Eutectoid electrolyte and application thereof in secondary zinc battery

A technology of eutectic melt and electrolyte, applied in the direction of secondary batteries, circuits, electrical components, etc., can solve the problems of immature research on the electrolyte system of secondary batteries, and the research has been reported as early as around 2000, achieving excellent results Effects of thermal and chemical stability, interference avoidance, wide electrochemical window

Active Publication Date: 2018-03-06
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the research on deep eutectic solvents has been reported as early as 2000, the research on electrolyte systems for secondary batteries is still immature.

Method used

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  • Eutectoid electrolyte and application thereof in secondary zinc battery
  • Eutectoid electrolyte and application thereof in secondary zinc battery
  • Eutectoid electrolyte and application thereof in secondary zinc battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] 4.56g of urea, 2.87g of bis(trifluoromethylsulfonyl)imide lithium and 3.13g of bis(trifluoromethylsulfonyl)imide zinc were mixed at room temperature, then placed in a high temperature environment (100°C) and stirred, After being melted into a clear liquid, it is cooled to a greenhouse to obtain a uniform urea+bis(trifluoromethylsulfonyl)imide lithium+bis(trifluoromethylsulfonyl)imide zinc-based eutectic electrolyte.

Embodiment 2

[0088] Mix 3g of polyamide-6, 6g of lithium bis(trifluoromethylsulfonyl)imide and 1.2g of zinc bis(trifluoromethylsulfonyl)imide at room temperature, then place it in a high temperature environment (80°C) and stir , after being melted into a clear liquid, cooled to the greenhouse to obtain a homogeneous polyamide-6+bis(trifluoromethylsulfonyl)imide lithium+bis(trifluoromethylsulfonyl)imide zinc-based eutectic electrolyte.

Embodiment 3

[0090] Mix 3.37g of acetamide, 2.28g of urea, 0.40g of lithium trifluoromethanesulfonate and 0.90g of zinc trifluoromethanesulfonate at room temperature, then place it in a high temperature environment (80°C) and stir until it melts into a clear liquid After cooling to the greenhouse, a homogeneous acetamide+urea+lithium trifluoromethanesulfonate+zinc trifluoromethanesulfonate-based eutectic electrolyte was obtained.

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Abstract

The invention relates to eutectoid electrolyte and a secondary zinc battery using the eutectoid electrolyte. The eutectoid electrolyte contains an acylamino-contained compound and an ionizable organicmetal salt. The eutectoid electrolyte provided by the invention has the characteristics of low viscosity, high ionic conductivity, wide electrochemical window, low cost and insensitiveness to water and air; meanwhile, reversibility and stability of electrochemical deposition / dissolution can be remarkably improved by an interface protecting layer formed by in-situ decomposition of organic anions,so that the problem of poor cycle life of the secondary zinc battery is effectively solved. The secondary zinc battery using the eutectoid electrolyte has the advantages of good charge-discharge cycleperformance, greenness, environmental protection and low price.

Description

technical field [0001] The invention relates to a low eutectic electrolyte, in particular to a low eutectic electrolyte and its application in secondary zinc batteries. Background technique [0002] Although today's lithium-ion, lead-acid, and nickel-metal hydride batteries possess superior performance over previous battery systems, they are still not perfect. Especially in the field of electric vehicles, problems such as high battery weight, high cost, and easy short circuit out of control still limit further development, and there is an urgent need to update and optimize the battery scientific system. Zinc battery is a battery system based on metal zinc or zinc alloy as the negative electrode active material, and has a long history of development, such as zinc-air battery, zinc-manganese alkaline battery, etc. The zinc anode has the advantages of low cost, non-toxicity, environmental protection and high biocompatibility, and its mass specific capacity is 820mAh / g, and its...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/36
CPCY02E60/10
Inventor 崔光磊赵井文董杉木吴天元
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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