Ordered mesoporous carbon (OMC) is considered one of the most promising materials for electric double layer capacitors (EDLC) given its low‐cost, high specific surface area, and easily accessed ordered pore channels. However, pristine OMC electrode suffers from poor electrical conductivity mechanical flexibility, whose capacitance cycling stability unsatisfactory in flexible devices. In this work, coated on highly conductive three‐dimensional graphene foam, serving as both charge collector...

Collagen hydrolysate can stabilize Zn and Li electrodeposition in metal ion batteries.

Although zinc-based batteries are promising candidates for eco-friendly and cost-effective energy storage devices, their performance is severely retarded by dendrite formation. As the simplest zinc compounds, chalcogenides, halides individually applied as a Zn protection layer due to high ion conductivity. However, mixed-anion compounds not studied, which constrains Zn2+ diffusion in single-anion lattices own limits. A heteroanionic conductor (Zny O1-x Fx ) coating designed situ growth...

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Embedding Pd nanoparticles in carbon thin film-lined SBA-15 nanoreactors provides highly efficient catalysts for heterogeneous cross coupling reactions aqueous media. No leaching or aggregation of was found these after reusing them several times. The film lining further confirmed with small molecular arene probing experiments.

Rechargeable aqueous Zn-MnO2 batteries are a promising candidate for large-scale energy storage systems due to their outstanding advantages, such as high density, safety, low cost, and environmental friendliness. Considering the controversies surrounding mechanism of this battery containing mildly acidic electrolyte, electrochemical behavior type using β-MnO2 cathode is systematically investigated. The results indicate that reversible intercalation Zn2+ ions into MnO2 not likely take place...

An ultrathin graphene artificial interphase stabilizes active material and conductive carbon in aqueous energy storage systems.

Abstract Realizing transparent and energy-dense supercapacitor is highly challenging, as there a trade-off between energy storing capability transparency in the active material film. We report here that interstitial boron-doped mesoporous semiconductor oxide shows exceptional electrochemical capacitance which rivals other pseudocapacitive materials, while maintaining its characteristic. This improvement credited to robust redox reactions at boron-associated defects transform inert oxides...

A solid-state zinc-ion battery can fundamentally eliminate dendrite formation and hydrogen evolution on the zinc anode from aqueous systems. However, enabling fast ion + conduction in solid crystals is thought to be impossible. Here, we demonstrated a fluorine-doping approach achieving Zn2+ transport mesoporous ZnyS1-xFx. The substitutional doping of fluoride with sulfide substantially reduces migration barrier crystalline phase, while mesopore channels bounded dimethylformamide enable...

MnO2 is a promising electrode material for supercapacitors, because it exhibits high theoretical specific capacitance (1380 F g−1) electrical charge while also being inexpensive and environmentally benign. However, owing to its low conductivity, the intrinsic pseudocapacity of not fully utilized. In this work, hierarchically structured spheres composed nanoplatelets carbon coated cobalt nanobeads (MnO2–NPs@Co/C) are chosen as materials supercapacitor. With Co/C mass loading 19 wt %,...

A three dimensional porous carbon nanomembrane (CNM), silica-supported CNM (SS-CNM), is developed by formation of a self-assembled monolayer an enediyne compound on the surface mesoporous silica (SBA-15) followed Bergman cyclization and carbonization. The SS-CNM applied as conductive support for electroactive material Co3O4 to fabricate advanced supercapacitors. large fraction clusters (66% total weight) are impregnated in host form regularly packed nanorods with diameters 7 nm. specific...

Increasing the electrical conductivity of pseudocapacitive materials without changing their morphology is an ideal structural solution to realize both high electrochemical performance and superior flexibility for all solid state supercapacitor (ASSSC). Herein, we fabricate a flexible ASSSC device employing black titania (TiO2−x:N) decorated two-dimensional (2D) NiO nanosheets as positive electrode mesoporous graphene negative electrode. In this unique design, are used TiO2−x:N nanoparticles...

Electrochemical capacitors (ECs) have traditionally been considered as standing at the opposite end against batteries in energy–power diagram. They charge and discharge faster than but are limited by much lower energy density. By optimizing pore structure of porous electrode materials, performance ECs could overcome this limitation. However to date, no study has addressed complex relationship between texture parameters materials supercapacitance ECs. Using silica-supported carbon...

Highly ordered metal oxide nanorods (MnO2, SnO2, NiO) inside mesoporous silica supported carbon nanomembranes have been applied for electroactive materials to fabricate symmetrical supercapacitors. Maximum specific capacitance of the obtained cells reaches up 964 F g–1 in aqueous electrolyte with energy density 33.5 Wh kg–1 a 1 V voltage window, which are among highest values two electrodes supercapacitor employing similar oxide/carbon materials. This high performance is attributed from...

Abstract In aqueous rechargeable zinc–manganese dioxide batteries (ZMBs), some irreversible side reactions, such as Mn 2+ dissolution, often lead to capacity fading over cycling. These reactions play a crucial role in the and cycle performance of battery. The implementation bionic electrode microskin (EMS) composed collagen hydrolysate convert into reversible is reported. proposed EMS effectively adsorbs confines ions around cathode through van der Waals forces, hydrogen bonds, and/or ionic...

Abstract Soluble conjugated polymeric nanoparticles are synthesized by Suzuki‐type polycondensation of two monomers (A x + B y , x>2, y≥2) in the channel ordered mesoporous silica‐supported carbon nanomembranes (nanoreactors). These soluble microporous polymers (SCMPs) exhibit uniform particle‐size distributions and well‐controlled particle sizes. The control size stems from fact that polycondensations exclusively take place inside mesochannels nanoreactors. Photoluminescence studies show...

In this work, a bottom-up synthesis of ultrathin mesoporous carbon was developed through Bergman cyclization enediyne containing compounds immobilized inside SBA-15 nanochannels and followed by pyrolysis. Raman spectroscopy confirmed the occurrence thermal channels. Further heating under elevated temperature produced nanotube arrays in good yield. TEM images revealed formation interconnected tubular due to microtunnels template. spectra showed moderate degree graphitization. Formation SAMs...

Microporous organic polymers (MOPs) encapsulated with palladium nanoparticles (NPs) and immobilized on magnetic Co/C nanobeads show excellent activity in hydrogenation reactions of alkenes, alkynes, nitro arenes turnover frequencies (TOFs) up to 3000 h–1. The core the ensures an easy fast recyclability for at least six consecutive runs by applying external magnet recapture catalyst. catalytic system reported here uses cross-linked toluene as a polymer structure is readily prepared via...

In aqueous rechargeable zinc-ion batteries (ARZIBs), electrolytes tend to initiate structure changes of metal oxides and conductive agents the electrode, which leads rapid capacity degradation. this work, we report an artificial cathode–electrolyte interface (CEI) composed paraffin that provides a trade-off between Zn2+ intercalation kinetics stability cathode materials. Such paraffin-based CEI can either suppress Mn2+ dissolution hence stabilize MnO2, or prevent water contact with graphite...

This work reports synthesis of "rod−coil" brush polymers with rigid conjugated backbone. "Grafting through" strategy was employed via combination ring-opening polymerization (ROP) and Bergman cyclization polymerization. Enediyne-containing macromonomers were first synthesized through ROP caprolactone dual-functional initiators conceiving free hydroxy groups dialkynylbenzene moieties. After protection terminal group PCL chain removal trimethylsilyl protecting enediyne unit, the subjected to...