Magnesium (Mg) and its alloys have recently gained increasing attention in the biomedical field as promising biodegradable materials with harmless degradation products. Magnesium-based alloys have a wide range of biomedical applications because of their outstanding biocompatibility and unique mechanical properties. Widespread use of Mg-based biomedical devices eliminates the need for post-healing biomaterial removal surgery and minimizes the negative consequences of the implantation of permanent biomaterials, including stress shielding and undesired metal ion release in the body. This paper provides a literature review on the properties and manufacturing methods of Mg-based alloys for biomedical applications, including orthopedic implants, cardiovascular applications, surgical wires and staplers, and antitumor activities. Each application of Mg-based biomaterials is investigated from a biological perspective, including matching functional properties, biocompatibility, host tissue responses, and anti-microbial strategies, along with potential additive manufacturing technologies for these applications. Finally, an outlook is presented to provide recommendations for Mg-based biomaterials in the future.

This review focuses on standard Li recycling approaches for LiFePO₄ (LFP) and nickel−cobalt−manganese (NCM) cathodes. The study discusses about advances in leaching agents, including organic acid, alkaline solutions, natural organic acid, and electrochemical treatments. Emphasis is placed on the significance of selective Li leaching strategies to optimize the recycling of waste batteries. The review also outlines potential future research directions for enhancing selective recycling, providing valuable insights into the recycling of LFP and NCM batteries. Simultaneously, the article addresses the challenges associated with the transition from conventional lithium-ion batteries to all-solid-state batteries (ASSBs) in the pursuit of sustainable energy storage technologies. It highlights key points, including the challenges in developing ASSBs, the role of employing various material combinations and its preparation techniques, adopting scalable solution-based processes for commercialization, and strategies for sustainable ASSB recycling. The proposition of a fully recyclable ASSB model underscores the commitment to lower recycling costs using safer and simpler methods, positioning nanotechnology as an enabling tool for achieving advancements in materials and cell-level performance.