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 Chinese Academy of Sciences has released the first strategic research report on 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 [1][3] Group 1: Superconducting Materials Overview - Superconducting materials exhibit extraordinary properties such as zero resistance and complete diamagnetism, making them strategically valuable in various fields including energy, transportation, medical, and scientific research [1] - Traditional superconductors require 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 [1] Group 2: REBCO High-Temperature Superconductors - REBCO superconductors operate at temperatures above liquid nitrogen (−196°C), significantly reducing cooling costs and enhancing performance in current-carrying capacity and magnetic field resistance, thus laying the foundation for broader applications [2] - Since commercial production began in 2006, REBCO high-temperature superconducting tapes have shown significant potential in fields such as magnetic confinement fusion, high-end medical devices, large scientific installations, and superconducting power equipment [2] Group 3: Applications and Technical Focus - The applications of REBCO tapes are primarily concentrated in two areas: power systems and magnet systems [2] - 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 [2] - In magnet systems, REBCO tapes are essential for devices like fusion reactors and high-field magnetic resonance imaging, where mechanical strength and stability are critical [2] Group 4: Future Development and Challenges - Despite entering the commercialization phase, there is significant room for performance improvement in REBCO tapes, which consist of a multi-layer composite structure [3] - 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 achieving scalable, consistent production processes [3] - The report identifies ten key scientific and technological issues that hinder the large-scale application of REBCO tapes, emphasizing the need for interdisciplinary collaboration to overcome these challenges [3]