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Protonation has been considered essential for the pseudocapacitive energy storage of polyaniline (PANI) for years, as proton doping in PANI chains not only activates electron transport pathways, but also promotes the proceeding of redox reactions. Rarely has the ability for PANI of storing energy without protonation been investigated, and it remains uncertain whether PANI has pseudocapacitive charge...
Reprogramming the immunologically “cold” environment of solid tumors is currently becoming the mainstream strategy to elicit powerful and systemic anticancer immunity. Here, a facile and biomimetic nano‐immunnoactivator (CuS/Z@M4T1) is detailed by engineering a Zn2+‐bonded zeolitic imidazolate framework‐8 (ZIF‐8) with CuS nanodots (NDs) and cancer cell membrane for amplified near‐infrared‐II (NIR‐II)...
Fabrication of transition‐metal catalytic materials is regarded as a promising strategy for developing high‐performance sodium–selenium (Na–Se) batteries. However, more systematic explorations are further demanded to find out how their bonding interactions and electronic structures can affect the Na storage process. This study finds that lattice‐distorted nickel (Ni) structure can form different bonding...
Rheological Tunable Magnetic Fluids
In article number 2204609, Hong Yang, Quan Li, and co‐workers design a magnetic fluid by using oleic acid coated Fe3O4 nanoparticles as the magnetic particles, and the amphiphilic penta block copolymer‐based aqueous solution as the carrier fluid. This magnetic fluid possesses outstanding long‐term stability and reversible rheological changes between the low‐viscosity...
Magnetic fluids have advantages such as flow ability and solid‐like property in strong magnetic fields, but have to suffer from the tradeoff between suspension stability and flow resistance. In this work, a thermal/photo/magnetorheological water‐based magnetic fluid is fabricated by using oleic acid‐coated Fe3O4 (Fe3O4@OA) nanoparticles as the magnetic particles and the amphiphilic penta block copolymer...
Dynamic sequential control of photoluminescence by supramolecular approaches has become a great issue in supramolecular chemistry. However, developing a systematic strategy to construct polychromatic photoluminescent supramolecular self‐assemblies for improving the efficiency and sensitivity of artificial light‐harvesting systems still remains a challenge. Here, a series of amphiphilicity‐controlled...
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...
Volumetric performance is of great importance in today's energy storage devices, and is used to evaluate their competitiveness in the markets of miniaturized electronic devices and space‐constrained electric vehicles. Supercapacitors suffer from a low volumetric energy density in spite of their high power and long cycle life because of their use of porous but low‐density carbons. This review considers...
Catalysis is an effective remedy for the fast capacity decay of lithium‐sulfur batteries induced by the shuttling of lithium polysulfides (LiPSs), but too strong adsorption ability of many catalysts toward LiPSs increases the risk of catalyst passivation and restricts the diffusion of LiPSs for conversion. Herein, perovskite bimetallic hydroxide (CoSn(OH)6) nanocages are prepared, which are further...
The precise control of the ice crystal growth during a freezing process is of essential importance for achieving porous cryogels with desired architectures. The present work reports a systematic study on the achievement of multi‐structural cryogels from a binary dispersion containing 50 wt% 2,2,6,6‐tetramethylpiperidin‐1‐oxyl, radical‐mediated oxidized cellulose nanofibers (TOCNs), and 50 wt% graphene...
Rechargeable aqueous zinc (Zn) ion‐based energy storage systems have been reviving recently because of their low cost and high safety merits; however, they still suffer from the problems of corrosion and dendrite growth on Zn metal anodes that cause gas generation and early battery failure. Unfortunately, the corrosion problem has not received sufficient attention until now. Here, it is pioneeringly...
Sodium‐ion batteries (SIBs) are promising for large‐scale energy storage systems and carbon materials are the most likely candidates for their electrodes. The existence of defects in carbon materials is crucial for increasing the sodium storage ability. However, both the reversible capacity and efficiency need to be further improved. Functionalization is a direct and feasible approach to address this...
In order to fabricate high performance fiber pseudocapacitors, the trade‐off between high mass loading and high utilization efficiency of pseudocapacitive materials should be carefully addressed. Here, a solution that is to construct a carbon‐based versatile scaffold is reported for loading pseudocapacitive materials on carbonaceous fibers. The scaffold can be easily built by conformally coating commercial...
Aerogels are one of the most popular composite reinforcement materials because of their high porosity and their continuous and homogeneous network. Most aerogels are isotropic, thus leading to isotropic composites when they are used as fillers. This fundamentally limits their applications in areas where anisotropy is needed. Here, an anisotropic microhoneycomb cellulose nanofiber‐ (CellF)‐carbon nanotube...
Multifunctional nanotheranostic agents are of particular importance in the field of precise nanomedicine. However, a critical challenge remains in the rational fabrication of monodisperse multicomponent nanoparticles with enhanced multifunctional characteristics for efficient cancer theranostics. Here, a rational and facile synthesis of monodisperse Gd2O3/Bi2S3 hybrid nanodots (Gd/Bi‐NDs) is demonstrated...
A porous, yet compact, RuO2/graphene hybrid is successfully prepared by using a disassembly–reassembly strategy, achieving effective and uniform loading of RuO2 nanoparticles inside compact graphene monolith. The disassembly process ensures the uniform loading of RuO2 nanoparticles into graphene monolith, while the reassembly process guarantees a high density yet simultaneously unimpeded ion transport...
In article number 1701026, Jiaxing Huang, Quan‐Hong Yang, and co‐workers, prepare a porous, yet compact, RuO2/graphene composite via a disassembly–reassembly strategy, achieving effective and uniform loading of RuO2 nanoparticles inside the graphene monolith. The disassembly ensures nanoparticle loading into the solid graphene monolith, while the reassembly guarantees a high density, while simultaneously...
In article 1700358, Wei Lv, Quan‐Hong Yang, and co‐workers, develop a dual‐function sulfate templating method to produce a sulfur nanodot cathode with high sulfur loading for lithium‐sulfur batteries towards excellent rate and cycling performance, where sulfate serves as both the sulfur precursor and a template for carbon‐based conducting network formation.
The sulfur content in carbon–sulfur hybrid using the melt‐diffusion method is normally lower than 70 wt%, which greatly decreases the energy density of the cathode in lithium–sulfur (Li‐S) batteries. Here, a scalable method inspired by the commercialized production of Na2S is used to prepare a hierarchical porous carbon–sulfur hybrid (denoted HPC‐S) with high sulfur content (≈85 wt%). The HPC‐S is...
Introducing heterojunction is an effective way for improving the intrinsic photocatalytic activity of a graphitic carbon nitride (GCN) semiconductor. These heterostructures are mostly introduced by interfacing GCN with foreign materials that normally have entirely different physicochemical properties and show unfavorable compatibility, thus resulting in a limited improvement of the photocatalytic...
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