Li-ion Anode Materials

Introduction of Spherical Graphite

Spherical graphite is primarily used in the anode material of lithium-ion batteries (LIBs). Its spherical shape enhances the packing density and improves the performance of the battery by allowing more efficient electrolyte penetration and better electron flow. This type of graphite is usually produced from natural flake graphite through a series of processes including grinding, shaping, and purification to achieve the desired particle size and spherical morphology.

Features of Spherical Graphite

• High Purity: Spherical graphite typically has a high level of purity, which is essential for battery performance.
• Uniform Particle Size Distribution: The particles are uniform in size, which helps in achieving consistent performance across the anode.
• High Tap Density: The spherical shape allows for a higher tap density, meaning more graphite can be packed into a given volume, leading to increased energy density in batteries.
• Low Surface Area: Compared to irregularly shaped graphite, spherical graphite has a lower specific surface area, which reduces the amount of electrolyte decomposition and improves the first cycle efficiency.
• Good Conductivity: It maintains good electrical conductivity, which is crucial for the efficient operation of the battery.
• Excellent Cyclic Stability: Spherical graphite exhibits good stability during charge and discharge cycles, contributing to the longevity of the battery.

Applications of Spherical Graphite

• Lithium-Ion Batteries (LIBs): The primary application of spherical graphite is in the anodes of LIBs, where it serves as a key component due to its ability to intercalate lithium ions efficiently.
• Electric Vehicles (EVs): Due to the increasing demand for EVs, the use of spherical graphite in their batteries is growing, as it provides the necessary power and energy storage capabilities.
• Portable Electronics: Spherical graphite is also used in the batteries of portable electronic devices such as smartphones, tablets, and laptops, where it helps in providing long-lasting battery life.
• Energy Storage Systems (ESS): In large-scale energy storage systems, spherical graphite plays a role in stabilizing the grid and storing renewable energy.
• Other Industrial Uses: Besides batteries, spherical graphite may find use in other industries where its properties are beneficial, such as lubricants, refractories, and foundry coatings.

About us

Graphite-corp was founded in 2008 and is a high-tech enterprise specializing in the researching and developing, producting, and sales of graphite materials. Our products include but not limited to Flake Graphite, Expandable Graphite, Spherical Graphite, Graphite Powder, Medium Carbon Flake, High Carbon Flake and High Purity Graphite, etc. If you are interested, please feel free to contact us!(sales@graphite-corp.com)

Payment Term

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

Shipment Term

By sea, by air, by express, and as customers request.

Storage conditions

1) Store in a dry environment at room temperature.

2) Avoid damp and high temperature.

3) Use immediately after opening the inner packing bag.

FAQs

What is spherical graphite?

Spherical graphite is a natural or synthetic graphite that has been processed to be spherical in shape. This special form of graphite is mainly used as anode material in lithium-ion batteries because its shape can increase packing density and thus improve battery performance.

How does spherical graphite differ from flake graphite?

Shape difference: Spherical graphite has a round or oval structure, while flake graphite is flat and thin.
Application: Spherical graphite is more suitable for lithium-ion batteries because it can provide higher energy density; flake graphite is often used in traditional industrial applications such as lubricants and refractory materials.
Processing: Spherical graphite is usually prepared from natural graphite through a series of process steps such as grinding, forming and purification.

How is spherical graphite made?

Spherical graphite is usually made from natural flake graphite through a series of physical and chemical treatment processes. These processes may include crushing, grading, heat treatment and surface modification steps to obtain the desired spherical particle size and uniformity.

What is the role of spherical graphite in lithium-ion batteries?
Spherical graphite is one of the main components of the negative electrode of lithium-ion batteries. It allows lithium ions to be reversibly inserted and removed between its layers, a process called intercalation reaction. Due to its good conductivity and high packing density, spherical graphite helps to improve the energy density and cycle stability of batteries.

• What are the advantages of spherical graphite?
• High purity
• Uniform particle size distribution
• High packing density
• Low specific surface area
• Good conductivity
• Excellent cycle stability

What is the market outlook for spherical graphite?

With the growing demand for high-performance lithium-ion batteries in electric vehicles (EVs), portable electronics, and energy storage systems, the demand for spherical graphite is also rising. The spherical graphite market is expected to continue its growth trend in the next few years.

What is the environmental impact of spherical graphite?

Although spherical graphite itself is relatively environmentally friendly, its production and processing may generate a certain amount of waste and pollution. Therefore, manufacturers are working to develop more sustainable and environmentally friendly production methods, such as using clean energy for production and optimizing production processes to reduce waste.