Abstract
Nowadays, the expansion of existing electric cables has been a crucial limiting factor in the development of urban electricity power. Compared with traditional power cables, superconducting cables have advantages of large current carrying capacity, low energy consumption, and high current density. Superconducting wires and tapes, which are the main compositions of cable cores, are the basis of superconducting high-voltage applications. Among them, the 122-type iron-based superconducting wires and tapes show excellent comprehensive performance. In this paper, the development history of superconducting materials, wires and tapes and preparation method are briefly introduced, and influencing factors of critical current density of iron-based superconducting wires and tapes are summarized. Furthermore, future research direction for superconducting wires and tapes is prospected.
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