Rapid ultrasound welding toward compact Na/Beta-Al2O3 interface realizing room-temperature solid-state sodium metal battery

Na metal anodes for liquid and solid-state Na batteries

“…349 Recently, Yu et al employed a room-temperature ultrasonic welding strategy to increase the contact area between Na and beta-Al 2 O 3 at the atom-level and reduce the interfacial impedance from 3500 to 50 Ω cm −2 . 350 Fig. 19b demonstrates a new solid electrolyte design, which helps to provide fast transportation pathways for the Na ions and electrons.…”

Recent progress and strategic perspectives of inorganic solid electrolytes: fundamentals, modifications, and applications in sodium metal batteries

“…423 Recently, the atomic-level ultrasound welding technique was applied to weld the rigid interfaces between BASE and the Na metal anode, ensuring a compact interface for lower interfacial impedance and suppressed dendrite growth. 424 The seminal development of b/b 00 -Al 2 O 3 , as one of the very earliest SEs, has unfolded the potential of SE systems and motivated the following research of room-temperature solid-state SMBs, which is continuously inspired by novel material fabrication and cell designs. 425…”

Anodic Electrolysis Strategy Enabled Fe/FeCl2 Electrode for Scalable Fe/FeCl2-Graphite Molten Salt Battery

“…Electrochemical energy storage devices, characterized by rapid response, high flexibility, and reliability, have emerged as the primary solution for small-scale, short-term energy storage. Recent rechargeable battery systems based on molten salt electrolytes exhibited excellent cyclic stability and reversible electrode reactions, such as liquid metal batteries, sodium–metal chloride batteries (ZEBRA), molten salt aluminum-based batteries, etc. The elevated ionic conductivity and noncombustible properties of molten salt electrolytes ensure robust diffusion kinetics and internal security in batteries, enhancing the overall adaptability and safety of electrochemical energy storage devices.…”