Fluorosurfactant as a zinc corrosion inhibitor

1. An alkaline electrochemical cell, comprising:

a container, a negative electrode, a positive electrode, wherein said negative electrode and said positive electrode are disposed within the container, a separator located between the negative electrode and the positive electrode, and an alkaline electrolyte, wherein the negative electrode comprises zinc and a sulfotricarballylate surfactant;

wherein the sulfotricarballylate is present in an amount from 100 to 1,000 ppm based on the total weight of the zinc.

2. The cell according to claim 1 , wherein the sulfotricarballylate is characterized by the formula

and where Z 1 =Z 2 =Z 3 =F 3 C(CF 2 ) ai (CH 2 ) bi (O(CH 2 ) ci ) di —, where ai =1-2, bi =1-2, ci =2, and di =1-3.

3. The cell according to claim 1 , wherein the sulfotricarballylate is characterized by the formula

and where Z i =Z 2 =Z 3 =F 3 C(CF 2 )(CH 2 )(O(CH 2 CHCH 2 CH 3 )).

4. The cell according to claim 1 , wherein the sulfotricarballylate contains three fluorinated end groups.

5. The cell according to claim 1 , wherein the sulfotricarballylate 0 is in the form of a mixture.

6. The cell according to claim 1 , wherein the positive electrode comprises manganese dioxide.

7. The cell according to claim 1 , wherein the positive electrode is an air electrode.

8. The cell according to claim 4 , wherein each of said fluorinated end groups comprises F 3 C(CF 2 ) 2 .

9. The cell according to claim 4 , wherein each of said fluorinated end groups comprises F 3 C(CF 2 ).

10. An alkaline electrochemical cell, comprising:

a container; an electrode assembly disposed within the container and comprising a negative electrode, a positive electrode, a separator located between the negative electrode and the positive electrode, and an alkaline electrolyte, wherein the negative electrode comprises zinc and a fluorosurfactant, wherein said fluorosurfactant has more than one fluorinated end group;

wherein the sulfotricarballylate is present in an amount from 100 to 1,000 ppm based on the total weight of the zinc.

11. The cell according to claim 10 , wherein said fluorosurfactant has three fluorinated end groups.

12. The cell according to claim 10 , wherein said fluorosurfactant further has an anionic polar group.

13. The cell according to claim 10 , wherein said fluorinated end groups are identical.

14. The cell according to claim 10 , wherein said fluorosurfactant is of the formula

where the groups Z 1 , Z 2 , and Z 3 are, independently of one another, branched or unbranched alkyl groups or groups of the structure R i (A 9 CR 1 R 2 ) ci —(CR 3 R 4 ) c′i ) di —, where the respective indices ci and c′i are, independently of one another, 0-10, and di =0-5, where R i is a branched or unbranched, fluorine-containing alkyl radical, R 1 to R 4 are, independently of one another, hydrogen or a branched or unbranched alkyl group, ci and c′i are not simultaneously 0 , and A=O, S and/or N, Y 1 is an anionic polar group and Y 2 is a hydrogen atom, or vice versa,

X is a cation, and at least one of the groups Z 1 , Z 2 , and Z 3 is a group of the structure R i (A(CR 1 R 2 ) ci —(CR 3 R 4 ) c′i ) di —.

15. The cell according to claim 12 , wherein said anionic polar group is a sulfonate group.

16. The cell according to claim 7 , wherein the surfactant forms at least one monolayer on the surface of said zinc.

17. The cell according to claim 10 , wherein said fluorosurfactant has a molecular weight of between 800 and 1320.

18. The cell according to claim 1 , wherein the sulfotricarballylate is characterized by the formula

and where Z i =Z 2 =Z 3 =F 3 C(CF 2 )(CH 2 )(O(CH 2 CH 2 CH 2 CH 2 )).