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Efforts to enable fast charging and high energy density lithium‐ion batteries (LIBs) are hampered by the trade‐off nature of the traditional electrode design: increasing the areal capacity usually comes with sacrificing the fast charge transfer. Here a single‐layer chunky particle electrode design is reported, where red‐phosphorus active material is embedded in nanochannels of vertically aligned graphene (red‐P/VAG) assemblies. Such an electrode design addresses the sluggish charge transfer stemming from the high tortuosity and inner particle/electrode resistance of traditional electrode architectures consisting of randomly stacked active particles. The vertical ion‐transport nanochannels and electron‐transfer conductive nanowalls of graphene confine the direction of charge transfer to minimize the transfer distance, and the incomplete filling of nanochannels in the red‐P/VAG composite buffers volume change locally, thus avoiding the variation of electrodes thickness during cycling. The single‐layer chunky particle electrode displays a high areal capacity (5.6 mAh cm−2), which is the highest among the reported fast‐charging battery chemistries. Paired with a high‐loading LiNi0.6Co0.2Mn0.2O2 (NCM622) cathode, a pouch cell shows stable cycling with high energy and power densities. Such a single‐layer chunky particle electrode design can be extended to other advanced battery systems and boost the development of LIBs with fast‐charging capability and high energy density.

It is highly desired to develop new antibacterial agents with superior bactericidal efficiency for minimizing the damage to biological cells. We developed a combined antibacterial nanohybrid exhibiting a superb bactericidal effect and excellent biocompatibility by integrating upconversion nanoparticles (UCNPs) with silver nanoclusters (AgNCs). UCNPs and methylene blue (MB) molecules were encapsulated with silica microspheres via microemulsion, with MB as the photosensitizer. Silver ions (Ag + ) were reduced by amino groups on the surface of silica spheres, wherein silver nanoclusters (AgNCs) were formed in situ to produce the nanohybrid, UCNPs@SiO 2 (MB)@AgNCs. UCNPs emit visible light at 655 nm under excitation by near-infrared radiation (NIR, 980 nm). MB absorbs the emission from UCNPs to generate toxic singlet oxygen ( 1 O 2 ), which leads to the apoptosis of bacteria cells. Meanwhile, silver ions released from AgNCs destroy the bacteria membrane structure. Upon NIR irradiation at 980 nm for 10 min, 8.33 μg mL −1 nanohybrid results in a 100% killing rate for both Gram-positive S. aureus (+) and Gram-negative E. coli (−).

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