Liyang Iopsilion Battery Materials Co., Ltd.

Iopsilion silicon monoxide (SiOx) anode materials come in two generations: a high-capacity type and a high-first-efficiency type. Modified SiOx technology improves first-cycle efficiency, and the products have entered the low-percentage silicon-blend energy-storage supply chain of CATL, meeting the demands of high-energy-density lithium-ion batteries.

Specific capacity: 1500-1700mAh/g (high-capacity type); First-cycle efficiency: 75-80% (high-capacity type); Specific capacity: 1300-1400mAh/g (high-first-efficiency type); First-cycle efficiency: 88-91% (high-first-efficiency type); Compatible systems: lithium-ion batteries above 300Wh/kg

• Electric vehicles
• Grid-scale energy storage
• Consumer electronics
• Power tools

Iopsilion nano silicon-carbon (Si-C) composite anode material is one of the company's core silicon-based anode product lines. A low-swelling Si-C composite structure with carbon coating combines high capacity with long cycle life, delivers internationally leading performance, and is widely used in electric vehicles, consumer electronics and grid-scale energy storage.

Specific capacity: 650mAh/g (standard type); First-cycle efficiency: ≥88% (standard type); Specific capacity: 400mAh/g (high-first-efficiency type); First-cycle efficiency: ≥93% (high-first-efficiency type); Swelling behavior: low swelling

• Electric vehicles
• Consumer electronics
• Grid-scale energy storage

Iopsilion's flagship product uses a chemical vapor deposition (CVD) process with high-purity silane as the silicon source: nano silicon particles are generated in situ from the gas phase within a porous carbon skeleton followed by secondary carbon coating, suppressing the roughly 300% volume expansion of silicon. It suits ultra-high energy density battery systems above 400Wh/kg and has entered the supply chains of Tesla 4680 cells and leading battery manufacturers at home and abroad.

Specific capacity: 2700mAh/g; Gram capacity: 2473mAh/g; First-cycle efficiency: ≥95.6%; Volume expansion: ≤300%; Compatible energy density: ≥400Wh/kg; Material cost: 180000 CNY/tonne (biomass porous carbon route)

• New energy vehicles (systems above 400Wh/kg)
• Tesla 4680 cells
• Consumer electronics
• Solid-state / semi-solid-state batteries

Iopsilion is one of the earliest Chinese companies to develop oxide ceramic solid-state electrolytes. Its products are mainly LATP (first generation) and LLTO/LLZO (second generation), deliverable in bulk as powders or slurries, and supply solid-state battery makers such as WeLion New Energy; a third generation of new solid-state electrolytes with ultra-high ionic conductivity is under development.

Particle size D50: 4μm (LATP powder); Ionic conductivity: ≥0.1mS/cm (LATP); Production capacity: 3000 tonnes/year; Form: powder/slurry; Generations: 1st-gen LATP / 2nd-gen LLTO·LLZO / 3rd-gen under development

• Solid-state batteries
• Semi-solid-state batteries
• Solid-state battery makers such as WeLion New Energy

Iopsilion hard carbon anode material is developed for sodium-ion batteries via a biomass-derived hard carbon route. Together with the company's silicon-based anodes and solid-state electrolytes, it forms a product matrix covering the three next-generation battery directions of lithium, sodium and solid-state, with current hard carbon capacity of about 10000 tonnes/year.

Route: biomass-derived hard carbon; Production capacity: 10000 tonnes/year; Specific capacity: 280-320mAh/g (typical hard carbon); Application system: sodium-ion batteries

• Sodium-ion batteries
• Grid-scale energy storage
• Low-speed electric vehicles

The Iopsilion ionic conductor series comprises oxide ceramic ionic conductor materials, mainly LATP, available as oil-based slurries and coated separators. They improve interfacial ion transport efficiency in solid-state and semi-solid-state batteries and are supplied in synergy with the solid-state electrolyte product line.

Slurry particle size D50: 300nm (LATP oil-based slurry); Coated separator thickness: 15μm; Form: powder/oil-based slurry/coated separator; Types: LATP/LLZO/LLTO

• Solid-state batteries
• Semi-solid-state batteries
• Ionic-conductor coated separators

High-purity silane is the core silicon-source raw material for the Iopsilion CVD nano silicon-carbon anode process, generating nano silicon particles in situ from the gas phase. The company has industrialized silane purification and CVD safety control capabilities, supporting large-scale mass production of vapor-phase silicon-carbon anodes.

Use: silicon source for CVD nano Si-C anodes; Form: high-purity silane gas; Purity: ≥99.999% (typical electronic grade); Boiling point: -112°C (typical); Route: chemical vapor deposition (CVD)

• CVD silicon-carbon anode production
• Silicon-based anode raw material

Iopsilion offers customizable graphite anode materials as a bulk anode product alongside its silicon-based anodes, supporting the company's platform-level anode material supply capability, with current customizable graphite anode capacity of about 20000 tonnes/year.

Production capacity: 20000 tonnes/year; Type: customizable graphite anode; Specific capacity: 340-360mAh/g (typical graphite); Form: anode material

• Lithium-ion batteries
• Electric vehicles
• Consumer electronics
• Grid-scale energy storage