Abstract: The invention discloses a sodium ion secondary battery anode material, and a preparing method and application thereof. The material is an amorphous carbon material, and is obtained by performing high-temperature pyrolyzing on coal as a main raw material, the material is prepared by using coal and a hard carbon precursor as raw materials, mechanical mixing after adding a solvent, drying, and crosslinking, curing and pyrolyzing under an inert gas atmosphere, or prepared by using coal as a raw material, and pyrolyzing under an inert gas atmosphere. The sodium ion secondary battery prepared from the amorphous carbon material as anode material has lower cost and higher work voltage, and is stable in cycle and good in safety.

Abstract: The invention discloses a sodium ion secondary battery anode material, and a preparing method and application thereof. The material is an amorphous carbon material, and is obtained by performing high-temperature pyrolyzing on coal as a main raw material, the material is prepared by using coal and a hard carbon precursor as raw materials, mechanical mixing after adding a solvent, drying, and crosslinking, curing and pyrolyzing under an inert gas atmosphere, or prepared by using coal as a raw material, and pyrolyzing under an inert gas atmosphere. The sodium ion secondary battery prepared from the amorphous carbon material as anode material has lower cost and higher work voltage, and is stable in cycle and good in safety.

Abstract: The present invention discloses a layered copper-containing oxide material and a preparation process and purpose thereof The material has a general chemical formula of Na0.68+aNibCucMdMneO2+?, where Ni, Cu, M, and Mn respectively form octahedral structures together with six oxygen atoms that are most adjacent therein, the octahedral structures have arrangements with common edges and constitute transition metal layers; alkali metal ions Na+ are located between every two of the transition metal layers; M is specifically one or more of Mg2+, Mn2+, Zn2+, Co2+, Al3+, B3+, Cr3+, Mn3+, Co3+, V3+, Zr4+, Ti4+, SiO4+, Mo4+, Ru4+, Nb4+, Sb5+, Nb5+, Mo6+, and Te6+; and a, b, c, d, e, ?, and m meet (0.68+a)+2(b+c)+md+4e=2(2+?), and b+c+d+e=1.