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Self-forming lithium-iodine battery based on LiI-based micromolecule composite solid electrolyte and production method thereof

A solid electrolyte, self-forming technology, applied in the field of electrochemistry, to achieve the effect of simple and easy method, high purity, and improvement of contact problems

Active Publication Date: 2021-02-23
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

LiI-based small-molecule composite solid-state electrolytes can form lithium-iodine batteries in a self-forming manner, which may generate more ideas in the application of solid-state batteries. However, in the current scientific research literature, lithium iodide-based small-molecule composite materials are rarely used to form self-forming batteries. Record of the battery

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  • Self-forming lithium-iodine battery based on LiI-based micromolecule composite solid electrolyte and production method thereof

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Embodiment 1

[0030] A self-forming lithium-iodine battery based on a LiI-based composite solid electrolyte. The LiI-based composite material obtained by compounding LiI and LiIHPN is used as a solid-state electrolyte. After assembling the battery, the positive and negative electrodes are spontaneously formed at both ends of the electrolyte through a chemical formation process. pole material.

[0031] A kind of preparation method of the self-formed lithium-iodine battery of this embodiment based on LiI base composite solid state electrolyte, its steps are as follows:

[0032] a. Synthesis of LiI(HPN) 2 Material: Dry lithium iodide with a purity of 99% in an oven for 48 hours, mix lithium iodide and trihydroxypropionitrile at a molar ratio of 1:1, and then quench at a temperature of 180°C for 24 hours treatment to synthesize LiI(HPN) 2 Material;

[0033] b. The preparation process of high-purity LiIHPN material:

[0034] With the LiI(HPN) obtained in said step a 2 Mix with LiI at a mola...

Embodiment 2

[0048] This embodiment is basically the same as Embodiment 1, especially in that:

[0049] A self-forming lithium-iodine battery based on a LiI-based composite solid electrolyte. The LiI-based composite material obtained by compounding LiI and LiIHPN is used as a solid-state electrolyte. After assembling the battery, the positive and negative electrodes are spontaneously formed at both ends of the electrolyte through a chemical formation process. pole material.

[0050] A kind of preparation method of the self-formed lithium-iodine battery of this embodiment based on LiI base composite solid state electrolyte, its steps are as follows:

[0051] a. Synthesis of LiI(HPN) 2 Material: Dry lithium iodide with a purity of 99% in an oven for 48 hours, mix lithium iodide and trihydroxypropionitrile at a molar ratio of 1:1, and then quench at a temperature of 100°C for 24 hours treatment to synthesize LiI(HPN) 2 Material;

[0052] b. The preparation process of high-purity LiIHPN ma...

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Abstract

The invention discloses a self-forming lithium-iodine all-solid-state battery based on an LiI-based micromolecule composite solid electrolyte and a production method thereof. A lithium negative electrode and an iodine positive electrode can be spontaneously formed on the two sides of the electrolyte through a specific formation process, and the production of the battery is very simple due to the fact that the positive electrode and the negative electrode of the battery are spontaneously formed; and LiI-based micromolecular composite material is adopted so that compared with a traditional polymer solid electrolyte, the electrolyte is more suitable for concept of environmental protection. According to the invention, the key component lithium iodide trihydroxy propionitrile (HPN) material ofthe composite solid electrolyte is adopted, the improved method is used to produce, a production speed is rapid, the purity is high, the operation is easy, and the production efficiency of the self-forming battery can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry, and in particular relates to a self-formed lithium-iodine battery based on a lithium iodide-based small molecule solid electrolyte. Through a specific formation process, the battery generates positive and negative electrodes in situ on both sides of the electrolyte in a self-forming manner. Background technique [0002] Storing electrical energy in high-energy and high-power-density media is of great interest due to the emergence of high-power mobile electrical devices, electric vehicles, and electromobility technologies such as drones and robots. Compared with other conventional batteries, commercial Li-ion batteries (LIBs) dominate the energy storage market due to their high energy density, design flexibility, and ease of operation, and outperform other battery systems, namely lead-acid, nickel-cadmium, Nickel metal hydride, etc., accounted for 70% of the total global sales. However,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/056H01M10/052H01M10/058H01M10/44
CPCH01M10/056H01M10/052H01M10/058H01M10/446H01M2300/0065Y02E60/10Y02P70/50
Inventor 施思齐刘洋王雪琪
Owner SHANGHAI UNIV