V2O5—LiBO2, V2O5—NiO—LiBO2 glasses and their composites obtained by nitrogen doping and reduced graphite oxide blending as cathode active materials

Patent metadata

Field	Value
Publication number	US-9911969-B2
Application number	US-201314384028-A
Country	US
Kind code	B2
Filing date	Mar 7, 2013
Priority date	Mar 9, 2012
Publication date	Mar 6, 2018
Grant date	Mar 6, 2018

Abstract

An electronically active glass has the composition (T x O y ) z -(M u O v ) w —(Na/LiBO 2 ) t wherein
T is a transition metal selected from V and Mo, M is a metal selected from Ni, Co, Na, Al, Mn, Cr, Cu, Fe, Ti and mixtures thereof, x, y, u, and v are the stoichiometric coefficients resulting in a neutral compound, i.e. x=2y/(oxidation state of T) and u=2v/(oxidation state of M), z, w and t are weight-%, wherein z is 70-80, w is 0-20 t is 10-30, and the sum of z, w and t is 100 weight-%, in particular V 2 O 5 —LiBO 2 and V 2 O 5 —NiO—LiBO 2 .

First claim

The invention claimed is:

1. A glass having a composition (V 2 O 5 ) z -(M u O v ) w —(LiBO 2 ) t , wherein
M u O v is selected from the group consisting of NiO, Co 3 O 4 , Na 2 O, Al 2 O 3 , MnO, MnO 2 , CrO 3 , CuO, Ni 2 O 3 , Fe 2 O 3 , TiO 2 , and mixtures thereof,
where u and v are stoichiometric coefficients resulting in a neutral compound such that u=2v/(oxidation state of M),
where z, w, and t are weight-% of (V 2 O 5 ), (M u O v ), and (LiBO 2 ) in the composition, respectively, wherein:
z is a number from 70-80,
w is a number greater than zero and up to 20,
t is a number from 10-30, and
a sum of z, w, and t equal to 100 weight-%.

2. The glass of claim 1 , wherein z is about 80, w is about 5, and t is about 15.

3. The glass of claim 1 , wherein w is at least 1 .

4. The glass of claim 3 , wherein the composition is nitrogen-doped.

5. The glass of claim 1 , wherein M u O v is NiO.

6. The glass of claim 2 , wherein M u O v is NiO.

7. The glass of claim 3 , wherein M u O v is NiO.

8. The glass of claim 1 , wherein M u O v is Na 2 O and/or Al 2 O 3 .

9. The glass of claim 2 , wherein M u O v is Na 2 O and/or Al 2 O 3 .

10. The glass of claim 3 , wherein M u O v is Na 2 O and/or Al 2 O 3 .

11. The glass of claim 1 , the glass being enriched with Li due to doping with Li 3 N.

12. A composite cathode material, comprising a glass of claim 1 together with carbon and/or graphite, the carbon and/or graphite obtained by reduction of graphite oxide.

13. A composite cathode material, comprising the glass of claim 5 together with carbon and/or graphite, the carbon and/or graphite obtained by reduction of graphite oxide.

14. A composite cathode material, comprising the glass of claim 8 together with carbon and/or graphite, the carbon and/or graphite obtained by reduction of graphite oxide.

15. A cathode, comprising the glass of claim 1 disposed on a current collector.

16. A cathode, comprising the composite cathode material of claim 12 disposed on a current collector.

17. A rechargeable battery, comprising the cathode of claim 15 , an anode, a diaphragm, and an electrolyte.

18. A rechargeable battery, comprising the cathode of claim 16 , an anode, a diaphragm, and an electrolyte.

19. A method for producing a glass of claim 1 , comprising:
providing a composition of (V 2 O 5 ) z -(M u O v ) w —(LiBO 2 ) t by mixing and grinding of z wt-% of V 2 O 5 , w wt-% of (M u O v ), and t wt-% LiBO 2 ;
heating the mixture to a temperature and for a time to form a homogenous melt, but not over 900° C.; and
quenching the heated mixture.

20. A method for producing a glass of claim 5 , comprising:
providing a composition of (V 2 O 5 ) z -(M u O v ) w —(LiBO 2 ) t by mixing and grinding of z wt-% of V 2 O 5 , w wt-% of M u O v , and t wt-% LiBO 2 ;
heating the mixture to a temperature and for a time to form a homogenous melt, but not over 900° C.; and
quenching the heated mixture.

21. A method for producing a glass of claim 8 , comprising:
providing a composition of (V 2 O 5 ) z -(M u O v ) w —(LiBO 2 ) t by mixing and grinding of z wt-% of V 2 O 5 , w wt-% M u O v , and t wt-% LiBO 2 ;
heating the mixture to a temperature and for a time to form a homogenous melt, but not over 900° C.; and
quenching the heated mixture.

Assignees

• Belenos Clean Power Holding Ag

Inventors

• Afyon Semih
• Nesper Reinhard

Classifications

• C03C3/145

  containing aluminium or beryllium · CPC title

• H01M4/625

  Carbon or graphite · CPC title

• H01M4/0483

  by methods including the handling of a melt (H01M4/0438, take precedence) · CPC title

• H01M10/052

  Li-accumulators · CPC title

• H01M4/5825

  Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines · CPC title