Asphalt-based sodium ion battery negative electrode material and preparation method thereof

By using chlorine as an oxidant, the microstructure of the asphalt-based sodium-ion battery anode material is controlled. By combining the oxidation-infusible and carbonization steps, the problem of the single type of oxidant in the existing technology is solved, and a synergistic breakthrough of high capacity and high first-efficiency is achieved.

CN122079124APending Publication Date: 2026-05-26山西豪仑科化工有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
山西豪仑科化工有限公司
Filing Date
2026-02-27
Publication Date
2026-05-26
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Abstract

The invention discloses an asphalt-based sodium-ion battery negative electrode material and a preparation method thereof, and relates to the technical field of sodium-ion batteries, and the preparation method comprises the following steps: taking coal asphalt as a raw material, diluting chlorine with nitrogen as an oxidative dehydrogenation agent, and carrying out thermal polycondensation treatment to prepare blended asphalt with a softening point of 230-285 DEG C; and after crushing, carrying out oxidation non-melting treatment in air, and carbonizing to obtain the sodium battery negative electrode material. The sodium-ion battery negative electrode material prepared by the invention has high electrochemical capacity and excellent cycle stability.
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Citation Information

Patent Citations

  • Asphalt-based sodium ion battery negative electrode material and preparation method thereof

    CN118289736A

  • Asphalt-based sodium ion battery negative electrode material and preparation method thereof

    CN121020551A