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ISSN: 2772-8307
Copyright © 2026 Shanghai Jiaotong University. Published by Elsevier B.V. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
cited:13
Superconducting fault current limiter for multi-terminal HVDC grid protection
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Article Number:Article 100195
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Abstract
Corresponding email:yingxin@tju.edu.cn
With the global energy transition, the proportion of renewable energy power generation in total electricity production has exceeded 30% and continues to rise, even the ratio is higher in China. Multi-terminal high-voltage direct-current (MT-HVDC) transmission systems have advantages of integration of distributed renewable energy sources, dynamic grid interconnections, and reliable islanding operation capabilities, being critical for next-generation power grid. Current limiting technologies are pivotal in maintaining grid safety and stability, especially for HVDC systems without natural zero-crossing point in fault currents. In this perspective, a superconducting fault current limiter (SFCL) with combination of resistance and inductance is necessary and more effective solution in protecting MT-HVDC transmission systems.
cited:2
Extended hydrogen frameworks in nonmetallic superhydrides enabling 190 K superconductivity
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Article Number:Article 100196
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Abstract
Corresponding email:zhangxh318@ysu.edu.cn；a.bergara@ehu.eus；yanggc468@nenu.edu.cn
Extended hydrogen-rich frameworks stabilized under high pressure are essential for achieving high-temperature superconductivity in metal hydrides, where metal atoms contribute both charge and intrinsic precompression. In contrast, p-block nonmetal hydrides lack such extended hydrogenic connectivity. Here, using first-principles crystal structure search calculations, we identify three nitrogen-based superhydrides—NH10, NH11, and NH12—each featuring a unique extended H sublattice: corrugated graphene-like hydrogen layers in NH10, planar H-ring sheets in NH11, and a fully three-dimensional, densely connected H framework in NH12. These structures are stabilized by units, which donate charge in a manner analogous to metal atoms in conventional metal superhydrides. Remarkably, NH10 exhibits a superconducting critical temperature () of 190 K at 200 GPa, driven by strong electron–phonon coupling between H-1s states and low-frequency hydrogen-derived phonon modes—a mechanism notably distinct from that of hydrogen cages in LaH10 and CaH6. The predicted values of NH11 and NH12 also exceeds 130 K. Our work introduces a new paradigm for designing nonmetal superhydrides with structurally engineered hydrogenic frameworks.
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