【央视新闻】首提稀土钡铜氧高温超导带材“十大关键科学技术问题” 中国科学院发布报告

Core Insights - The report released by the Institute of Physics, Chinese Academy of Sciences, is the first strategic research document focusing on the development of REBCO high-temperature superconducting tapes, outlining the current state of research, industrialization, and application globally, and identifying ten key scientific and technological issues in the field [2][4] Group 1: Superconducting Materials Overview - Superconducting materials are considered strategic materials with extraordinary properties such as zero electrical resistance and complete magnetic resistance, having broad application prospects in energy, transportation, medical, and scientific research fields [2] - 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 [2] Group 2: REBCO High-Temperature Superconductors - REBCO high-temperature superconductors have a critical temperature above liquid nitrogen temperature (-196°C), significantly reducing cooling costs and enhancing performance in carrying current and resisting magnetic fields, thus laying the foundation for larger-scale applications [3] - Since commercial production began in 2006, REBCO high-temperature superconducting tapes have shown significant application potential in fields such as magnetic confinement fusion, high-end medical devices, large scientific installations, and superconducting power equipment, primarily focusing on power systems and magnet systems [3] Group 3: Applications in Power and Magnet Systems - In power systems, REBCO tapes can be used to manufacture superconducting cables and fault current limiters, enabling high current, low-loss transmission suitable for urban grid upgrades [3] - In magnet systems, REBCO tapes are applied in critical devices like fusion reactors and high-field magnetic resonance imaging, where high mechanical strength and stability are required [3] Group 4: Future Development and Challenges - Despite entering the early commercialization phase, there is significant room for performance improvement in REBCO high-temperature superconducting tapes, which consist of a multi-layer composite structure [4] - Future development will focus on collaborative innovation across materials, processes, and applications, addressing issues such as enhancing current-carrying capacity, improving strength and toughness balance, and developing scalable, consistent manufacturing processes [4] - The report identifies ten key scientific and technological issues that hinder the large-scale application of REBCO tapes, which require deep collaboration across materials, physics, and engineering disciplines [4][5]