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Prototype superconducting current leads made of BSCCO 2212 have been fabricated using the sequential electrolytic deposition of precursors on a silver or a silver alloy tape and heat treatment. The leads have the potential of carrying 1,000 A at 4.2 K and 100 A at 77 K. The tapes were produced by the continuous industrial process resulting in greater flexibility, lower mechanical stress and thermal conductivity and better quench protection.

Bi 2212 tapes 2x3.5 micrometers thick were electrolytically deposited in a sequential manner on both sides of a 50 micrometer thick silver type by oxidation reaction of precursors. MgO doping was then conducted to increase the tapes' critical current density. Results show that the MgO-doped samples had 1.4 times greater critical current density at 4.2 K than Bi 2212 precursors prepared by electrodeposition.