Flow battery electrolyte based on lunar surface ilmenite type lunar soil in-situ utilization, preparation method, application and flow battery

The in-situ preparation of liquid flow battery electrolytes by lunar ilmenite-type lunar soil has solved the problems of lithium-ion battery capacity attenuation and high transportation costs of traditional liquid flow batteries, and achieved efficient utilization of lunar resources and long-term and efficient operation of the battery system.

CN119725656APending Publication Date: 2025-03-28DEEP SPACE EXPLORATION LABORATORY
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Patent Information

Application Number
CN202411913159.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-24
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

In the prior art, lithium-ion batteries fail to capacity attenuate after long-term unmanned operation of the scientific research station, and the entire battery pack needs to be replaced, resulting in an increase in load demand and a waste battery occupying space and is difficult to recycle. The electrolyte space and weight of traditional liquid flow batteries are high, and the transportation cost is high.

Method used

The liquid flow battery electrolyte is prepared by in-situ using the lunar ilmenite type lunar soil. The TiOSO4 and FeSO4 solutions were separated by selective acid leaching method, and the supporting electrolyte was added to prepare positive and negative electrode electrolyte solutions for the preparation of liquid flow batteries.

Benefits of technology

It realizes the in-situ utilization of lunar surface resources, reduces battery load demand, reduces the weight pressure of the earth-moon transportation, and is easy to replace the attenuated electrolyte, and is suitable for large-scale energy storage scenarios on the lunar surface.

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Abstract

The invention discloses a flow battery electrolyte based on lunar surface ilmenite type lunar soil in-situ utilization, a preparation method, application and a flow battery, and belongs to the field of lunar resource in-situ utilization. The preparation method of the electrolyte comprises the following steps: separating ilmenite type lunar soil from a lunar surface, grinding, adding sulfuric acid, heating and stirring for selective acid leaching to obtain a mixture subjected to acid leaching; centrifuging the mixture subjected to acid leaching for solid-liquid separation to obtain a TiOSO4 solution and a FeSO4 solution, and respectively adding a supporting electrolyte to prepare a positive electrode electrolyte solution and a negative electrode electrolyte solution; preparing the flow battery by using the positive and negative electrolyte solutions; on one hand, a flow battery electrolyte can be prepared in situ by utilizing lunar soil resources to serve as an energy storage unit, earth-moon round-trip transportation pressure is greatly reduced, on the other hand, in-situ preparation and replacement of an attenuation electrolyte lunar surface after long-time operation of the flow battery can be realized, unmanned maintenance of the lunar surface is facilitated, and the service life of the flow battery is prolonged. And a large-scale, long-time and efficient energy storage system is provided for various load operation of the lunar base.
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