中国发布国际首个聚焦高温超导带材发展战略研究报告

Core Insights - The report titled "2025 REBCO High-Temperature Superconducting Tape Strategic Research Report" is the first strategic research report focusing on the development of high-temperature superconducting tapes, released by the Chinese Academy of Sciences [1][4]. Group 1: Current Status and Applications - The report systematically reviews the global research, industrialization, and application status of REBCO high-temperature superconducting tapes, identifying ten key scientific and technological issues that need to be addressed for large-scale application [2]. - Superconducting materials, known for their zero resistance and complete diamagnetism, are considered highly strategic materials with broad application prospects in energy, transportation, medical, and scientific research fields [3]. - Traditional superconductors operate at extremely low temperatures (-269°C), leading to high cooling costs and reliance on scarce helium resources, which has limited their application to large scientific devices and high-end medical equipment [3]. Group 2: Advantages of REBCO - REBCO high-temperature superconducting materials have a critical temperature above liquid nitrogen temperature (-196°C), significantly reducing cooling costs and enhancing performance in current carrying and magnetic field resistance, thus laying the foundation for broader applications [5]. - Applications of REBCO are primarily concentrated in two areas: power systems and magnet systems. In power systems, REBCO tapes can be used to manufacture superconducting cables and fault current limiters, which are crucial for urban grid upgrades and ensuring grid safety [5]. - In magnet systems, REBCO tapes are applied in nuclear fusion devices, high-field magnetic resonance imaging, and superconducting motors, which require high mechanical strength and stability [5]. Group 3: Key Scientific and Technological Issues - The report identifies ten critical scientific and technological issues hindering the large-scale application of REBCO tapes, spanning the entire material system from the base layer to the superconducting functional layer [6][7]. - These issues include enhancing the yield strength and fatigue resistance of alloy substrates, overcoming inherent limitations of buffer layer materials, and achieving stability and uniformity in thin-film deposition processes [6][7]. Group 4: Future Directions - The report emphasizes the need for collaborative innovation in materials, processes, and applications to enhance the performance of REBCO tapes, focusing on optimizing internal structures, improving strength and toughness balance, and developing scalable and consistent manufacturing processes [9]. - The release of this report clarifies key directions and implementation paths for China's high-temperature superconducting field, aiming to transition from following to leading in this technology [11].