A large-capacity hydrogen-carbon battery and its preparation method

By coating the lithium lanthanum composite filler-graphene oxide composite on the separator of the hydrogen carbon battery and preparing the separator by coaxial electrospinning method, the problems of existing hydrogen carbon batteries in catalyst stability, battery life and electrode material preparation methods are solved, and high specific capacity and good electrochemical performance are achieved.

CN118553948BActive Publication Date: 2025-03-18ZHANGJIAGANG KEMING NEW ENERGY TECH CO LTD
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Patent Information

Application Number
CN202410603648.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-05-15
Publication Date
2025-03-18
Estimated Expiration
2044-05-15

AI Technical Summary

Technical Problem

The existing hydrogen carbon batteries have problems such as catalyst stability, battery life and electrode material preparation methods in terms of preparation and performance, resulting in insufficient capacity and performance.

Method used

The separator was prepared by coaxial electrospinning method, and nanosilicon dioxide microspheres were grown in situ in the mixed liquid of ethyl orthosilicate to improve the heat resistance of the separator. At the same time, the lithium lanthanum composite filler-graphene oxide composite slurry is coated on the separator, and the good ionic conductivity and compatibility with metal lithium are utilized, combined with the high conductivity and large specific surface area of ​​graphene, the specific capacity of the battery is improved.

Benefits of technology

The high specific capacity and good electrochemical performance of hydrogen carbon batteries have been achieved, especially in terms of heat resistance and lithium ion diffusion speed.

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Abstract

The present invention relates to the field of electrochemical energy storage technology, specifically to a large-capacity hydrogen-carbon battery and a preparation method thereof. The present invention uses a polyetherimide solution as a core layer spinning solution, a polyvinylidene fluoride solution as a shell layer spinning solution, and coaxial electrospinning to prepare a diaphragm, and then the diaphragm is immersed in a tetraethyl orthosilicate mixed solution, and nano-silicon dioxide microspheres are in situ grown on the surface of the diaphragm. The battery prepared using the diaphragm has good heat resistance. The present invention coats a slurry containing a lithium lanthanum composite filler-graphene oxide composite on the diaphragm. The lithium lanthanum composite filler has good ionic conductivity and good compatibility with metallic lithium. The lithium lanthanum composite filler is applied to the diaphragm, and the prepared battery exhibits a higher specific capacity.
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