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Full text of "USPTO Patents Application 09868995"

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IN THE CLAIMS 

Please cancel Claim 16. 

Please amend Claims 12, 18 and 21. 

1-11 (Cancelled) 

12. (Currently Amended) Nickel mixed hydroxide with Ni as the main 
element and with a layer structure, comprising 

a) at least one element M a from the group comprising Fe, Cr, Co, Ti, Zr 
and Cu which is present in two different oxidation states which differ by one electron 
in terms of the number of outer electrons , wherein the degree of oxidation a of the 
element M & , defined according to the following formula (I), is from 0.25 to 0.75 



wherein M £ +(x+1) means the molar Quantity of the element Ma in the higher 

oxidation state, and M g +<x) the molar Quantity of the element M g in the 
lower oxidation state, and x is a number between 1 and 3 : 

b) at least one element M b from the group comprising B, Al, Ga, In and 
rare earth metals present in the trivalent oxidation state; 

c) optionally at least one element M c from the group comprising Mg, Ca, 
Sr, Ba and Zn present in the divalent oxidation state; 

d) apart from the hydroxide, at least one additional anion selected from 
the group consisting of halides, carbonate, sulfate, acetate, oxalate, 
borate and phosphate in a quantity sufficient to preserve the 
electroneutrality of the mixed hydroxide; and 

e) water of hydration in a quantity which stabilizes the relevant structure 
of the mixed hydroxide. 

13. (Previously Presented) The nickel mixed hydroxide according to Claim 
12, wherein the proportion of Ni is from 60 to 92 mol % and the total proportion of 
the elements M a , M b and M c is from 40 to 8 mol %, in each case based on the total 
amount of Ni, M a , Mb and M c . 



14. (Previously Presented) The nickel mixed hydroxide according to Claim 
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12, wherein the proportion of the element M a is from 10 to 40 mol %, based on the 
total amount of the elements M a , M b and M c . 



15. (Previously Presented) The nickel mixed hydroxide according to Claim 
12, wherein the proportion of the element M c is from 1 to 30 mol %, based on the 
total amount of elements M a , M b and M c . 

16. (Cancelled) 

1 7. (Previously Presented) The nickel mixed hydroxide according to Claim 
12, wherein the nickel mixed hydroxide is in the form of a powder with an average 
particle size from 1 to 100 jam. 

18. (Currently Amended) The nickel mixed hydroxide according to Claim 
12, wherein the rare earth metals of the element M b are selected from the group 
consisting of Sc SQ, Y and La. 

19. (Previously Presented) The nickel mixed hydroxide according to Claim 
12, wherein the halides are selected from the group consisting of fluoride and 
chloride. 

20. (Previously Presented) The nickel mixed hydroxide according to Claim 
12, wherein the nickel mixed hydroxide is a cathode material in an alkaline battery. 

21 . (Currently Amended) A process for preparing a nickel mixed hydroxide 
with Ni as the main element and with a layer structure, comprising: 

a) at least one element M a selected from the group consisting of Fe, Cr, 
Co, Ti, Zr and Cu which is present in two different oxidation states which differ by 
one electron in terms of the number of outer electrons , wherein the degree of 
oxidation a of the element IVU. defined according to the following formula (0, is from 
0.25 to 0.75 



wherein M g +(x4 " 1) means the molar guantitv of the element M a in the higher 

oxidation state, and Ma +(x) the molar guantitv of the element M a in the 




a = 




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lower oxidation state, and x is a number between 1 and 3 : 

b) at least one element M b from selected from the group consisting of B, 
Al, Ga, In and rare earth metals present in the trivalent oxidation state; 

c) optionally at least one element M c selected from the group consisting 
of Mg, Ca, Sr, Ba and Zn present in the divalent oxidation state; 

d) apart from the hydroxide, at least one additional anion selected from 
the group consisting of halides, carbonate, sulfate, acetate, oxalate, 
borate and phosphate in a quantity sufficient to preserve the 
electroneutrality of the mixed hydroxide; and 

e) water of hydration in a quantity which stabilizes the relevant structure 
of the mixed hydroxide, 

the process comprising reacting components required to obtain the 
relevant mixed hydroxides in the form of water-soluble salts of Ni and of the 
elements M a , M b and optionally M c in a basic, aqueous medium for the co- 
precipitation of hydroxide reaction products with the formation of a homogeneous 
suspension of said reaction products, 

wherein either water-soluble salts of the element M a are used in different 
oxidation states or a water-soluble salt of the element M a is used in the lower 
oxidation state and a partial oxidation is carried out until the desired ratio is obtained 
between the different oxidation states of the element M a , or a water-soluble salt of 
the element M a is used in the higher oxidation state and a partial reduction is carried 
out until the desired ratio is obtained between the different oxidation states of the 
element M a , separation of the water from the suspension, and drying of the reaction 
products. 

22. (Previously Presented) The process according to Claim 21 , wherein at 
least one of the reaction components is introduced into the aqueous medium by 
anodic oxidation of the corresponding metal. 

23. (Previously Presented) The process according to Claim 21 , wherein 
the reaction is carried out at a pH from 8 to 13. 



24. (Previously Presented) The process according to Claim 21, wherein 
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partial oxidation is carried out by using oxygen, H 2 0 2 , hypochlorite, peroxodisulfates 
or percarbonates as oxidizing agent. 



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