Strategic research on REBCO high-temperature superconducting tapes

High-temperature superconducting materials, represented by REBCO (REBa₂<bold>Cu</bold>₃O_7-δ, where RE denotes rare-earth elements), are of significant strategic importance in fields such as energy, healthcare, and large-scale scientific facilities due to their excellent performance in the liquid nitrogen temperature range. However, they still face severe challenges in long-tape uniformity, production cost, and engineering reliability. Future development must shift toward a “material-processing-application” collaborative innovation model, aiming at enhancing flux pinning, optimizing the interfaces and mechanical properties of the multilayer structure, and integrating scalable and intelligent fabrication technologies to promote the low-cost and stable production of high-performance tapes. This study analyzes the core application requirements, research and development status, trends, key scientific and technological bottlenecks, and domestic development pathways for REBCO tapes, providing insights to support independent innovation and industrial leadership in China’s High-temperature superconducting field.