Irregular Hard Carbon for High-Capacity Battery Anode Materials
Hard carbon materials have high reversible specific capacity, generally 500--700mAH
Spherical hard carbon is the anode electrode material of power lithium-ion batteries and Na-ion batteries. The hard carbon structure is stable and the charge and discharge cycle life is long. The potential of carbon lithium can be higher than 0.2V, and the safety performance is better.
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Name |
Spherical Hard carbon |
Micro Morphology |
Spherical particle |
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Package Specification |
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Appearance |
Black powder |
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Main Technical Parameters |
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Item |
Standard |
Method orInstrument |
Itemn |
Standard |
Method or'Instrument |
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Particle Size Distribution |
D10(μm) |
3.13 |
OMEC LS-POP (9)
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Tap density |
≥0.05 |
Vibration density tester
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D50(μm) |
7.56 |
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D90(μm) |
15.17 |
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Ash content |
<0.5 |
Muffle Furnace 2g samples 800°C5-6h to constant weight |
Specific surface area |
<3.0 |
Dynamic Adsorption Specific Surface Area Analyzer |
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Specific Capacity (Half Cell) (mAh/g) |
≥ 315 |
Charge-Discharge Tester |
Initial Efficiency (%) |
≥ 88 |
Charge-Discharge Tester |
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Moisture Content (%) |
≤ 0.5 |
Karl Fischer Coulometer |
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Spherical Hard Carbon Powder SEM Image
Company Profile
Xiamen AOT battery equipment Technology Co LTD was set up as a manufacturer in 2006. We have total manufacturing facilities of around 4, 000 square meters and more than 65 staff. Owning a group of experienced engineers and staffs, we can bring you not only reliable products and technology, but also excellent services and real value you will expect and enjoy. AOT Battery has been focused on product development and operations of lithium battery and its surrounding, we supply full kinds of lithium-ion battery equipment, lab battery raw materials and lithium-ion battery research and development technology.
Exhibition
AOT Lithium Battery Equipment exhibition provides exhibitors and visitors with a comprehensive platform for display, exchange, cooperation and trade. By participating in the exhibition, enterprises can understand the industry dynamics, expand market channels, enhance brand image and promote technological innovation and industrial upgrading.
Certificate
Cooperative
FAQ
Q1: What is spherical hard carbon? What are its advantages compared to ordinary hard carbon?
Spherical hard carbon is a type of hard carbon material obtained by granulating, shaping, and carbonizing the hard carbon precursor through various processes. It belongs to the high-end modified category of hard carbon.
Compared to ordinary amorphous hard carbon, the spherical morphology brings three core advantages: ① The powder's fluidity is significantly improved, making it more suitable for automated high-speed electrode coating processes; ② The compactness is higher, which can significantly enhance the volume energy density of the negative electrode electrode sheet; ③ The particle morphology is uniform and consistent, resulting in better electrolyte wettability and stronger cycle stability.
Q2: What is the basic appearance and microscopic form of this spherical hard carbon?
This product has a macroscopic appearance of **black powder**, with uniform color, no lumps, and no visible impurities; the microscopic morphology is regular spherical particles, achieved through shaping processes to achieve controllable morphology.
Q3： What significance does a specific surface area of ≤3.0m²/g have for the battery?
Specific surface area refers to the total surface area of a unit mass of material， which directly affects the first Coulomb efficiency and electrolyte consumption of the anode.
This product has a specific surface area of ≤3.0m²/g， which belongs to low specific surface area hard carbon. It can effectively reduce the lithium consumption during the formation of the SEI film during the first charge and discharge process， improve the first efficiency， and at the same time reduce the amount of electrolyte additives and control the risk of battery gas production.
Q4: Can this spherical hard carbon be used in combination with graphite negative electrode?
OK. When spherical hard carbon is combined with natural graphite and artificial graphite, it can leverage the high capacity and high compaction advantages of graphite, as well as the fast charging, low temperature, and long cycle advantages of hard carbon. It is commonly used in fast-charging power batteries and low-temperature energy storage batteries, etc. The proportion of the combination can be flexibly adjusted according to the performance requirements of the battery.
![Mg[B(HFIP)4]2](/uploadfile/202401/09/15f1a3930e925703c1b1aaa1833dc2cb_medium.jpg)
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