Non-aqueous Aluminum-Ion Secondary Battery with a Quasi-Solid Electrolyte and Electrochemically Activated Cathode Material with High Specific Capacity

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This invention describes a non-aqueous aluminum-ion secondary battery that utilizes a quasi-solid electrolyte composed of room-temperature ionic liquids and/or deep eutectic solvents in combination with high-capacity, electrochemically activated cathode materials. The battery design also includes additives containing or forming divalent metal cations (such as copper ions) to catalytically enhance cathode performance. The result is an aluminum-ion battery with improved specific capacity, cycle stability, and operational safety compared to existing technologies.

Use CasesContent extracted from patent full text and abstract with AI.

• Grid-level renewable energy storage and backup systems
• Portable electronics requiring safer and higher-capacity batteries
• Electric vehicles seeking alternatives to lithium-ion batteries
• Industrial and commercial energy storage to balance power supply and demand
• Compact batteries for IoT, sensors, and wearable devices

BenefitsContent extracted from patent full text and abstract with AI.

• Higher specific capacity and voltage compared to conventional aluminum-ion batteries, rivaling lithium-ion technology
• Uses abundant and inexpensive aluminum instead of resource-limited lithium, lowering material cost and supply risks
• Quasi-solid electrolyte increases safety by reducing leakage and risk of short-circuits
• Improved cycle stability and operational life due to the catalytic effect of divalent metal cations
• Greater operational safety, including reduced fire and explosion hazards
• Potentially simpler battery assembly with fewer separator requirements
• Adaptability to various cathode and electrolyte compositions, offering design flexibility

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Patent Abstract

The invention relates to an aluminium secondary battery comprising at least one positive electrode, at least one negative electrode, at least one electrolyte and at least one additive, the electrolyte comprising at least one room temperature ionic liquid (RTIL) made of at least one organic salt and at least a first aluminium salt, and/or at least one deep eutectic solvent (DES) made of at least one organic solvent and at least a first aluminium salt, the additive containing bivalent metal cations and/or being suitable for forming bivalent metal cations.