Preparation method of electrolyte of all-solid-state lithium battery

A technology for lithium batteries and electrolytes, applied in the field of electrolyte preparation for all-solid-state lithium batteries, can solve the problems of low conductivity, high manufacturing costs, and waste of electric energy, and achieve improved lithium ion conductivity, cost-effectiveness, and improved conductivity performance effect

Active Publication Date: 2020-07-24
YANGDE ELECTRIC GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the electrolyte materials in common all-solid-state lithium batteries generally have low conductivity efficiency, so when

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for preparing an electrolyte for an all-solid-state lithium battery, characterized in that: the method for preparing an electrolyte for an all-solid-state lithium battery requires the following appliances and preparation materials: a ball mill, a rotary kiln, LiOH powder, LiCl or LiBr powder, LiA (A is other halogen atom) powder or Mg(OH) 2 Powder, argon, a heating furnace, liquid argon, base material.

[0023] The electrolyte preparation method of the all-solid-state lithium battery includes the following steps:

[0024] S1: Select a ball mill, take a lithium-rich anti-perovskite, add it to the inside of the ball mill, and then select suitable reaction precursors LiOH and LiCl or LiOH and LiBr to the inside of the ball mill, turn on the switch of the ball mill, and mix well The raw materials are fully ball-milled and mixed;

[0025] S2: Take out the well-mixed mixture from the ball mill, add it to the rotary kiln, and carry out a solid-phase chemical reactio...

Embodiment 2

[0032] A method for preparing an electrolyte for an all-solid-state lithium battery, characterized in that: the method for preparing an electrolyte for an all-solid-state lithium battery requires the following appliances and preparation materials: a ball mill, a rotary kiln, LiOH powder, LiCl or LiBr powder, LiA (A is other halogen atom) powder or Mg(OH) 2 Powder, argon, a heating furnace, liquid argon, base material.

[0033] The electrolyte preparation method of the all-solid-state lithium battery includes the following steps:

[0034] S1: Select a ball mill, take a lithium-rich anti-perovskite, add it to the inside of the ball mill, and then select suitable reaction precursors LiOH and LiCl or LiOH and LiBr to the inside of the ball mill, turn on the switch of the ball mill, and mix well The raw materials are fully ball-milled and mixed;

[0035] S2: Take out the well-mixed mixture from the ball mill, add it to the rotary kiln, and carry out a solid-phase chemical reactio...

Embodiment 3

[0042] A method for preparing an electrolyte for an all-solid-state lithium battery, characterized in that: the method for preparing an electrolyte for an all-solid-state lithium battery requires the following appliances and preparation materials: a ball mill, a rotary kiln, LiOH powder, LiCl or LiBr powder, LiA (A is other halogen atom) powder or Mg(OH) 2 Powder, argon, a heating furnace, liquid argon, base material.

[0043] The electrolyte preparation method of the all-solid-state lithium battery includes the following steps:

[0044] S1: Select a ball mill, take a lithium-rich anti-perovskite, add it to the inside of the ball mill, and then select suitable reaction precursors LiOH and LiCl or LiOH and LiBr to the inside of the ball mill, turn on the switch of the ball mill, and mix well The raw materials are fully ball-milled and mixed;

[0045] S2: Take out the well-mixed mixture from the ball mill, add it to the rotary kiln, and carry out a solid-phase chemical reactio...

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PUM

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Abstract

The invention discloses a preparation method of an electrolyte of an all-solid-state lithium battery. According to the invention, ball-milling mixing is combined with a low-temperature solid-phase reaction to realize the method; meanwhile, the amorphous lithium-rich anti-perovskite solid electrolyte material is prepared by means of mechanical ball milling, melting and cold quenching and the like;the prepared amorphous powder material is uniformly deposited on a selected substrate through spin coating, dipping-pulling or thermal spraying to obtain a thickness-controllable thin film, so that lithium ion conductivity test, activation energy measurement and total battery assembly can be carried out; lattice constants and anti-perovskite structure factors are regulated and controlled by dopingother halogen atoms, so that the material is more suitable for lithium ion migration; and non-stoichiometric phases are generated by volatilizing halides to construct lithium ion migration channels and shelf structures. A large number of 3D fast ion transmission channels are constructed in anti-perovskite crystal lattices through multiple means, the purpose of improving the lithium ion conductivity of the electrolyte material is achieved, and therefore the durability of the all-solid-state lithium battery is improved.

Description

technical field [0001] The invention belongs to the technical field of lithium battery preparation, in particular to an electrolyte preparation method of an all-solid-state lithium battery. Background technique [0002] All-solid-state lithium secondary battery, referred to as all-solid-state lithium battery for short, is a lithium secondary battery in which each unit of the battery, including the positive and negative electrodes, and the electrolyte all use solid-state materials. It was developed in the 1950s. All-solid-state lithium batteries are simpler in structure than traditional lithium-ion batteries. In addition to conducting lithium ions, the solid electrolyte also acts as a separator. In all-solid-state lithium batteries, the electrolyte, electrolyte salt, separator and adhesive polyvinylidene fluoride Vinyl etc. are not needed, greatly simplifying the battery construction steps. The working principle of an all-solid-state lithium battery is similar to that of a l...

Claims

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Application Information

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IPC IPC(8): H01M10/0562H01M10/058H01M10/052H01M10/42
CPCH01M10/052H01M10/0562H01M10/058H01M10/4235Y02E60/10Y02P70/50
Inventor 张爱文韩建涛
Owner YANGDE ELECTRIC GRP CO LTD
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