Electrolyte, preparation method and application thereof
CN122177964APending Publication Date: 2026-06-09SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
- Filing Date
- 2024-12-07
- Publication Date
- 2026-06-09
AI Technical Summary
Technical Problem
In aqueous batteries, hydrogen evolution, corrosion, and uncontrolled dendrite growth are prone to occur at the metal anode interface, affecting cycle stability.
Method used
An electrolyte containing a deep eutectic solvent and an electrolyte salt is used to form a deep eutectic solvent system through the combination of hydrogen bond acceptors and hydrogen bond donors. This system is used in aqueous batteries to suppress the formation of zinc dendrites, and negative electrode alloy materials are prepared through primary cell discharge treatment.
Benefits of technology
This has resulted in a dendrite-free aqueous battery with fewer side reactions, improving the battery's cycle stability and coulombic efficiency.
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Figure CN122177964A_ABST
Abstract
This invention discloses an electrolyte, its preparation method, and its application. The electrolyte comprises a deep eutectic solvent and an electrolyte salt. The deep eutectic solvent includes hydrogen bond acceptors and hydrogen bond donors, with a molar ratio of 1:(0.2-5). The electrolyte salt includes at least one of zinc, aluminum, magnesium, iron, calcium, manganese, cobalt, antimony, or bismuth salts. This electrolyte provides anions and cations that can act on the insertion and extraction of the positive electrode active material of the battery. The electrolyte has a wide voltage range and is a novel electrolyte system using a deep eutectic solvent. When used in aqueous batteries (e.g., with a zinc-containing negative electrode), it can suppress the formation of zinc dendrites, resulting in dendrite-free aqueous batteries with fewer side reactions. The resulting batteries exhibit good cycle stability and high coulombic efficiency.
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