expansion of copper oxide easily leads to the pulverization of electrode materials and failure, the lithium battery capacity drops rapidly

Method used

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  • Manufacturing method for copper oxide loaded titanium dioxide nano through tube array and application of copper oxide loaded titanium dioxide nano through tube array
  • Manufacturing method for copper oxide loaded titanium dioxide nano through tube array and application of copper oxide loaded titanium dioxide nano through tube array
  • Manufacturing method for copper oxide loaded titanium dioxide nano through tube array and application of copper oxide loaded titanium dioxide nano through tube array

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Experimental program
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Embodiment 1

[0023] (1) Preparation of titanium dioxide nanotube arrays: immerse pure Ti sheets (thickness 0.1 mm, purity 99.9%) in acetone, absolute ethanol, and deionized water for 10 minutes and ultrasonically clean them to remove surface grease, and dry them in a drying oven for later use; The pure Ti sheet is used as the positive electrode, and the Pt sheet is used as the counter electrode. 4 The ethylene glycol organic solution of F was oxidized at a constant voltage of 60V for 1 hour, and at the end of the anodic oxidation, the voltage was adjusted to 100V and kept for 5s, then the power was turned off, and the bottom barrier layer of the titanium dioxide nanotube array was removed to obtain highly ordered titanium dioxide nanotubes. tube array; the prepared samples were washed with absolute ethanol and dried for later use.

[0024] (2) Preparation of copper oxide-loaded titania nanotube arrays by electrodeposition: the titania nanotube array prepared in step (1) was used as the neg...

Embodiment 2

[0027] (1) Preparation of titanium dioxide nanotube arrays: immerse pure Ti sheets (thickness 0.15 mm, purity 99.8%) in acetone, absolute ethanol, and deionized water for 10 minutes and ultrasonically clean them to remove surface grease, and dry them in a drying oven for later use; The pure Ti sheet is used as the positive electrode, and the Pt sheet is used as the counter electrode. 4 The ethylene glycol organic solution of F was oxidized at a constant voltage of 40V for 2 hours, and at the end of the anodic oxidation, the voltage was adjusted to 80V and kept for 7s, then the power was turned off, and the bottom barrier layer of the titanium dioxide nanotube array was removed to obtain highly ordered titanium dioxide nanotubes. tube array; the prepared samples were washed with absolute ethanol and dried for later use.

[0028](2) Preparation of copper oxide-loaded titania nanotube arrays by electrodeposition: the titania nanotube array prepared in step (1) was used as the neg...

Embodiment 3

[0031] (1) Preparation of titanium dioxide nanotube arrays: immerse pure Ti sheets (thickness 0.2 mm, purity 99.7%) in acetone, absolute ethanol, and deionized water for 10 minutes and ultrasonically clean them to remove surface grease, and dry them in a drying oven for later use; The pure Ti sheet is used as the positive electrode, and the Pt sheet is used as the counter electrode. 4 The ethylene glycol organic solution of F was oxidized at a constant voltage of 20V for 5 hours, and at the end of the anodic oxidation, the voltage was adjusted to 60V and kept for 10s, then the power was turned off, and the bottom barrier layer of the titanium dioxide nanotube array was removed to obtain highly ordered titanium dioxide nanotubes. tube array; the prepared samples were washed with absolute ethanol and dried for later use.

[0032] (2) Preparation of titanium dioxide nanotube arrays loaded with copper oxide by electrodeposition: the titanium dioxide nanotube array prepared in step...

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Abstract

The invention relates to a manufacturing method for a copper oxide loaded titanium dioxide nano through tube array and an application of the copper oxide loaded titanium dioxide nano through tube array, and belongs to the technical field of manufacturing of electrode materials of lithium ion batteries. The method comprises the following steps of: (1) in a fluorine-containing electrolyte solution, taking a pure titanium sheet as a positive electrode, manufacturing a highly ordered titanium dioxide nanotube array with a positive electrode oxidation method, and removing a blocking layer at the bottom of the titanium dioxide nanotube array with a voltage-increasing method when the positive electrode oxidation is ended to obtain a titanium dioxide nano through tube array; and (2) putting the manufactured nano through tube array in a copper ion-containing salt solution, manufacturing a copper loaded titanium dioxide nano through tube array with an electrodeposition method, and then performing calcining in air to obtain the copper oxide loaded titanium dioxide nano through tube array. The copper oxide loaded titanium dioxide nano through tube array manufactured with the method serves as a positive electrode material of a lithium ion battery to be subjected to battery assembly; and by detecting electrochemical performance of the battery, it is shown that the lithium ion battery manufactured from the electrode material has a relatively high specific discharge capacity.

Description

technical field [0001] The invention relates to a preparation method and application of a titanium dioxide nanotube array electrode loaded with copper oxide, and belongs to the technical field of lithium ion battery electrode material preparation. Background technique [0002] With the gradual consumption of fossil fuels such as petroleum and coal, new energy systems represented by lithium-ion batteries have attracted worldwide attention. Due to its high capacity, high energy density, long cycle life and other advantages, lithium-ion batteries are widely used in electronic devices such as mobile phones and digital cameras, and lithium-ion batteries are also considered as power supplies for equipment with high power requirements such as hybrid vehicles and smart grids. main source of energy. [0003] Lithium-ion batteries are mainly composed of four parts: cathode, anode, electrolyte and separator. At present, the anode material of lithium ion battery that has been industri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/48H01M4/62B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/483H01M4/628H01M10/0525Y02E60/10
Inventor 胡晓晓刘建雄马淼
Owner KUNMING UNIV OF SCI & TECH
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