Product Overview

Hard carbon refers to carbon that is difficult to graphitize, usually obtained by pyrolyzing cross-linked resins with special structures at around 1000℃. Common types of hard carbon include resin carbon, organic polymer pyrolytic carbon, and carbon black. In sodium-ion batteries, hard carbon is also a highly regarded anode material. As the main component for sodium storage in batteries, anode materials play a decisive role in battery development. Compared to other sodium-ion battery anode materials, hard carbon is characterized by disordered internal crystal arrangement and large interlayer spacing, which allows hard carbon anodes to store more charge per unit volume, thereby improving the energy density and endurance of sodium-ion batteries.At the same time, because hard carbon has a larger pore structure that can accommodate more sodium ions, the electrode expands and contracts more evenly during the discharge process, enhancing its cycle stability and charge-discharge performance, and extending the lifespan of sodium-ion batteries. Currently, sodium-ion batteries have become a research and industrial hotspot both domestically and internationally. With the advancement of related research and technology, the market size for hard carbon anode materials is expected to continue growing.However, a consensus has not yet been reached on the sodium storage mechanism of hard carbon, and further research is needed to reveal the structure–activity relationship with the electrochemical reaction mechanism, as well as to explore the impact of the physical parameters of hard carbon materials on electrochemical performance.

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