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Mn-doped Ni(OH)2 nano-structure and preparation method thereof

A nanostructure and nanosheet technology, applied in the field of Ni2 nano preparation, can solve problems such as difficult to remove and affect performance

Active Publication Date: 2012-06-27
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Generally speaking, the chemical co-precipitation method needs to accurately drop the ion solution in the buffer solution, adjust its pH value, and add a dispersant for dispersion. The process of co-precipitation is easy to absorb or include other impurity ions, which is difficult to remove. Affect Ni(OH) 2 performance improvement

Method used

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  • Mn-doped Ni(OH)2 nano-structure and preparation method thereof
  • Mn-doped Ni(OH)2 nano-structure and preparation method thereof
  • Mn-doped Ni(OH)2 nano-structure and preparation method thereof

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Embodiment 1

[0023] Embodiment 1: Mn-doped Ni(OH) 2 A method for preparing a nanostructure, comprising the following steps:

[0024] Immerse the manganese elemental target in NiCl 2 In the solution, the height from the surface of the manganese simple substance target to the liquid level is 1.2mm, using Nd:YAG pulsed laser with a wavelength of 1064nm and an energy of 100mJ to ablate the manganese simple substance target for 4-6 minutes to obtain Mn-doped Ni ( Oh) 2 Nano-structure.

[0025] Such as figure 2 The results show that the relatively strong and broad XRD diffraction peaks are attributed to the Ni(OH) of the α phase 2 (JCPDS NO.38-0715), the weaker and smaller XRD diffraction peak is Mn 3 o 4 (JCPDS NO. 75-1560). With NiCl 2 As the concentration of the solution increases, the XRD diffraction peak intensity becomes weaker, indicating that the crystallinity becomes worse, which is confirmed by the subsequent transmission electron microscope (TEM) figure and selected electron ...

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Abstract

The invention discloses an Mn-doped Ni(OH)2 nano-structure and a preparation method thereof. The preparation method comprises the following steps of immersing an elementary manganese target material into a NiCl2 solution, and carrying out ablation of the elementary manganese target material for 4 to 6 minutes by an Nd: YAG pulse laser having wavelength of 1064nm and energy of 95 to 105mJ to obtain the Mn-doped Ni(OH)2 nano-structure. The preparation method of the Mn-doped Ni(OH)2 nano-structure provides a novel approach for nano-material doping and develops a novel use of a laser-induced liquid ablation technology.

Description

technical field [0001] The present invention relates to a Ni(OH) 2 The preparation method of nanometer, be specifically related to a kind of Mn-doped Ni(OH) 2 Nanostructures and methods of making them. Background technique [0002] Ni(OH) 2 Nanomaterials are a new type of positive electrode material for alkaline nickel series batteries. They have superior high rate performance and electrochemical performance. When they are used as anode materials for capacitors, they have high energy storage capabilities. , and has enhanced specific capacitance, which has broad application prospects in supercapacitors. Doping modification is to improve Ni(OH) 2 One of the effective means for electrochemical performance and high rate capability. Currently, for Ni(OH) 2 The methods for doping modification mainly include: chemical co-precipitation method, solvothermal method, and electrochemical deposition method. 2 play a leading role in doping modification. Generally speaking, the che...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/52H01G9/042B23K26/00
CPCY02E60/12Y02E60/10
Inventor 梁长浩张和民刘俊田振飞
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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