Hard carbon material and preparation method and application thereof

The invention discloses a hard carbon material and a preparation method and application thereof, and belongs to the field of material synthesizing.According to the method, resin is used as a raw material to be compounded with an additive for pretreatment, so that optimal regulation and control on the molecular level of a material structure are achieved, meanwhile, a film-forming agent of a specific type and a specific ratio is introduced to improve the energy density of a final product, and the energy density of the final product is improved. And finally, a conductive agent is compounded to improve the basic conductivity of the product, so that the prepared hard carbon material has ideal sodium storage capacity, energy density and cycle reversibility when being applied to the negative electrode of the sodium-ion battery. 本发明公开了一种硬碳材料及其制备方法与应用，属于材料合成领域，该方法通过以树脂为原材料复配添加剂进行前处理，从而实现材料结构分子层面上的优化调控，同时引入特定种类及配比的成膜剂以提升最终产品的能量密度，最后复配导电剂提升产品的基础导电性，使得制备的硬碳材料在应用于钠离子电池负极时具有理想的储钠容量、能量密度和循环可逆性。