High-Performance Pre-Lithiated SiO Anode Material 1500 mAh/g, 89.5% Efficiency

Overview of High-Performance Pre-Lithiated SiO Anode Material

Our Pre-Lithiated Silicon Oxide (SiO) Anode Material is a next-generation negative electrode material for lithium-ion batteries, manufactured through carbon composite coating and solid-phase pre-lithiation of silicon monoxide (SiO). By introducing external lithium sources during synthesis, stable phases such as lithium silicate are formed within the silicon-oxygen structure, effectively compensating for irreversible active lithium loss during the initial charge-discharge cycle. This significantly improves the initial Coulombic efficiency while delivering exceptional specific capacity, making it the optimal anode solution for high-energy-density battery systems.

Features of High-Performance Pre-Lithiated SiO Anode Material

• Dramatically Improved First-Cycle Efficiency: Pre-lithiation treatment elevates the initial Coulombic efficiency from ~70% (conventional SiO) to 86%–92%, minimizing irreversible capacity loss and providing critical support for energy density enhancement.
• High Specific Capacity: Delivers a reversible capacity of 1500–1600 mAh/g, substantially outperforming traditional graphite anodes to boost cell-level energy density.
• Excellent Cycling Stability: The surface carbon coating effectively suppresses electrolyte erosion, promotes the formation of a stable SEI (Solid Electrolyte Interphase) film, and extends cycle life. Selected grades retain >80% capacity after over 1200 cycles.
• Good Rate Performance: Suitable for high-rate charge/discharge applications, meeting the fast-charging demands of power batteries and consumer electronics. Compatible with high-energy-density liquid, hybrid solid-state, and all-solid-state batteries.
• Dual-Function Carbon Coating Layer: The surface carbon layer not only enhances electronic conductivity and resists electrolyte attack but also serves as a buffering medium during pre-lithiation, optimizing the electrochemical performance of the final material.

Applications of High-Performance Pre-Lithiated SiO Anode Material

Compatible with all mainstream lithium-ion battery form factors, including:

• Cylindrical cells
• Pouch cells
• Prismatic cells

Specifications of High-Performance Pre-Lithiated SiO Anode Material

Parameter	Unit	Specification	Test Method
Moisture Content	%	≤ 0.5	Electronic Moisture Tester (DHS-16A)
Particle Size D10	µm	5.0 ± 1.0	Malvern Laser Diffraction (Mastersizer 3000)
Particle Size D50	µm	8.0 ± 1.0	Malvern Laser Diffraction (Mastersizer 3000)
Particle Size D90	µm	14.0 ± 1.0	Malvern Laser Diffraction (Mastersizer 3000)
Tap Density	g/cm³	1.15 ± 0.15	Tap Density Tester (Bettersize BT-301)
Specific Surface Area (BET)	m²/g	1.0 ± 0.5	BET Surface Area Analyzer (ASAP 2460)
Carbon Content	%	4.0 ± 1.0	Infrared Carbon-Sulfur Analyzer (HCS-140)
Reversible Capacity	mAh/g	≥ 1350	LAND Battery Test System (CT2001A)
Initial Coulombic Efficiency	%	≥ 89.5	LAND Battery Test System (CT2001A)

Recommended Coin Cell (CR2032) Preparation & Testing

Slurry Formulation (Weight Ratio):
XYGY-3 : Super P : CN1 Binder = 8 : 1 : 1

Slurry Preparation Procedure:

1. Weigh 339 g of CN1 binder and add to 1161 g of ultrapure water. Stir at 600 rpm for 300 minutes until uniformly dispersed.
2. Weigh 1.728 g of XYGY-3 active material and 0.216 g of Super P into a mixing jar. Grind gently for 10 minutes.
3. Add 6.371 g of the pre-prepared CN1 binder solution to the jar and seal.
4. Stir on a magnetic stirrer for 360 minutes to obtain the final slurry.
5. Coat the slurry onto copper foil and dry the coated negative electrode at 80°C under vacuum for 12 hours.

Coin Cell Testing Protocol (3 Cycles):

• Step 1: Rest 6h, then discharge at 0.1C to 0.005V.
• Step 2: Rest 5min, discharge at 0.02C to 0.005V.
• Step 3: Rest 5min, discharge at 0.1C to 0.005V.
• Step 4: Rest 5min, charge at 0.1C to 1.5V.
• Step 5: Rest 5min, return to Step 2 and repeat for 3 cycles.

Cycle Performance Conditions:

• Charge: 0.5C / 1.5V
• Discharge: 0.5C / 0.005V → 0.1C / 0.005V → 0.05C / 0.005V

Particle morphology:

Packaging of High-Performance Pre-Lithiated SiO Anode Material

XYGY-3 is sealed in moisture-proof bags, then packed into cardboard cartons. Net weight is customized according to customer requirements.

Transportation & Storage of High-Performance Pre-Lithiated SiO Anode Material

• Handling: Handle with care during transport to avoid damaging the packaging.
• Spillage: Do not use or return any product that has spilled due to damaged packaging.
• Storage Conditions: Store in a dry, well-ventilated environment. Keep containers sealed at all times.

Company Profile

Luoyang Tongrun Nano Technology Co., Ltd. (TRUNNANO) is a global supplier and manufacturer of high-performance battery materials. We specialize in lithium-ion, sodium-ion, and other advanced battery materials, serving 3C electronics, power batteries, and energy storage systems.

Our products include nano cobalt oxide, nano manganese oxide, silicon-carbon anode materials, hard carbon, NFPP, alumina, boron nitride, and more. All are produced under strict quality control, supported by our in-house lab and professional technical team.

If you are looking for reliable battery materials, feel free to contact us or send an inquiry.

Payment Methods

L/C, T/T, Western Union, Paypal, Credit Card, etc.

Shipment

By sea, by air, or by express upon payment receipt.

FAQs of High-Performance Pre-Lithiated SiO Anode Material

1. What is the typical initial Coulombic efficiency of this material?
The initial Coulombic efficiency ranges from 86% to 92%, depending on the specific grade and testing conditions, with the typical guaranteed value at ≥89.5%. This is a significant improvement over conventional non-pre-lithiated SiO (around 70%).

2. What is the reversible specific capacity?
The material delivers a reversible capacity of 1500–1600 mAh/g, with a minimum guaranteed value of 1350 mAh/g in coin cell testing.

3. How does the carbon coating benefit the material?
The carbon layer serves two critical purposes: (1) it enhances electronic conductivity for better rate performance, and (2) it acts as a protective barrier against electrolyte corrosion, promoting a stable SEI layer that extends cycle life. It also buffers the pre-lithiation reaction for superior final electrochemical properties.

4. What battery formats is this material compatible with?
The material is compatible with cylindrical, pouch, and prismatic lithium-ion battery designs, and is suitable for liquid, hybrid solid-state, and all-solid-state battery systems.

5. How should the material be stored and handled?
Store in a dry, well-ventilated area, and keep packaging sealed to prevent moisture ingress. During transport, avoid rough handling to prevent package damage. Any material spilled from broken packaging should be discarded and not returned to the container.