Lithium-air batteries (LABs) have attracted extensive attentions due to their high theoretical energy density based on the “Holy Grail” lithium metal anode and the inexhaustible air as the cathode. However,...

To meet the demand for high‐energy‐density batteries, alloy‐type and conversion‐type anode materials have attracted growing attention due to their high specific capacity. However, the huge irreversible lithium loss during initial cycling significantly reduces the energy density of the full cell, which limits their practical applications. Fortunately, various anode prelithiation techniques have been developed to compensate for the initial lithium loss. At the same time, the cathode prelithiation has been proposed and demonstrated remarkable enhancement in the electrochemical performance, along with excellent scalability and compatibility with the existing battery production processes. Here, recent advances are reviewed in the prelithiation of both anodes and cathodes, and the key challenges are discussed in front of their practical applications. It is aimed to provide better recommendations and assistance for its large‐scale practical applications.

In this study, the low-temperature ultrasound-activated joining of ZrO 2 ceramics using Sn-4Al-0.7Cu solder was achieved at 350°C. It was found that a nanoscale amorphous Al 2 O 3 layer formed at the solder-ceramic interface during the ultrasonic soldering process. The occurrence of the interfacial oxidation of aluminum could be attributed to the sonochemical effects of acoustic cavitation and turbulent streaming induced by the propagation of ultrasonic waves in the liquid solder.The formed butt joints exhibited an average tensile strength of 47.3 MPa. K E Y W O R D Samorphous Al 2 O 3 , low-temperature soldering, nanoscale interphase layer, ultrasound, ZrO 2 ceramic

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