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Electrical bioadhesive interface (EBI), especially conducting polymer hydrogel (CPH)‐based EBI, exhibits promising potential applications in various fields, including biomedical devices, neural interfaces, and wearable devices. However, current fabrication techniques of CPH‐based EBI mostly focus on conventional methods such as direct casting, injection, and molding, which remains a lingering challenge...
It is challenging yet promising to design highly accessible N‐doped carbon skeletons to fully expose the active sites inside single‐atom catalysts. Herein, mesoporous N‐doped carbon hollow spheres with regulatable through‐pore size can be formulated by a simple sequential synthesis procedure, in which the condensed SiO2 is acted as removable dual‐templates to produce both hollow interiors and through‐pores,...
Iron‐based sulfate cathodes of alluaudite Na2+2δFe2−δ(SO4)3 (NFS) in sodium‐ion batteries with low cost, steady cycling performance, and high voltage are promising for grid‐scale energy storage systems. However, the poor electronic conductivity and the limited understanding of the phase‐evolution of precursors hinder obtaining high‐rate capacity and the pure phase. Distinctive NFS@C@n%CNTs (n = 1,...
Robust, ultrathin, and environmental‐friendliness papers that synergize high‐efficiency electromagnetic interference (EMI) shielding, personal thermal management, and wearable heaters are essential for next‐generation smart wearable devices. Herein, MXene nanocomposite paper with a nacre‐like structure for EMI shielding and electrothermal/photothermal conversion is fabricated by vacuum filtration...
Flexible electronic sensors show great potential for health monitoring but are usually limited to single sensing functionality. To enrich their functions, complicated device configurations, sophisticated material systems, and preparation processes are typically involved, obstructing their large‐scale deployment and widespread application. Herein, to achieve a good balance between simplicity and multifunctionality,...
The insufficient ionic conductivity, limited lithium‐ion transference number (tLi+), and high interfacial impedance severely hinder the practical application of quasi‐solid polymer electrolytes (QSPEs). Here, a sandwich‐structured polyacrylonitrile (PAN) based QSPE is constructedin which MXene‐SiO2 nanosheets act as a functional filler to facilitate the rapid transfer of lithium‐ion in the QSPE, and...
Electrocatalytic Oxygen Reduction
In article number 2207991, Cheng‐Yan Xu and co‐workers develop a self‐sacrificing strategy to encapsulate single‐atom Fe‐N4O1 species into carbon hollow spheres assembled by ultrathin nanosheets Fe1–N–C hollow microspheres (Fe1/N‐HCMs). Such highly open architecture is supposed to be an ideal platform to isolate and fully expose single metal atoms. Benifiting from...
Single‐atom Fe–N–C (Fe1–N–C) materials represent the benchmarked electrocatalysts for oxygen reduction reaction (ORR). However, single Fe atoms in the carbon skeletons cannot be fully utilized due to the mass transfer limitation, severely restricting their intrinsic ORR properties. Herein, a self‐sacrificing template strategy is developed to fabricate ultrathin nanosheets assembled Fe1–N–C hollow...
Bi Doped Graphene
In article number 2206218, Xianyang Lu, Thomas Frauenheim, Yongbing Xu, and co‐workers investigate femtosecond laser excitation induced electronic dynamic in Bi doped graphene, using time resolved and angular resolved photoemission spectrum. The Fermi surface in Dirac cone and carrier concentration is modulated by adatoms' content. This effectively tailors the competition between...
By introducing different contents of Bi adatoms to the surface of monolayer graphene, the carrier concentration and their dynamics have been effectively modulated as probed directly by the time‐ and angle‐resolved photoemission spectroscopy technique. The Bi adatoms are found to assist acoustic phonon scattering events mediated by supercollisions as the disorder effectively relaxes the momentum conservation...
Pore‐structure design with the sophisticated and pragmatic nanostructures still remains a great challenge. In this work, porous carbon with Russian‐doll‐like pores rather than traditional single modal is fabricated via a boiling carbonization approach, accompanied by K+‐pre‐intercalation. The most important internal factor is that alkali can penetrate into the stereoscopic space of layered Malonic...
Diabetic Wound Healing
In article number 2205489, Jinshan Guo, Keke Wu, and co‐workers develop an on‐demand removable, pH‐responsive europium‐releasable and photothermal antimicribal adhesive dressing for diabetic wound healing. The adhesive provides convenient non‐invasive wound closure, enables in‐time painless dressing change upon mixing with borax solution, and smoothly connects inflammatory microenvironment...
Current diabetic wound treatments remain unsatisfactory due to the lack of a comprehensive strategy that can integrate strong applicability (tissue adhesiveness, shape adaptability, fast self‐healability, and facile dressing change) with the initiation and smooth connection of the cascade wound healing processes. Herein, benefiting from the multifaceted bonding ability of tannic acid to metal ions...
Transition metal–nitrogen–carbon (TM–N–C) catalysts have been intensely investigated to tackle the sluggish oxygen reduction reactions (ORRs), but insufficient accessibility of the active sites limits their performance. Here, by using solid ZIF‐L nanorods as self‐sacrifice templates, a ZIF‐phase‐transition strategy is developed to fabricate ZIF‐8 hollow nanorods with open cavities, which can be subsequently...
Deficiencies in understanding the local environment of active sites and limited synthetic skills challenge the delivery of industrially‐relevant current densities with low overpotentials and high selectivity for CO2 reduction. Here, a transient laser induction of metal salts can stimulate extreme conditions and rapid kinetics to produce defect‐rich indium nanoparticles (L‐In) is reported. Atomic‐resolution...
Lithium (Li) metal batteries (LMBs) face huge challenges to achieve long cycling life at wide temperature range owing to the severe dendrite growth at subambient temperature and the intense side reactions with electrolyte at high temperature. Herein, an ultrathin LiBO2 layer with an extremely high Young's modulus of 8.0 GPa is constructed on Li anode via an in situ reaction between Li metal and 4,4,5,5‐tetramethyl‐1,3,2‐dioxa‐borolane...
The formation of severe dendritic sodium (Na) microstructure reduces the reversibility of anode and further hinders its practical implementation. In this work, an ionic‐electronic dual‐conducting (IEDC) scaffold composed of Na3P and carbon nanotubes is in situ developed by a scalable strategy with subsequent alloying reaction, for realizing dendrite‐free Na deposition under high current density and...
Nanocellulose including cellulose nanocrystal (CNC) and cellulose nanofiber (CNF) has attracted much attention due to its exceptional mechanical, chemical, and rheological properties. Although considered biocompatible, recent reports have demonstrated nanocellulose can be hazardous, including serving as drug carriers that accumulate in the liver. However, the nanocellulose effects on liver cells,...
Drug delivery systems (DDS) are extensively studied to improve the solubility, stability, pharmacokinetic, and biodistribution of chemotherapeutics. However, the drug delivery efficiency of traditional DDS is often limited by the complicated biological barriers in vivo. Herein, a multistage adaptive nanoparticle (MAN) that simultaneously overcomes multiple biological barriers to achieve tumor‐targeted...
2D boron nitride (BN) and molybdenum disulfide (MoS2) materials are increasingly being used for applications due to novel chemical, electronic, and optical properties. Although generally considered biocompatible, recent data have shown that BN and MoS2 could potentially be hazardous under some biological conditions, for example, during, biodistribution of drug carriers or imaging agents to the liver...
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