Molybdenum dioxide/nickel cobaltate classification hybrid nano-structure array and method for preparing same

A molybdenum dioxide and nanostructure technology, applied in the field of nanostructures, can solve the problems of low cycle life and limited development, and achieve the effects of large commercial prospects, improved electrical conductivity and stable structure.

Active Publication Date: 2016-12-14
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the volume change in the process of charging and disc

Method used

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  • Molybdenum dioxide/nickel cobaltate classification hybrid nano-structure array and method for preparing same
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  • Molybdenum dioxide/nickel cobaltate classification hybrid nano-structure array and method for preparing same

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Embodiment 1

[0029] A method for preparing a molybdenum dioxide / nickel cobaltate hierarchical hybrid nanostructure array, the specific steps are as follows:

[0030] (1) Put the purchased carbon fiber paper into the vacuum chamber of the magnetron sputtering deposition system, sputter 30min with the power of 40W, obtain the carbon fiber paper of sputtering metal molybdenum;

[0031] (2) Take by weighing 1.2g molybdenum-containing powder with an electronic balance and pour it into a burning boat, and pave it; the carbon fiber paper of the sputtered metal molybdenum obtained in step (1) is cut into an area of ​​1cm 2 -6cm 2 Thin slices, placed on the prepared burning boat;

[0032] (3) Place the burning boat in step (2) in a three-temperature zone tube furnace, and perform annealing treatment at 600°C in a high-purity argon atmosphere, wherein the heating rate is 20°C / min, and the holding time is 60min. Obtain carbon fiber paper grown with molybdenum dioxide nanowire arrays;

[0033] (4) ...

Embodiment 2

[0039] A method for preparing a molybdenum dioxide / nickel cobaltate hierarchical hybrid nanostructure array, the specific steps are as follows:

[0040] (1) Put the purchased carbon fiber paper into the vacuum chamber of the magnetron sputtering deposition system, sputter 30min with the power of 40W, obtain the carbon fiber paper of sputtering metal molybdenum;

[0041] (2) Take by weighing 1.2g molybdenum-containing powder with an electronic balance and pour it into a burning boat, and pave it; the carbon fiber paper of the sputtered metal molybdenum obtained in step (1) is cut into an area of ​​1cm 2 -6cm 2 Thin slices, placed on the prepared burning boat;

[0042] (3) Place the burning boat in step (2) in a three-temperature zone tube furnace, and perform annealing treatment at 500°C in a high-purity argon atmosphere, wherein the heating rate is 20°C / min, and the holding time is 80min. Obtain carbon fiber paper grown with molybdenum dioxide nanosheet arrays;

[0043](4) ...

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Abstract

The invention discloses a molybdenum dioxide/nickel cobaltate classification hybrid nano-structure array and a method for preparing the same. Nickel cobaltate nano-sheet arrays are compounded on molybdenum dioxide nano-wires and nano-sheet substrates by the aid of hydrothermal processes to obtain the molybdenum dioxide/nickel cobaltate classification hybrid nano-structure array. The method includes particular steps of (1), preparing the molybdenum dioxide nano-wires or the molybdenum dioxide nano-sheet arrays on molybdenum-sprayed carbon paper by the aid of chemical vapor deposition processes; (2), placing the prepared nano-wires or the prepared nano-sheet arrays in mixed solution with cobalt nitrate, nickel nitrate, ammonium fluoride and urea and carrying out reaction under the conditions of different temperatures, different moments and precursor solution with different concentrations by the aid of hydrothermal reaction processes to prepare compound precursors; (3), placing the prepared precursors in a tube furnace and annealing the precursors in air to obtain the molybdenum dioxide/nickel cobaltate classification hybrid nano-structure array. The thicknesses of nickel cobaltate nano-sheets are 10-20 nm.

Description

technical field [0001] The invention relates to the field of nanostructures, in particular to a molybdenum dioxide / nickel cobaltate hierarchical hybrid nanostructure array and a preparation method thereof. Background technique [0002] With the advancement of science and technology in the 21st century, our modern society is facing energy and environment related issues such as pollution, lack of fossil fuels and global warming. To overcome these complications, clean and renewable energy materials, as well as their devices, are urgently required. Fortunately, the use of renewable energy, such as solar and wind energy, effectively enhances our daily lives, but the decentralized nature of renewable energy requires high-performance energy storage devices. In this regard, electrochemical energy storage systems play a crucial role in the efficient storage of solar and wind energy. Currently, batteries and supercapacitors are the most promising and successful energy storage system...

Claims

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Application Information

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IPC IPC(8): C01G53/00B82Y40/00B82Y30/00
CPCB82Y30/00B82Y40/00C01G53/00C01P2002/72C01P2002/85C01P2004/03C01P2004/04C01P2004/50C01P2004/80
Inventor 张勇汤凯田茶彭昊崔接武舒霞郑红梅王岩吴玉程
Owner HEFEI UNIV OF TECH
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