| abstract |
The present invention relates to sodium ion-storage material and a sodium ion cell electrode materials, sea water battery electrode materials, a sodium-ion battery electrode, sea water battery electrode, a sodium-ion battery, and sea water battery comprising the same, specifically, Cu x S, FeS, Is a sodium ion storage material comprising at least one material selected from the group consisting of FeS 2 , Ni 3 S, NbS 2 , SbO x , SbS x , SnS and SnS 2 (where 0 <x ≦ 2) . The use of the sodium ion storage material according to the present invention can maintain a high discharge capacity and can exhibit excellent charge / discharge cycle characteristics when applied to a sodium ion battery as a secondary battery. |