Yu Ji,Junpeng Xie,Zhaoxi Shen,Yu Liu,Zhaorui Wen,Lei Luo,Guo Hong
Aqueous rechargeable zinc–iodine batteries have received increasing attention in the field of portable electronics due to their high safety, low-cost, and great electrochemical performance. However, the insulated nature of iodine and the unrestricted shuttle effect of soluble triiodide seriously limit the lifespan and Coulombic efficiency (CE) of the batteries. Herein, a high-performance zinc–iodine energy storage system based on the hydrothermal reduced graphene oxide (rGO) and a high concentration zinc chloride water-in-salt electrolyte are promoted. The 3D microporous structures and outstanding electrical conductivity of rGO make it an excellent host for iodine, while the water-in-salt electrolyte effectively suppresses the shuttle effect of triiodide and improves the CE of the system. As a result, an ultra-high I 2 mass loading of 25.33 mg cm −2 (loading ratio of 71.69 wt.%) is realized during the continuous charging/discharging process. The batteries deliver a high capacity of 6.5 mAh cm −2 at 2 mA cm −2 with a much-improved CE of 95% and a prominent rate performance with capacity of 1 mAh cm −2 at 80 mA cm −2 . A stable long-term cycling performance is also achieved with capacity retention of 2 mAh cm −2 after 2000 cycles at 50 mA cm −2 .
Sepsis is responsible for approximately 5.3 million deaths globally each year. Here, we constructed hierarchical chitin microspheres loaded with MOF-919 (Ch/metal–organic frameworks [MOFs]) for the rapid and efficient removal of lipopolysaccharide (LPS) in complex blood environments. Furthermore, abundant active sites on MOF-919(Sc) also enable a record-high adsorption capacity of 9.56 mg/g in biomass-based adsorbents due to the coordination interactions between endotoxin and MOF-919(Sc). The LPS level of sepsis rabbits was less than 2 EU/mL (clearance rate >95%) after 90-min hemoperfusion, showing no adverse effect on the rabbit organs. Additionally, compared to the commonly used LPS scrubber Toraymyxin (polymethyl methacrylate), the chitin adsorbent is significantly more cost-effective and environmentally friendly. The preparation strategy for hierarchical porous microspheres offers notable advantages in designability, recyclability, and renewability, providing a new approach to sepsis treatment and promising prospects for the biomedical application of sustainable biomass materials.
危险品化学品经营许可证（带存储）