A5103138023- Conducting polymers and applications
- Supercapacitor Materials and Fabrication
- Advanced Sensor and Energy Harvesting Materials
- Advanced battery technologies research
- Semiconductor materials and interfaces
- Surface Modification and Superhydrophobicity
- Silicon and Solar Cell Technologies
- Advanced Photocatalysis Techniques
- Analytical Chemistry and Sensors
- Electrochemical Analysis and Applications
- CO2 Reduction Techniques and Catalysts
- Polymer composites and self-healing
- Solid-state spectroscopy and crystallography
- Perovskite Materials and Applications
- Epoxy Resin Curing Processes
- TiO2 Photocatalysis and Solar Cells
- Icing and De-icing Technologies
- Nanowire Synthesis and Applications
- Thin-Film Transistor Technologies
- Innovations in Concrete and Construction Materials
- Electrospun Nanofibers in Biomedical Applications
- Solar-Powered Water Purification Methods
- Covalent Organic Framework Applications
- Fuel Cells and Related Materials
- 2D Materials and Applications
Washington University in St. Louis
2017-2023
Abstract Fired brick is a universal building material, produced by thousand-year-old technology, that throughout history has seldom served any other purpose. Here, we develop scalable, cost-effective and versatile chemical synthesis using fired to control oxidative radical polymerization deposition of nanofibrillar coating the conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT). A brick’s open microstructure, mechanical robustness ~8 wt% α-Fe 2 O 3 content afford an ideal substrate...
Efficient and stable organic-silicon heterojunction solar cells are highly desirable. In this work, solution-processed poly(3,4-ethylenedioxythiophene): perfluorinated sulfonic acid (PEDOT:F) is investigated as hole-selective contact for crystalline silicon (c-Si) cells....
Increasing capacitance and energy density is a major challenge in developing supercapacitors for flexible portable electronics. A thick electrode with high mass loading of active electronic material leads to areal capacitance; however, the higher loading, mechanical stiffness ion diffusion resistance, thereby hampering development supercapacitors. Here, we show chemical strategy that hierarchical structure producing devices both an exceedingly superior flexibility. We utilize α-Fe2O3...
Iron corrosion, a product from the chemical reaction between iron and oxygen in presence of water commonly referred to as rust, is heterogeneous solid-state material composed multiple phases that represent an abundant source waste. Here, we introduce strategy advances state-of-the-art synthesis by demonstrating usefulness this ubiquitous inexpensive inorganic for developing oxidative radical polymerizations. Rust, when treated with acid, ideal Fe3+ ions affording oxidation potential 0.77 V...
Abstract Microsupercapacitors (µSCs) are attractive electrochemical energy storage devices serving as alternatives to batteries in miniaturized portable electronics owing high‐power density and extended cycling stability. Current state‐of‐the‐art microfabrication strategies limited by costly steps producing materials with structural defects that lead low density. This paper introduces an electrode engineering platform combines conventional polymerization from the vapor phase 3D µSCs of...
Lack of solution processability is the main bottleneck in research progression and commercialization conducting polymers. The current strategy employing a water-soluble dopant (such as PEDOT:PSS) not feasible with organic solvents, thus limiting compatibility on hydrophobic surfaces, such three-dimensional (3D) printable thermoplastics. In this article, we utilize colloidal dispersion PEDOT particles to overcome limitation formulate an paint demonstrating conformal coating 3D-printed...
Abstract Crystalline silicon ( c ‐Si) solar cells require passivating contacts to unlock their full efficiency potential. For this doped layers are the materials of choice, as they yield device voltages close thermodynamic limit. Yet, replacing such with wide‐bandgap metal oxides may be advantageous from a cost perspective and minimize parasitic optical absorption. Here aluminum‐doped zinc oxide (AZO)‐based high electron selectivity presented. The SiO 2 /AZO/Al O 3 stack is demonstrated...
Transparent superhydrophobic films/coatings have recently gained significant attention in the solar energy field due to their ease of preparation, low cost, self‐cleaning process, and high effectiveness reducing dust adhesion surface. Compared rigid glass cover, organic one has an advantage flexibility light weight, but deposition impact is more serious. The aim present study design a transparent film with good durability on surface, recover module efficiency reduction caused by deposition....
Atmospheric water harvesting is a promising technology for alleviating global scarcity. Current sorption materials efficiently capture vapor from ubiquitous air; however, they are difficult to scale up due high costs, complex device engineering, and intensive energy consumption. Fired red brick, low-cost masonry construction material, holds the potential developing large-scale functional architectures. Here, we utilize fired brick atmospheric by integrating microtubular coating of conducting...
We introduce a novel condensing vapor phase polymerization (CVPP) strategy for depositing microtubes of the conducting polymer polypyrrole; these serve as one-dimensional hollow microstructures storing electrochemical energy. In CVPP, water droplets are structure-directing templates polypyrrole microtubes. Water condensation and occur simultaneously—conformal coatings deposit on porous substrates such hard carbon fiber paper or glass filter paper. A mechanistic evolution microtubular...
The diversity of nanostructures obtained from organic polymerization is limited when compared to the huge amount documented inorganic nanostructures. In this paper, we elucidate a synergistic mechanism between in situ salt hydrolysis and vapor-phase for metal oxide-poly(3,4-ethylenedioxythiophene) (PEDOT) hybrid nanostructure growth. steady state polymer growth kinetically controlled enables homogeneous deposition high-aspect-ratio crystal phases such as β-FeOOH, TeO2, SnO2 coated by...
Atmospheric pollution demands the development of solar-driven photocatalytic technologies for conversion CO2 into a fuel; state-of-the-art cocatalyst systems demonstrate efficiencies currently unattainable by single catalyst. Here, we upend status quo demonstrating that nanofibrillar conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT) is record-breaking catalyst photoreduction to CO. This high catalytic efficiency stems from highly conductive structure significantly enhances surface...
Polypyrrole nanonets exhibiting a high specific capacitance of 518 F g<sup>−1</sup> are synthesized <italic>via</italic> vapor–liquid interfacial polymerization and engineered into electrochemical capacitors.
Current state-of-the-art synthetic strategies produce conducting polymers suffering from low processability and unstable chemical and/or physical properties stifling research development. Here, we introduce a platform for synthesizing scalable submicron-sized particles of the polymer poly(3,4-ethylenedioxythiophene) (PEDOT). The synthesis is based on hybrid approach utilizing an aerosol aqueous oxidant droplets monomer vapor to engineer scheme. This polymerization technology results in bulk...
Nanofibrillar Kirigami electrodes enable superior sensitivity in humidity sensors and state-of-the-art energy density supercapacitors.
Horizontally directed nanofibrillar PEDOT mats bearing high impact energy densities are fabricated as electrodes for impact-resistant flexible supercapacitors.
Characterization of photophysical properties MAPbBr<sub>3</sub> perovskite film with application various static and time-resolved spectroscopies evaluation hole extraction process in the FTO/RVPP-PEDOT/MAPbBr<sub>3</sub> architecture.
ConspectusIron corrosion product, commonly known as rust, forms from the chemical reaction between iron and oxygen in presence of water. It is a heterogeneous solid-state material composed multiple phases ubiquitous throughout universe. Sixteen distinct product exist naturally under different temperature, pH, pressure. Rust species such hematite (α- Fe2O3), maghemite (γ-Fe2O3), goethite (α-FeOOH), lepidocrocite (γ- FeOOH), first documented ca. 800 BCE, make up family oxides, oxyhydroxides,...
Microsupercapacitors (μSCs) are electrochemical energy storage devices serving as alternatives to batteries in miniaturized portable electronics. In article number 2003394, Julio M. D'Arcy and co-workers demonstrate a superior cost-effective route for developing 3D μSCs that directly convert Fe2O3 poly(3,4-ethylenedioxythiophene) (PEDOT) nanofibers one step. A vertically aligned PEDOT electrode possesses exceptional conductivity (3580 S cm−1) results device exhibiting of the highest...