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Korea Advanced Institute of Science and Technology

Jong Min Yuk

Jae Yeol Park

Ho Jun Lee

Sung Joo Kim

Jungjae Park

The present disclosure relates to a sodium-ion storage material including a doped compound, and an electrode material for a sodium-ion battery, an electrode for a sodium-ion battery, and a sodium-ion battery, which include the sodium-ion storage material. Specifically, the sodium-ion storage material may include a compound consisting of an NaVM(PO)F/NaVM(PO)composite (M=Fe, Mn, Cr, Cu, Zn or Ti, 0<x,y≤2). When the sodium-ion storage material according to the present disclosure is used, it may maintain high discharge capacity while reducing the vanadium content, and when the sodium-ion storage material is applied to a sodium-ion secondary battery or a sodium-magnesium hybrid-ion battery, the battery may exhibit excellent charge/discharge cycle characteristics.

Metal-doped sodium vanadium fluorophosphate/sodium vanadium phosphate (Na3V2(PO4)2F3/Na3V2(PO4)3) composite for sodium-ion storage material

The present disclosure relates to a sodium-ion storage material and an electrode material for a sodium-ion battery, an electrode material for a seawater battery, an electrode for a sodium-ion battery, an electrode for a seawater battery, a sodium-ion battery, and a seawater battery, which include the sodium-ion storage material. Specifically, the sodium-ion storage material may include one or more materials selected from the group consisting of CuS, FeS, FeS, NiS, NbS, SbO, SbS, SnS and SnS, wherein 0&#x3c;x&#x2264;2. When the sodium-ion storage material according to the present disclosure is used, it may exhibit high discharge capacity, and when the sodium-ion storage material is applied to a sodium-ion battery which is a secondary battery, it may exhibit excellent charge/discharge cycle characteristics.

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Daejeon, South Korea

Jong Min Yuk