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Transition metal ion doped manganous-manganic oxide nanosheet array based on carbon cloth growth as well as preparation method and application thereof

A transition metal ion, manganese tetroxide technology, applied in nanotechnology for materials and surface science, manganese oxide/hydroxide, nanotechnology, etc. , structural instability and other problems, to achieve the effect of low preparation cost, simple method and improved electrochemical performance

Active Publication Date: 2021-02-19
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] It is well known that manganese-based oxides have been a hot research topic as cathode materials for aqueous zinc-ion batteries (ZIBs) due to their high energy density, however, their structural instability leads to poor cycle stability.
For example, the dissolution of the cathode during charge and discharge, irreversible lattice distortion, and electrostatic interactions lead to serious capacity attenuation and poor cycle stability, which severely restrict the development and promotion of zinc-ion batteries (ZIBs).

Method used

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  • Transition metal ion doped manganous-manganic oxide nanosheet array based on carbon cloth growth as well as preparation method and application thereof
  • Transition metal ion doped manganous-manganic oxide nanosheet array based on carbon cloth growth as well as preparation method and application thereof
  • Transition metal ion doped manganous-manganic oxide nanosheet array based on carbon cloth growth as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A cobalt ion-doped trimanganese tetraoxide (Co-Mn) based on carbon cloth growth in this embodiment 3 o 4 / CC) the preparation method of nanosheet array, the steps are as follows:

[0051] (1) Carbon cloth pretreatment

[0052] First make a 3×3cm 2 The standard empty carbon cloth is soaked in concentrated nitric acid with a concentration of 12mol / L, heated in a water bath at a constant temperature of 80°C for 1 to 2 hours, then the empty carbon cloth is ultrasonically cleaned several times with absolute ethanol and deionized water, and finally dried Boxes are also left to dry overnight.

[0053] (2) material preparation

[0054] Electrolyte preparation: prepare 100mL containing 0.1mol / L manganese acetate tetrahydrate (Mn(CH 3 COO) 2 4H 2 O), 0.1mol / L sodium sulfate (Na 2 SO 4 ) and 0.005mol / L cobalt acetate tetrahydrate (Co(CH 3 COO) 2 4H 2 O) mixed aqueous solutions.

[0055] (3) Constant potential electrodeposition

[0056] The treated empty carbon cloth ...

Embodiment 2

[0060] A kind of nickel ion doped manganese tetraoxide (Ni-Mn 3 o 4 / CC) the preparation method of nanosheet array, the steps are as follows:

[0061] (1) Carbon cloth pretreatment

[0062] First make a 3×3cm 2 The standard empty carbon cloth is soaked in concentrated nitric acid with a concentration of 12mol / L, heated in a water bath at a constant temperature of 80°C for 1 to 2 hours, then the empty carbon cloth is ultrasonically cleaned several times with absolute ethanol and deionized water, and finally dried Boxes are also left to dry overnight.

[0063] (2) material preparation

[0064] Electrolyte preparation: prepare 100mL containing 0.1mol / L manganese acetate tetrahydrate (Mn(CH 3 COO) 2 4H 2 O), 0.1mol / L sodium sulfate (Na 2 SO 4 ) and 0.005mol / L nickel acetate tetrahydrate (Ni(CH 3 COO) 2 4H 2 O) mixed solution.

[0065] (3) Constant potential electrodeposition

[0066] The treated empty carbon cloth was used as the working electrode for constant potent...

Embodiment 3

[0070] A copper ion-doped trimanganese tetraoxide (Cu-Mn) based on carbon cloth growth in this embodiment 3 o 4 / CC) the preparation method of nanosheet array, the steps are as follows:

[0071] (1) Carbon cloth pretreatment

[0072] First make a 3×3cm 2 The standard empty carbon cloth is soaked in concentrated nitric acid with a concentration of 12mol / L, heated in a water bath at a constant temperature of 80°C for 1 to 2 hours, then the empty carbon cloth is ultrasonically cleaned several times with absolute ethanol and deionized water, and finally dried Boxes are also left to dry overnight.

[0073] (2) material preparation

[0074] Electrolyte preparation: prepare 100mL containing 0.1mol / L manganese acetate tetrahydrate (Mn(CH 3 COO) 2 4H 2 O), 0.1mol / L sodium sulfate (Na 2 SO 4 ) and 0.005mol / L copper acetate monohydrate (Cu(CH 3 COO) 2 ·H 2 O) mixed aqueous solution.

[0075] (3) Electrodeposition by CV scanning method

[0076] The treated empty carbon cloth w...

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Abstract

The invention relates to a transition metal ion doped manganous-manganic oxide nanosheet array based on carbon cloth growth as well as a preparation method and an application thereof. According to theinvention, a high-potential window of the manganese-based material is used as an advantage, and the manganese-based material is modified by doping transition metal ions on the basis, so that the electrochemical performance of the zinc ion battery is integrally improved. The method comprises the following basic steps: firstly, pre-treating the empty carbon cloth; then growing a transition metal ion doped manganous-manganic oxide nanosheet array on the hollow carbon cloth by adopting an electro-deposition method; and finally cleaning and drying. A one-step method is adopted, convenience and simplicity are achieved, raw materials are convenient to obtain, cost is low, toxicity is avoided, and the problems that in a traditional process, materials contain too many impurities, and operation istedious are solved. For the cathode material of the zinc ion battery, the structure is optimized by doping the manganese-based oxide into the transition metal ions, so that the electrochemical performance of the battery is improved. Therefore, a very good thought is provided for material selection or improvement of the cathode material of the zinc ion battery in the future.

Description

technical field [0001] The invention belongs to the field of new energy materials, and relates to a cathode energy storage structural material. More specifically, the invention relates to a transition metal ion-doped trimanganese tetroxide (M-Mn) grown on the basis of carbon cloth. 3 o 4 / CC) nanosheet array and its preparation method and application in zinc ion battery. Background technique [0002] It is well known that manganese-based oxides have been a hot research topic as cathode materials for aqueous zinc-ion batteries (ZIBs) due to their high energy density, however, their structural instability leads to poor cycling stability. For example, the dissolution of the cathode during charge and discharge, irreversible lattice distortion, and electrostatic interactions lead to serious capacity decay and poor cycle stability, which severely restrict the development and promotion of zinc-ion batteries (ZIBs). [0003] Based on the above reasons, this application is filed. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/02C25D5/54C25D9/04B82Y30/00B82Y40/00H01M4/50H01M4/62H01M10/054
CPCC01G45/02C25D5/54C25D9/04H01M4/502H01M4/625H01M10/054B82Y30/00B82Y40/00C01P2002/72C01P2004/03C01P2002/85Y02E60/10C01P2002/54C01P2004/24C01P2006/40H01M4/0452H01M4/366H01M4/131H01M4/1391C25D9/08
Inventor 王浩季杰万厚钊张军汪汉斌
Owner HUBEI UNIV
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