Method for preparing silicon anode active material in which nano-silicon mixture is inserted into pores of coffee grounds

This invention describes a method to create a high-capacity anode material for lithium-ion batteries using waste coffee grounds. It works by preparing nano-silicon, then mixing it with various chemicals and the coffee grounds through several dispersion and heat treatment steps. The goal is to insert the nano-silicon mixture into the pores of the coffee grounds, creating a battery material that is both high-performing and environmentally friendly.

Why it matters: Filed only three years ago, the core challenges of scaling this complex, multi-step chemical process with specialized equipment, and ensuring consistent performance from a biomass like coffee grounds, likely remain. The abandonment suggests that the technical and economic hurdles outweighed the environmental and cost-saving benefits at that time.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: SpecializedChemical synthesis, specialized mixing equipment, material science.

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