The present invention relates to an electrode material for a sodium-ion battery, in particular, the present invention relates to an electrode material suitable for use as an anode of a sodium-ion battery wherein the electrode material comprises sodium titanate. In an aspect of the present invention,
The present invention relates to an electrode material for a sodium-ion battery, in particular, the present invention relates to an electrode material suitable for use as an anode of a sodium-ion battery wherein the electrode material comprises sodium titanate. In an aspect of the present invention, the electrode material comprises a sodium titanate having the formula Na3+xTi3O7, wherein the value of x is defined as −0.5≦x≦0.3, wherein said material is an intermediate phase between Na2Ti3O7 and Na3+xTi3O7.
대표청구항▼
1. An electrode material for a sodium ion battery, the material comprising a sodium titanate having the formula Na3+xTi3O7, wherein the value of x is defined as −0.5≦x≦0.3. 2. The electrode material according to claim 1, wherein the sodium titanate has a formula of Na3Ti3O7. 3. The electrode materia
1. An electrode material for a sodium ion battery, the material comprising a sodium titanate having the formula Na3+xTi3O7, wherein the value of x is defined as −0.5≦x≦0.3. 2. The electrode material according to claim 1, wherein the sodium titanate has a formula of Na3Ti3O7. 3. The electrode material according to any one of claim 1 or 2, wherein the electrode is an anode, and the material is an intermediate phase between Na2Ti3O7 and Na3+xTi3O7 when cycled against a cathode material having a higher voltage in an electrolyte. 4. The electrode material according to claim 3, wherein the electrolyte is a carbonate-based electrolyte. 5. The electrode material according to claim 3, wherein the cathode material is a sodium metal. 6. The electrode material according to any one of the preceding claims, wherein the material further comprises a carbon matrix. 7. A sodium-ion battery comprising (a) an anode;(b) a cathode;(c) a separator disposed between the anode and the cathode, the separator is configured to conduct sodium ions; and(d) an electrolyte,wherein the anode comprises a material, the material comprising a sodium titanate having the formula Na3+xTi3O7, wherein the value of x is defined as −0.5≦x≦0.3. 8. The battery according to claim 7, wherein the material is an intermediate phase between Na2Ti3O7 and Na4Ti3O7 when cycled against a cathode material having a higher voltage in a carbonate-based electrolyte. 9. The battery according to claim 8, wherein the cathode material is a sodium metal. 10. A method of producing an electrode for a sodium ion battery, the method comprising: (a) providing a sodium source and a titanium source; and(b) reacting the sodium source and titanium source in a solvo-thermal reaction in the presence of a carbon source and a medium to form a sodium titanate electrode material,wherein the electrode is formed by loading the sodium titanate electrode material with a conductive additive and a binder. 11. The method according to claim 10, wherein the sodium source is sodium hydroxide and the titanium source is titanium isopropoxide. 12. The method according to any one of claim 10 or 11, wherein the conductive addictive is a Super P carbon and the binder is a sodium salt of carboxymethyl cellulose (CMC). 13. The method according to any one of claims 10 to 12, wherein the electrode material is Na2Ti3O7. 14. The method according to claim 13, wherein the electrode is an anode, and the material forms an intermediate phase between Na2Ti3O7 and Na3+xTi3O7 when cycled against a cathode material having a higher voltage in an electrolyte, wherein the value of x is defined as −0.5≦x≦0.3. 15. The method according to claim 14, wherein the electrolyte is a carbonate-based electrolyte. 16. The method according to any one of claims 10 to 15, wherein the weight ratio of the electrode material, Super P carbon and CMC is 80:10:10, or 70:20:10. 17. An electrode obtained by a method according to any one of claims 10 to 16. 18. The electrode according to claim 17, wherein the electrode is an anode. 19. A battery comprising an anode, an electrolyte and a cathode, wherein the anode is an electrode according to claim 17.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.