Enhanced Lithium-Ion Transport and Sulfur Conversion Kinetics in Li-S Batteries via High-Dielectric Composite Separators.

The development of lithium-sulfur (Li-S) batteries is hindered by lithium dendrite growth and slow sulfur redox kinetics. Here, we report a composite separator (CAFS) composed of nanocellulose fibers (NCF) and high-dielectric aluminum oxide (AlO) nanoparticles. The AlO component produces a directional electric field under external bias, anchoring bis(trifluoromethanesulfonyl)imide (TFSI) anions and promoting lithium salt dissociation, which enhances lithium-ion (Li) transport and stabilizes the anode.

Flexible Waterborne Polyurethane-Bacterial Cellulose Films for Real-Time Physiological Monitoring.

The incorporation of waterborne polyurethane (WPU) into bacterial cellulose (BC) fibers significantly improved the tensile strength of the resulting WPU/BC composite film, achieving an enhancement of 19.4 times. The formation of hydrogen bonds between WPU and BC effectively eliminates cavities within the BC matrix, achieving significant plasticization and toughening.

Adaptive Deployable Structure Enabled by Actively Controlled Tensegrity for Space Debris Removal.

The Earth's orbital environment is increasingly congested with space debris, posing a substantial risk to space operations and safety. Current mitigation strategies are primarily tailored to either small debris, through protective devices, or large debris, via spacecraft deorbiting methods, leaving medium-sized debris (0.4-10 cm) as a significant unaddressed threat.

Design strategies and performance enhancements of PVDF-based flexible electrolytes for high-performance all-solid-state lithium metal batteries.

Lithium metal is considered one of the most promising anode materials for lithium batteries due to its high theoretical specific capacity (3860 mA h g) and low redox potential (-3.04 V). However, uncontrolled lithium dendrite growth and severe interfacial side reactions during cycling result in poor performance and safety risks, significantly limiting its practical applications.