Electrode material and use thereof for production of electrochemical cells
AssigneeBASF SE
InventorsMartin Schulz-Dobrick, Hartmut Hibst, Jordan Keith Lampert, Robert Glaum, Helmut Ehrenberg, Katharina Gerber, Markus Herklotz, Frieder Scheiba
Life of this patent
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Abstract
A compound of the general formula (I) AaMbPcOd (I) in which the variables are each defined as follows: M is at least one transition metal selected from Co, Ni, Mn, Fe and Cr, A is Li or LixNa1-x where x is in the range from 0.2 to 1.0, a is in the range from 3.5 to 4.5, b is in the range from 0.8 to 1.2, c is in the range from 1.8 to 2.2 and d is in the range from 7.2 to 8.8.
Claims18
A compound of formula (I):
- AaMbPcOd (I)
- wherein M is at least one transition metal selected from the group consisting of Co, Ni, Mn, Fe, and Cr, optionally replaced by up to 20 mol % by Zn
- A is Li or LixNa1-x, optionally replaced by up to 10 mol % by K, Be, Mg, or Ca,
- P is optionally replaced by up to 10 mol % by B, Si, or As,
- x is from 0.2 to 1.0,
- a is from 3.5 to 4.5,
- b is from 0.8 to 1.2,
- c is from 1.8 to 2.2 and
- d is from 7.2 to 8.8
- wherein d is four times as large as c.
A process for producing an electrode, the process comprising:
- mixing an electrically conductive carbonaceous material, a binder, and a compound of formula (I):
- AaMbPcOd (I)
- wherein M is at least one transition metal selected from the group consisting of Co, Ni, Mn, Fe, and Cr,
- A is Li or LixNa1-x, x is from 0.2 to 1.0,
- a is from 3.5 to 4.5,
- b is from 0.8 to 1.2,
- c is from 1.8 to 2.2 and
- d is from 7.2 to 8.8 wherein d is four times as large as c.
A composite, comprising an electrically conductive carbonaceous material and a compound of formula (I):
- AaMbPcOd (I)
- wherein M is at least one transition metal selected from the group consisting of Co, Ni, Mn, F, and Cr,
- A is Li or LixNa1-x, x is from 0.2 to 1.0,
- a is from 3.5 to 4.5,
- b is from 0.8 to 1.2,
- c is from 1.8 to 2.2, and
- d is from 7.2 to 8.8 wherein d is four times as large as c.
Dependencies are inferred from the claim text.