A quartet dual-band electrochromic device (ECD) was developed to selectively control the transmittance from visible near-infrared wavelengths for application of an energy-efficient smart window. The new AgNO3+TBABr+LiClO4 (ATL)-based electrolyte independently redox reaction lithium and silver ions demonstrate mode ECD. ECD with a sandwich structure assembled using ATL-based electrolyte, WO3 layer, antimony-doped tin oxide (ATO) ion storage layer. employed ATO films were fabricated...

Aromatic rings of poly(styrene-b-(ethylene-r-butylene)-b-styrene) triblock copolymer (SEBS) were functionalized with various acid functional groups for proton exchange membrane (PEM) applications. Three different (fluoroalkylsulfonic acid, arylsulfonic and arylphosphonic acid) introduced into SEBS via borylation aromatic C–H bonds Suzuki coupling reactions. The incorporation side selectively the polystyrene block created nanometer-scale phase separated morphology composed hydrophilic...

Physically reinforced short-side-chain perfluorinated sulfonic acid electrolyte membranes were fabricated by annealing and using a porous support. Five types of solution-cast produced from commercial ionomers (3M Aquivion (AQ)) with different equivalent weights, annealed at temperatures, characterized in terms ion conductivity, water uptake, in-plane/through-plane swelling, while the effect on physical structure was evaluated small-angle X-ray scattering dynamic mechanical analysis. To...

Abstract Membrane‐electrode assemblies (MEAs) are fabricated using different catalysts and ionomers, in order to investigate the effects of these factors on performance stability polymer electrolyte membrane fuel cell (PEMFC). Platinum with degrees graphitization carbon support (less graphitized: Tanaka, more RTX) used. Perfluorosulfonic acid polymer‐based ionomers water‐based or organic solvent‐based solvents also prepared as binders for electrode. The optimum composition catalyst ionomer...

Herein, we utilize organic radical scavengers to mitigate the chemical degradation of polymer membranes without sacrificing their proton conductivity. Several hydrocarbon composite based on sulfonated poly(arylene ether sulfone) (SPES50, degree sulfonation = 50%) and containing were prepared characterized in terms water uptake, ion-exchange capacity, conductivity, oxidative stability, being additionally exposed hydrogen peroxide for accelerated stability testing. Precise analysis molecular...

Proton exchange membranes (PEMs) play a critical role in many electrochemical devices that could solve the shortcomings of current energy storage and conversion systems. Hydrocarbon-based PEMs are an attractive alternative for replacing state-of-the-art perfluorosulfonic acid PEMs; however, synthetic routes generally limited to sulfonation aromatic units (pre- or postpolymerization functionalization). Here we disclose facile scalable one-pot method converting alkyl halide functionality...

This study investigated the manufacturing conditions and properties of Ti<sub>47</sub>Cu<sub>38</sub>Zr<sub>7.5</sub>Fe<sub>2.5</sub>Sn<sub>2</sub>Si<sub>1</sub>Ag<sub>2</sub> amorphous bulk metallic glass (BMG) to examine its applicability for scalpels medical use. Ti-base BMG alloys have excellent mechanical biocompatibility, making them a suitable scalpel material. In this study, vacuum suction casting...

Quaternized multiblock poly(phenylene-co-arylene ether)s (QPPs) are synthesized from a pre-aminated monomer and series of chlorine-terminated oligo(arylene-ethers) via nickel coupling reaction. Their properties investigated as anion exchange membranes with the goal obtaining enhanced performance durability for alkaline membrane fuel cell applications. Three different oligo(arylene ethers) were introduced in hydrophobic block polymer backbone to study its effect on properties. The chloride...

Abstract The electrochromic mirror device (ECD) demonstrating transparent, mirror, and black states with zero transmittance in the state is fabricated using facile dry deposition method. capable of achieving both a highly reflective complete state. ECD WO 3 film deposited by nanoparticle system (NPDS) optical characteristics its are evaluated. Notably, demonstrates high reflectance over 80% that completely blocks entire visible light, resulting nearly transmittance. Device durability...

To avoid the increase of cost owing to use Pt group metal (PGM) catalysts, anion-exchange membrane fuel cells (AEMFCs) operating in an alkaline electrolyte environment where non-precious metals can be used are promising. However, performance limitations PGM-free catalysts still need overcome. In this study, Ta-on-NiMo/C fabricated by adding Ta on surface commercial NiMo/C via physical vapor deposition was developed as anodic catalyst for AEMFCs with advanced performance. The high...

A poly(p-phenylene)-based multiblock polymer is developed with an oligomeric chain extender and cerium (CE-sPP-PPES + Ce3+) to realize better performance durability in proton exchange membrane fuel cells. The evaluated single cells at 80 °C 100% 50% relative humidity (RH). accelerated stability test conducted 90 30% RH, during which linear sweep voltammetry hydrogen permeation detection are monitored periodically. Results demonstrate that the conductivity of pristine hydrocarbon membranes...

This study evaluates the chemical and mechanical durability of membranes used in proton exchange membrane fuel cells, highlighting essential role electrochemical tests understanding relationship between performance. Our methodology integrates various evaluation techniques to assess degradation perfluorosulfonic acid (PFSA) membranes. The results highlight considerable improvement annealed 3M PFSA-reinforced composite (RCMs) compared with their non-annealed counterparts other types,...

We explored the efficacy of gas-barrier additives (GBAs) in reducing gas crossover within perfluorosulfonic acid (PFSA) membranes. Nine distinct GBAs were incorporated into Nafion solutions, forming composite membranes for subsequent assessment. Comparative analyses revealed no significant differences water sorption and mechanical properties between GBA pristine However, most GBA-incorporated exhibited a notable reduction hydrogen permeability, indicating an effective decrease crossover....

Perfluorinated polymers are widely used in polymer electrolyte membranes because of their excellent ion conductivity, which attributed to the well-defined morphologies resulting from extremely hydrophobic main-chains and flexible hydrophilic side-chains. containing quaternary ammonium groups were prepared Nafion- Aquivion-based sulfonyl fluoride precursors by Menshutkin reaction give anion exchange membranes. tend exhibit poor solubility organic solvents; however, clear dispersions...

We investigated macromolecular antioxidants to improve the stabilities of polymer electrolyte membranes during fuel cell operation. Fenton's oxidative test was conducted screen scavenging activities five different antioxidants, and Fourier transforms infrared spectroscopy fluoride emission, conductivity, tensile strength analyses were employed monitor their effects on membrane degradation. The proton conductivities water absorption composite comparable those pristine membrane, which may...

ABSTRACT Polymers containing CO 2 ‐philic groups are of great interest for /light gas separation membranes because the affinity toward can effectively increase solubility and thus permeability. In this study, polysulfones (PSUs) modified with different degrees benzyldimethylamine (DMA), benzyltrimethylammonium fluoride (TMAF), iodide (TMAI) were synthesized using sequential post‐functionalization reactions investigated /N /CH 4 separation. The physical properties these polymers studied,...