Preparation method of zinc ion battery doped positive electrode material, zinc ion battery doped positive electrode material and zinc ion battery

A technology of zinc ion battery and positive electrode material, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of unfavorable zinc ion battery popularization and use, complicated preparation process, high cost, and achieve long-term cycle stability, simple process, high cost, etc. Fast response time

Pending Publication Date: 2021-12-10
XIAMEN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the common methods for preparing vanadium oxides at home and abroad include precipitation method, sol-gel method, hydrothermal method, vapor deposition method, electrospinning method, template method, induction method, etc. Although these preparation methods have their own advantages, but There are problems such as complex preparation process, low efficiency and high cost, which are not conducive to the popularization and use of zinc ion batteries

Method used

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  • Preparation method of zinc ion battery doped positive electrode material, zinc ion battery doped positive electrode material and zinc ion battery
  • Preparation method of zinc ion battery doped positive electrode material, zinc ion battery doped positive electrode material and zinc ion battery
  • Preparation method of zinc ion battery doped positive electrode material, zinc ion battery doped positive electrode material and zinc ion battery

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Embodiment

[0033] This embodiment provides a method for preparing a doped positive electrode material for a zinc ion battery, which includes: dissolving vanadium source, oxidant, fuel and cation doping raw materials in water and mixing them uniformly to obtain a mixed phase, and then subjecting the mixed phase to a low-temperature combustion reaction to obtain zinc Ion batteries are doped with cathode materials.

[0034] Among them, the vanadium source includes NH 4 VO 3 . Oxidizing agents include NH 4 NO 3 . Fuel including CO(NH 2 ) 2 、C 2 h 5 o 2 at least one of N. Cationic doping materials include M(NO 3 ) n , M includes at least one of Li, Na, K, Ag, Ca, Mg, Zn, Al, Ni, Mn, Cu.

[0035] The inventors of the present application found that in the existing zinc-ion batteries, due to the properties of the vanadium oxide crystal material itself, there are some problems that are not conducive to electrochemical performance, such as strong electrostatic repulsion between divale...

experiment example

[0049] In terms of molar parts, ammonium metavanadate (0.1mol), ammonium nitrate (0.4mol), urea (0.4mol), and copper nitrate (calculated based on the copper doping weight percentage of 1wt%) were used as raw materials to prepare a water-based zinc ion positive electrode Material Copper doped with vanadium pentoxide (V2O5-Cu). The results of the product analysis are as follows: Figure 1-3 shown.

[0050] figure 1 It is the xrd comparison diagram of the prepared pure vanadium pentoxide and copper-doped 1wt% vanadium pentoxide, and it is found that the phase structure of vanadium pentoxide has not been improved after copper doping.

[0051] figure 2 It is the morphology map of copper-doped vanadium pentoxide, and its morphology is a sheet-like structure.

[0052] image 3 The ratio comparison chart of batteries assembled with pure vanadium pentoxide and copper-doped vanadium pentoxide as zinc ion cathode materials under different current densities, it can be seen that the ...

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Abstract

The invention discloses a preparation method of a zinc ion battery doped positive electrode material, the zinc ion battery doped positive electrode material and a zinc ion battery, and relates to the field of zinc ion batteries. The preparation method comprises the following steps: dissolving a vanadium source, an oxidant, a fuel and a cation doping raw material in water, uniformly mixing to obtain a mixed phase, and carrying out low-temperature combustion reaction on the mixed phase to obtain the zinc ion battery doped positive electrode material, wherein the vanadium source comprises NH4VO3, the oxidant comprises NH4NO3, the fuel includes at least one of CO(NH2)2 and C2H5O2N, the cation doping raw material comprises M(NO3)n, and M comprises at least one of Li, Na, K, Ag, Ca, Mg, Zn, Al, Ni, Mn and Cu. The positive electrode material is obtained through the method, and the zinc ion battery adopts the positive electrode material. According to the invention, the process is simple and efficient, the cost is low, and the rate capability of the zinc ion battery is improved.

Description

technical field [0001] The invention relates to the field of zinc ion batteries, in particular to a method for preparing a zinc ion battery doped positive electrode material, a zinc ion battery doped positive electrode material and a zinc ion battery. Background technique [0002] With the increasing dependence on high-power devices, the development of advanced and sustainable energy systems has become an urgent need. As a main energy storage device, the development and research of batteries should implement a sustainable development strategy that is clean, ecological and environmentally friendly. Lithium-ion batteries have been intensively studied and achieved large-scale commercial applications in the past three decades due to their high energy density, but their high cost and low safety have prompted people to seek other efficient alternative devices. Water-based rechargeable batteries based on multivalent metal ions such as Zn2+, Ca2+, Mg2+ and Al3+ are expected to repl...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M10/054
CPCH01M4/364H01M10/054Y02E60/10
Inventor 麻季冬崔健袁英皓苏永鑫张厚安王泽群王馨何琪
Owner XIAMEN UNIV OF TECH
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