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Method for in-situ synthesis of carbon coated-hydrated V3O7 nanobelt and lithium ion battery

A technology for hydrating vanadium heptaoxide nanometers and lithium ion batteries, which is applied in the direction of batteries, battery electrodes, secondary batteries, etc., can solve the problems of metastable phase structure damage, time-consuming, and complexity, and achieve high repeatability and low energy. The effect of consumption and fast response

Inactive Publication Date: 2016-07-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This two-step carbon coating process is not only complicated and time-consuming, but also causes damage to the structure of some metastable phases, compounds containing variable valence elements, and transition metal oxides

Method used

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  • Method for in-situ synthesis of carbon coated-hydrated V3O7 nanobelt and lithium ion battery
  • Method for in-situ synthesis of carbon coated-hydrated V3O7 nanobelt and lithium ion battery
  • Method for in-situ synthesis of carbon coated-hydrated V3O7 nanobelt and lithium ion battery

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Embodiment 1

[0030] This embodiment is a high-temperature mixed hydrothermal method for in-situ synthesis of V 3 o 7 ·H 2 OC nanoribbon method. Specific steps are as follows:

[0031] Step 1: Add 0.182g of V 2 o 5 Add it to a cavity lined in the high-temperature mixed hydrothermal reactor, and then add 5ml of deionized water;

[0032] Step 2: Add 5ml of 0.02M glucose solution into another chamber of the lining;

[0033] Step 3: After sealing the reactor, put it into an oven to heat up;

[0034] Step 4: When the temperature rises to 200-260°C, rotate the reactor to mix the reactants in the two inner cavities of the reactor, and keep the temperature for 1 hour;

[0035] Step 4: Cool to room temperature after the reaction to obtain a precipitate;

[0036] Step 5: Finally, after washing the obtained precipitate several times with deionized water and absolute ethanol, dry it at 80°C for 10 hours to obtain V with good dispersibility. 3 o 7 ·H 2 OC nanoribbon, its X-ray diffraction pat...

Embodiment 2

[0040] This embodiment is a high-temperature mixed hydrothermal method for in-situ synthesis of V 3 o 7 ·H 2 OC nanoribbon method. Specific steps are as follows:

[0041] Step 1: Add 0.182g of V 2 o 5 Add it to a cavity lined in the high-temperature mixed hydrothermal reactor, and then add 5ml of deionized water;

[0042] Step 2: Add 5ml of 0.02M sucrose solution into another chamber of the lining;

[0043] Step 3: After sealing the reactor, put it into an oven to heat up;

[0044] Step 4: When the temperature rises to 200-260°C, rotate the reactor to mix the reactants in the two inner cavities of the reactor, and keep the temperature for 1 hour;

[0045] Step 4: Cool to room temperature after the reaction to obtain a precipitate;

[0046] Step 5: Finally, after washing the obtained precipitate several times with deionized water and absolute ethanol, dry it at 80°C for 10 hours to obtain V with good dispersibility. 3 o 7 ·H 2 OC nanoribbons. Its X-ray diffraction p...

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Abstract

The invention relates to a method for in-situ synthesis of a carbon coated-hydrated V3O7 nanobelt and a lithium ion battery, and discloses a method for in-situ synthesis of the carbon coated-hydrated V3O7 nanobelt. The method comprises the following steps of respectively heating reaction raw materials to a certain temperature by a high-temperature hybrid hydrothermal method, mixing the reaction raw materials, cooling the reaction raw materials to a room temperature after completion of the hydrothermal reaction, and carrying out heat preservation and drying processing to obtain the in-situ carbon coated V3O7H2O (V3O7H2O@C) nanobelt. The in-situ synthesis of the carbon coated-hydrated V3O7H2O nanobelt with high crystallinity and high structural strength is achieved by the novel high-temperature hybrid hydrothermal method; the material obtained through preparation can be used for an electrode material of the lithium ion battery; and moreover, the carbon coated-hydrated V3O7H2O nanobelt is endowed with very excellent electrochemical performance and can be applied to the field of the lithium ion battery.

Description

technical field [0001] The present invention relates to a method for synthesizing vanadium heptoxide nanobelts, in particular to a method for in-situ synthesis of carbon-coated monohydrate vanadium heptoxide nanobelts, and to a method based on the vanadium heptoxide nanobelts Lithium-ion battery materials. Background technique [0002] With the depletion of fossil fuels represented by coal, oil, and natural gas, and the increasing environmental problems such as the greenhouse effect and air pollution caused by the combustion of these traditional fossil fuels, the establishment of clean and renewable new energy as the basis The new energy structure is one of the most decisive technical fields in the world economy in the future. In this new energy structure, energy storage occupies a huge proportion and will play a vital role. Among many energy storage technologies, lithium-ion batteries are considered to be the most potential energy storage technology due to their high en...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/48H01M4/583H01M4/131H01M4/133H01M4/1391H01M4/1393H01M10/0525
CPCH01M4/131H01M4/133H01M4/1391H01M4/1393H01M4/362H01M4/483H01M4/583H01M10/0525H01M2004/028H01M2220/20H01M2220/30Y02E60/10
Inventor 朱孔军刘鹏程李丽叶刘劲松王婧裘进浩
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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