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Preparation method of COF-based solid-state air positive electrode for solid-state lithium air battery

An air battery and air cathode technology, which is applied in battery electrodes, fuel cells, fuel cell half-cells, and secondary battery-type half-cells, can solve problems such as the complexity of solid-state air cathode design and the lack of solid electrolytes. Achieve good cycle stability, excellent electrochemical performance, and reduce interfacial impedance

Pending Publication Date: 2022-04-08
JILIN UNIV
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Problems solved by technology

However, the current research on lithium-air batteries is still in its infancy. The lack of high-performance, high-air-stable solid-state electrolytes and the complexity of the design of solid-air cathodes are core technical problems that need to be solved urgently.

Method used

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  • Preparation method of COF-based solid-state air positive electrode for solid-state lithium air battery
  • Preparation method of COF-based solid-state air positive electrode for solid-state lithium air battery
  • Preparation method of COF-based solid-state air positive electrode for solid-state lithium air battery

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Embodiment Construction

[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0040] The specific implementation of the present invention will be described in detail below in conjunction with specific embodiments.

[0041] In one embodiment, a method for preparing a COF-based solid air positive electrode for a solid-state lithium-air battery, a method for preparing a CD-COF-Li solid electrolyte powder and an integrated COF-based solid air positive electrode, the steps are as follows:

[0042] Step 1: Add γ-cyclodextrin, lithium hydroxide, trimethyl borate, ultra-dry mesitylene, ultra-dry N,N-dimethylformamide into the reaction kettle, heat in microwave to obtain a cloudy liq...

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Abstract

The invention discloses a preparation method of a COF-based solid-state air positive electrode for a solid-state lithium-air battery, belongs to the technical field of metal-air batteries, and solves the problems of low ionic conductivity of an existing single polymer electrolyte at room temperature and poor air stability of an inorganic solid-state electrolyte. The technical key points are as follows: the COF-based air positive electrode is provided and has the advantages of high stability, high ion and electron conductivity and high porosity, so that the technical difficulty that the existing solid-state air positive electrode is difficult to design is solved, the interface impedance is effectively reduced, the reaction sites are increased, and the service life of the solid-state air positive electrode is prolonged. Therefore, the electrochemical performance of the solid-state lithium-air battery is improved.

Description

technical field [0001] The invention relates to the technical field of metal-air batteries, in particular to a method for preparing a COF-based solid-state air cathode for a solid-state lithium-air battery. Background technique [0002] Energy saving and environmental protection are the two major themes of the development of the world today, and people are constantly devoting themselves to the development of new energy and energy storage equipment. New energy sources such as solar energy, wind energy, tidal energy, and bioenergy cannot be widely used due to the influence of geographical and climatic uncertainties. Emerging electrochemical energy storage devices have attracted extensive attention due to their stability and high storage capacity. Among them, secondary batteries with multiple energy conversions and high charge-discharge capabilities have become a research hotspot. With the rapid development of society, the current commercial lithium-ion batteries have exposed...

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Application Information

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IPC IPC(8): H01M12/08H01M4/96H01M8/1016B82Y30/00
CPCY02E60/50
Inventor 徐吉静王晓雪管德慧李玛琳
Owner JILIN UNIV
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