A kind of flame retardant organic electrolytic solution and rechargeable zinc battery for rechargeable zinc battery

An organic electrolyte and zinc battery technology, which is applied in the manufacture of electrolytes, secondary batteries, and electrolyte batteries, etc., can solve the problems of volatile, flammable electrolyte, and high toxicity, and achieve reduced growth, excellent flame retardancy, and inhibition of decomposition Effect

Active Publication Date: 2021-07-30
HEBEI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the purposes of the present invention is to provide a flame-retardant organic electrolyte for rechargeable zinc batteries to solve the problems of flammability, volatility and high toxicity of the existing organic zinc battery electrolytes

Method used

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  • A kind of flame retardant organic electrolytic solution and rechargeable zinc battery for rechargeable zinc battery
  • A kind of flame retardant organic electrolytic solution and rechargeable zinc battery for rechargeable zinc battery
  • A kind of flame retardant organic electrolytic solution and rechargeable zinc battery for rechargeable zinc battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] In a high-purity argon atmosphere, 0.25 g NaClO 4 Sodium salt and 0.51 g Zn(CF 3 SO 3 ) 2 Dissolve the zinc salt in 2 mL of LTMP flame-retardant organic solvent, shake it fully, and ultrasonicate for 10 minutes at room temperature to completely dissolve the salt, and make it into 1 mol / L NaClO 4 + 0.7 mol / L Zn(CF 3 SO 3 ) 2 -TMP electrolyte.

[0050] Gained electrolyte is carried out following performance test:

[0051] (1) Flame retardant performance

[0052] Ignition test: use a lighter to ignite the fire-resistant cotton soaked in the electrolyte prepared in this embodiment, and observe its burning condition.

[0053] figure 1 The ignition test results of a show that the flame-retardant organic electrolyte prepared in this example cannot be ignited by an open flame at all, and has a good flame-retardant effect.

[0054] Thermal stability test: for the flame retardant organic electrolyte (1 mol / L NaClO 4 + 0.7 mol / L Zn(CF 3 SO 3 ) 2 -TMP) for thermograv...

Embodiment 2

[0072] In a high-purity argon atmosphere, 0.49 g NaClO 4 Sodium salt and 0.51 g Zn(CF 3 SO 3 ) 2 Dissolve the zinc salt in 2 mL of LTMP flame-retardant organic solvent, shake it fully, and ultrasonicate for 1 hour at room temperature to completely dissolve the salt and prepare it as 2 mol / L NaClO 4 + 0.7 mol / L Zn(CF 3 SO 3 ) 2 -TMP electrolyte. The obtained electrolyte was tested for flame retardancy, thermal stability, electrical conductivity and electrochemical performance.

[0073] The electrolyte in this example is applied to a rechargeable zinc battery, and the preparation method is as follows: in a pure argon environment, use the prepared Na 3 V 2 (PO 4 ) 2 o 2 F The positive electrode sheet was used as the positive electrode, the zinc foil with a diameter of 12 mm was used as the negative electrode, and the glass fiber membrane was used as the separator. 80 μL of the electrolyte of this example was added dropwise, and the battery was packaged to prepare a zin...

Embodiment 3

[0076] In a high-purity argon atmosphere, 0.085 g NaClO 4 Sodium salt and 0.363 g Zn(CF 3 SO 3 ) 2 Dissolve the zinc salt in 1 mL of LTMP flame retardant organic solvent, shake it fully, and ultrasonicate for 15 minutes at room temperature to completely dissolve the salt, and make it into 0.7 mol / L NaClO 4 + 1 mol / L Zn(CF 3 SO 3 ) 2 -TMP electrolyte. The obtained electrolyte was tested for flame retardancy, thermal stability, electrical conductivity and electrochemical performance.

[0077] The electrolyte in this example is applied to a rechargeable zinc battery, and the preparation method is as follows: in a pure argon environment, use the prepared Na 3 V 2 (PO 4 ) 2 o 2 F The positive electrode sheet was used as the positive electrode, the zinc foil with a diameter of 12 mm was used as the negative electrode, and the glass fiber membrane was used as the separator. 80 μL of the electrolyte of this example was added dropwise, and the battery was packaged to prepar...

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Abstract

The invention provides a flame retardant organic electrolyte for a rechargeable zinc battery and a rechargeable zinc battery, the flame retardant organic electrolyte for a rechargeable zinc battery includes a soluble zinc salt, a sodium salt electrolyte salt and a flame retardant An organic solvent, the concentration of the soluble zinc salt is 0.1-2 mol / L, and the concentration of the sodium salt electrolyte salt is 0.1-2.5 mol / L. The flame retardant organic electrolyte solution of the present invention has suitable conductivity, viscosity, cation migration rate, high voltage window and excellent flame retardancy, can realize uniform deposition of metal zinc, and improve Zn deposition / precipitation coulombic efficiency and atom utilization rate , showing good electrochemical reversibility and compatibility with cathode and anode materials. The flame retardant organic electrolyte is applied to Zn / / Na 3 V 2 (PO 4 ) 2 o 2 In the F rechargeable zinc battery system, the safety of the battery can be significantly improved, and this zinc battery system has a high discharge voltage platform and good cycle stability, and has broad application prospects.

Description

technical field [0001] The invention relates to a battery electrolyte, in particular to a flame-retardant organic electrolyte used for a rechargeable zinc battery and a rechargeable zinc battery. Background technique [0002] In order to meet the increasing energy demand, solve the problem of rapid consumption of fossil fuel energy and environmental degradation. The development of renewable energy such as solar energy, wind energy, and tidal energy, and the improvement of energy utilization have attracted widespread attention. However, renewable energy is usually intermittent and is greatly affected by factors such as time and climate. If it is directly integrated into the grid, it will cause a great impact on the grid. Secondary battery technology can realize the storage and release of energy by utilizing the mutual conversion between chemical energy and electrical energy. It has the function of "shaving peaks and filling valleys", which is particularly important for the d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0569H01M10/0568H01M10/058H01M10/054H01M10/42
CPCH01M10/054H01M10/0568H01M10/0569H01M10/058H01M10/4235H01M2300/0037Y02E60/10Y02P70/50
Inventor 张宁董阳王元媛徐建中
Owner HEBEI UNIVERSITY
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