Method for regenerating damaged oxide solid electrolyte through electric heating pulse

The Joule heat generated by the Joule heat base is powered on and repaired in segments. The problem that the oxide solid electrolyte is susceptible to lithium dendrites is solved, and efficient repair and quality improvement is achieved, extending the service life of the electrolyte and reducing costs.

CN119683592AActive Publication Date: 2025-03-25KUNMING UNIV OF SCI & TECH
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Patent Information

Application Number
CN202411849902.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-16
Publication Date
2025-03-25
Estimated Expiration
2044-12-16

AI Technical Summary

Technical Problem

The solid oxide electrolyte is susceptible to short circuits caused by the growth of lithium dendrites, resulting in structural damage and performance degradation. Frequent replacement increases the cost of use. In addition, the damaged electrolyte contains rare earths and rare elements with high recycling value, and existing regeneration methods are difficult to effectively recover and repair.

Method used

The Joule heat substrate is powered on to generate Joule heat, and the damaged oxide solid electrolyte is sintered and repaired in stages. By regulating the heating rate and temperature, impurities are removed and densification is promoted, which significantly shortens the regeneration time and improves efficiency.

Benefits of technology

Repair and regeneration are completed in a very short time, effectively reducing the volatility of lithium ions, improving the quality and performance of regenerated electrolytes, extending the duration of use, increasing the number of cycles, and reducing application costs.

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Abstract

The invention discloses a method for regenerating a damaged oxide solid electrolyte through electric heating pulse, and belongs to the technical field of cyclic utilization of battery material resources. The method comprises the following steps: placing the damaged oxide solid electrolyte between Joule heat substrates, and carrying out segmented sintering on the damaged oxide solid electrolyte through Joule heat generated by electrifying the Joule heat substrates. And after sintering, obtaining the regenerated oxide solid electrolyte. According to the method, the damaged oxide solid electrolyte is regenerated through electric heating pulse segmented sintering, so that rapid fault can be realized; the repair and regeneration efficiency of the damaged oxide solid electrolyte is remarkably improved, and the electrochemical performance of the regenerated solid electrolyte cannot be reduced.
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