Electrochemically controlled superconductivity

Details Electrochemically controlled superconductivity Electrochemically controlled superconductivity

1988-04-08

1990-03-27

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

204 585, 324260, 350355, C25B 100, G01R 3300, G02F 101

Patent

active

049118005

ABSTRACT:
The superconducting properties of superconducting compounds are controlled or maintained by active external electrochemical intervention. The superconducting compound forms one electrode in an electrochemical cell. A counterelectrode and the superconducting compound electrode are in contact with an electrolyte and a potential is applied between the counterelectrode and the superconducting electrode. The cell is operated at a temperature near the expected transition temperature of the superconducting material. The potential applied between the electrodes is selected to control a property such as transition temperature. In a preferred embodiment, a superconducting material such as Ba.sub.2 YCu.sub.3 O.sub.7-x serves as an anode and a counterelectrode such as a mercury-mercuric oxide reference electrode serves as a cathode. Suitable oxygen-bearing electrolytes are ozone and trifluoronitrosomethane. In another embodiment, a superconducting cuprate material serves as a cathode and the electrolyte is copper-bearing.

REFERENCES:
patent: 4517253 (1985-05-01), Rose et al.
Rosamilia et al., J. Electrochem. Soc., Jul. 1987, pp. 1863-1864.
O'Sullivan et al., Materials Research Soc. Meeting, Nov. 30-Dec. 5, 1987, Boston, Mass., Pater AA 4.75.

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