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Graphite is an older negative electrode material. Graphite is a more desirable negative electrode material than carbon materials. Its conductivity, crystallinity, and good layered structure are all better than those of other carbon materials.
Modifications: Optimize anode material performance
Graphite Negative Electrodes generally use natural flake graphite. But there are a few drawbacks.
(1) Flake graphite has a large surface area which can have a greater effect on the first charge of the negative electrode and its discharge efficiency.
(2) Li+ cannot penetrate the graphite’s layer structure and diffuse into the particles. Flake graphite has an anisotropy that makes the Li+ diffusion path long and uneven. This causes a low specific ability.
(3) The graphite’s layer spacing is too small. This increases Li+’s diffusion resistance, but also makes it less efficient at delivering high rates of charge. Li+ is easy for graphite to form lithium dendrites and deposit it on the graphite’s surface. This can pose serious safety hazards.
Natural graphite can be modified to address these issues using technologies such as surface oxidation and surface fluorination. After taking into account cost and performance, industrial graphite modification is primarily a carbon coating process. The specific capacity of modified natural graphite for commercial use has been 340-370mA*h/g. This is sufficient to supply small consumer electronics products with their basic needs. Specific requirements for battery performance.
Innovation: Tap the Potential of Graphite Applications
People are continuously aiming to improve the performance of lithium-ion battery technology, with a focus on higher energy density and long life. This results in a higher graphite-anode requirement.
Graphite concentrate is able to be further processed to make graphite products. These include graphene (spheroidized graphite), flexible graphite (fluorinated graphite), nuclear graphite or silicon-impregnated graphite), flexible graphite (spheroidized graphite), flexible graphite and fluorinated graphite. This will allow graphite to be used in lithium batteries at a higher level. Graphene is a good conductor and can help reduce volume expansion in electrode materials. This will greatly increase the power battery’s performance. Graphene is used widely in lithium-ion batteries’ negative and positive electrodes. Current collectors, separators. conductive adds. The future market opportunities are very broad, so it is the center of current research. Spherical graphite features good electrical conductivity and high crystallinity. It is used to replace negative electrode materials in the production of lithium ion batteries, both at home and overseas.
Tech Co., Ltd. is a professional supplier of graphite powder with more than 12 years’ experience in chemical product development and research. We accept credit cards, T/T and Paypal payments. We will ship goods overseas via FedEx, DHL and by air or sea to our customers.
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