Waste Accumulators Reclaiming TRIZ Cases

Passivating reactive ASSB materials before agitation enables safer recovery of lithium, charge materials, and solid electrolyte.

Acid leaching with a sulfiding agent and partial leachate recycling separates copper and yields a high-concentration nickel-cobalt solution.

Nitric acid with a sulfiding agent precipitates copper from Cu-Ni-Co battery alloys, leaving nickel and cobalt in solution for cleaner recovery.

Perpendicular press-and-cut motion breaks battery housings with fewer fine chips, easing disassembly and improving battery recycling quality.

Cryolite seed crystals and an aluminum-based agent accelerate fluorine removal from battery leachate to below 20 mg/L with minimal impurities.

Neutralizing HF in fluorine-containing electrolyte to pH 6-8 helps reused lithium-ion electrodes avoid LiF buildup and lower internal resistance.

Calcium carbonate stabilizes oxidative roasting of waste lithium-ion batteries, improving carbon and phosphorus removal while lowering energy cost.

Controlled oxidative roasting at 600-900°C cuts carbon and phosphorus in waste Li-ion battery smelting, lowering energy use and easing metal recovery.

Strong oxidizers at pH 1.5+ remove lithium from Li-Ni oxides while improving nickel yield, capacity, and crystal structure retention.

Pressurized CO2 in water selectively leaches Li and Al from waste positive electrodes, then degassing precipitates Al to simplify recovery.

Controlling the carbon-to-nickel ratio forms Ni-based alloy particles in a separable size range, cutting atomization cost, leaching time, and CO2 emissions.

Mild CO2, amine, and copper-ion precipitation separates iron, manganese, nickel, and cobalt into marketable salts from polymetallic liquids.

Sodium thiosulfate leaching and staged precipitation cut copper and phosphorus carryover while producing a Li/Co-rich solution from spent lithium-ion batteries.

Heat treatment with a chlorine precursor converts aluminum in battery black mass into separable aluminum chloride gas, improving lithium purity and recovery.

Keeping total lithium ion concentration below the lithium salt solubility limit prevents precipitates and stabilizes continuous nickel extraction.

Sodium thiosulfate leaching, pH-driven aluminum precipitation, and oxidation remove impurities while yielding a Li/Co-rich solution.

Sequential precipitation with two different bases removes metals and sulfate separately, yielding purer lithium hydroxide with lower impact.