Nano Research Energy•2026•DOI: 10.26599/NRE.2025.9120181
Solid-state lithium metal batteries (SLMBs) demand quasi-solid polymer electrolytes (QSSPEs) that simultaneously deliver high ionic conductivity, interfacial stability, and oxidative resistance. This study reports a QSSPE membrane (MP46) formulated with MG30:LiTFSI:succinonitrile at a 10:4:6 weight ratio, exhibiting a wide electrochemical window of 5.1 V. Complementary infrared spectroscopy, small-angle X-ray scattering, and electron microscopy reveal a hierarchical ionic conductive network consisting of sphere-like nanostructures embedded within microphase-segregated architectures. This morphology enhances lithium-ion transport while preserving mechanical integrity. The strong interfacial adhesion between MP46 and lithium metal enables stable lithium plating and stripping for over 800 h at 0.2 mA·cm–2, effectively mitigating dendrite formation. When paired with LiFePO4 and LiCoO2 cathodes, MP46 sustains prolonged cycling, retaining 80.1% capacity after 1400 cycles at 2 C and 92.1% after 200 cycles at 4.5 V, respectively. Pouch-type cells further demonstrate mechanical flexibility and operational safety under deformation. These results establish MP46 as a viable candidate for stable high-energy-density SLMBs, offering fundamental insights into the design of next-generation polymer electrolytes.
Chinese Journal of Environmental Engineering•2026•DOI: 10.12030/j.cjee.202509067
Marine litter poses a significant threat to coastal ecosystems globally, necessitating a comprehensive understanding of its multi-compartment distribution and driving mechanisms for effective management. This study investigated the occurrence, composition, and sources of beach, sea surface, and seafloor litter in the northeastern Daya Bay, a semi-enclosed bay, during August–October 2024. Sampling included 11 beach transects, 6 surface transects, and 25 seafloor transects. Results showed that the mean density of large and very large beach litter was 4.41×10^5 items·km−2, while medium beach litter reached 5.39×10^6 items·km−2. Surface litter densities were 5.82×10^2 and 9.90×10^3 items·km−2 for large/very large and medium fractions, respectively. Seafloor litter averaged 5.20×10^3 items·km−2. Plastics dominated all compartments, accounting for 74.0% (beach), 96.0% (surface), and 78.8% (seafloor) of total litter. Source apportionment using NOWPAP methodology indicated that beach and surface litter primarily originated from coastal recreational activities, whereas seafloor litter was mainly derived from shipping and fishing. Beach quality assessment revealed that 63.6% of beaches were moderately clean or better (grade II–IV), and 90.9% were moderately safe or better (grade I–III). Hotspots included tourism beaches, tidal gyre areas, coral reef zones, and fishing grounds. The study underscores the need for targeted management, including improved waste collection on tourist beaches, dynamic cleaning protocols, and port reception facilities for fishing waste.
SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-025-3962-y
Photochromic Förster resonance energy transfer (pc-FRET)-based subnanometric polymersomes with accurate color control offer a transformative yet challenging tactic for advanced and custom-tailored information encryption. Herein, various amphiphilic alternating pyrene/azobenzene-containing copolymers were polymerized using one-pot Ugi four-component polycondensation. Subsequent self-assembly was performed to produce highly-integrated monolayer subnanometric polymersomes (MSNPSs) and their composites, with diameters of around ~250 nm and vesicular thicknesses of approximately ~12.0 Å. J-aggregated monolayer chain-folding mechanism was accountable for the donor-acceptor-donor stacking manner within the vesicular membrane, beneficial to achieve highly efficient energy transfer. The trans-to-cis photoisomerization of azobenzenes rendered MSNPSs and their composites with photo-triggered structural transitions in diameter and vesicular thickness. Benefitting from considerable spectral overlap between cis-azobenzene and pyrene, MSNPSs and their composites were capable of photo-controllable non-invasive pc-FRET performance with a wide Stokes shift (~320 nm). The accurate color variation from blue to red highly depended upon precise modulation of both irradiation duration and precursor-fixed donor/acceptor ratios. The proof-of-concept individually multichromatic 2D QR code was attained using photochromic MSNPSs and their composites in patterning lithography, displaying a multimodal decryption and favorable repeatability for high-level and personalized information protection. Our work paves a prospective avenue to meticulously craft stimuli-chromatic polymersomes for the potential of advanced information encryption.