Electrolyte Composition and Primary Cell Containing the Electrolyte Composition and in Particular Nano-Particulate Silicon Particles

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This patent describes a primary cell (non-rechargeable battery) and an associated electrolyte composition that uses nano- to micro-particulate silicon (0.1–20 μm) as the anode material, instead of typical lithium or zinc. The cells utilize a manganese dioxide cathode and an alkaline, aqueous electrolyte containing special polyalkyleneoxide compounds (e.g., PEG, Tween) to inhibit silicon corrosion, improve cell life, and enhance performance. The invention can also form multi-cell batteries and battery systems, with possible computer-controlled management of electrolyte and operating conditions.

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

• Primary batteries for hearing aids, medical devices, and portable electronics
• Battery systems for electric vehicles, e-bikes, and electric buses, especially where sustainability and recyclability are important
• Energy storage for decentralized electricity grids or renewable energy buffering
• Backup power sources where non-rechargeable primary cells are needed
• Applications requiring environmentally friendly and recyclable battery components
• Use of silicon wafer manufacturing byproducts (sawdust, offcut silicon) as battery material, promoting waste recycling
• Advanced battery management systems using data processing and controlled electrolyte management

BenefitsContent extracted from patent full text and abstract with AI.

• Uses silicon as anode, a widely available and abundant element, lowering dependency on scarce metals like lithium
• Improved performance, energy density, and initial voltage compared to traditional silicon primary cells due to optimized anode and electrolyte composition
• High recyclability and environmental friendliness due to use of recyclable materials and the potential for upcycling industrial silicon waste
• Reduced cost by avoiding precious metals and lithium
• Enhanced battery lifespan and safety thanks to advanced electrolyte compositions that inhibit corrosion and unwanted side reactions
• Possibility for scalable battery systems (from small cells to large batteries) with improved manageability and monitoring
• Avoids the use of lithium, reducing fire risks and regulatory constraints associated with lithium batteries

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Inventors & Applicants

Patent Abstract

The subject matter of the invention is a primary cell with silicon as anode material in the form of silicon particles with a particle size in the range of 0.1 µm to 20 µm. Likewise, the subject matter of the invention is a multi-cell battery as well as a system comprising such a battery.