A5018678298- Conducting polymers and applications
- Electrocatalysts for Energy Conversion
- Organic Electronics and Photovoltaics
- Perovskite Materials and Applications
- Fuel Cells and Related Materials
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Electrochemical Analysis and Applications
- MXene and MAX Phase Materials
- Quantum Dots Synthesis And Properties
- Nanowire Synthesis and Applications
- Advanced battery technologies research
- Carbon Nanotubes in Composites
- Graphene research and applications
- Metallic Glasses and Amorphous Alloys
- Advanced Battery Technologies Research
- Semiconductor materials and devices
- 2D Materials and Applications
- Advanced Memory and Neural Computing
- Chalcogenide Semiconductor Thin Films
- Analytical Chemistry and Sensors
- Supercapacitor Materials and Fabrication
- Organic Light-Emitting Diodes Research
- Transition Metal Oxide Nanomaterials
- Membrane Separation Technologies
New York University
2018-2025
National Renewable Energy Laboratory
2023-2024
First Solar (United States)
2023
Yale University
2012-2021
Brooklyn College
2018-2019
University of New Haven
2015-2017
Interface (United States)
2013-2017
University of Electronic Science and Technology of China
2017
Johns Hopkins University
2017
Systems Engineering Research Center
2016
Abstract Lightweight, flexible, and electrically conductive thin films with high electromagnetic interference (EMI) shielding effectiveness are highly desirable for next‐generation portable wearable electronic devices. Here, spin spray layer‐by‐layer (SSLbL) to rapidly assemble Ti 3 C 2 T x MXene‐carbon nanotube (CNT) composite is shown their potential EMI demonstrated. The SSLbL technique allows strategic combinations of nanostructured materials polymers providing a rich platform developing...
MXenes, a new family of two-dimensional structures, have recently gained significant attention due to their unique physical properties suitable for wide range potential applications. Here we introduce Ti3C2Tx delaminated monolayers as ultrathin transparent conductors with exceeding comparable reduced graphene oxide films. Solution processed films exhibit sheet resistances low 437 Ω sq-1 77% transmittance at 550 nm. Field effect transistor measurements confirm that these metallic nature,...
In this study, we present a facile and scalable approach to fabricate omniphobic nanofiber membranes by constructing multilevel re-entrant structures with low surface energy. We first prepared positively charged mats electrospinning blend polymer-surfactant solution of poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) cationic surfactant (benzyltriethylammonium). Negatively silica nanoparticles (SiNPs) were grafted on the electrospun nanofibers via dip-coating achieve structures....
Multimetallic nanoclusters (MMNCs) offer unique and tailorable surface chemistries that hold great potential for numerous catalytic applications. The efficient exploration of this vast chemical space necessitates an accelerated discovery pipeline supersedes traditional "trial-and-error" experimentation while guaranteeing uniform microstructures despite compositional complexity. Herein, we report the high-throughput synthesis extensive series ultrafine homogeneous alloy MMNCs, achieved by 1)...
Electrochemical devices have the potential to pose powerful solutions in addressing rising energy demands and counteracting environmental problems. However, currently, these suffer from meager performance due poor efficiency durability of catalysts. These suboptimal characteristics hampered widespread commercialization. Here we report on Pt(57.5)Cu(14.7)Ni(5.3)P(22.5) bulk metallic glass (Pt-BMG) nanowires, whose novel architecture outstanding circumvent problems electrochemical devices. We...
Carrier transport characteristics in high-efficiency single-walled carbon nanotubes (SWNTs)/silicon (Si) hybrid solar cells are presented. The were fabricated by depositing intrinsic p-type SWNT thin-films on n-type Si wafers without involving any high-temperature process for p-n junction formation. optimized showed a device ideality factor close to unity and record-high power-conversion-efficiency of >11%. By investigating the dark forward current density with varying temperature, we have...
Abstract Electrochemical processes in lithium–oxygen (Li–O 2 or Li–air) batteries are complex, with chemistry depending on cycling conditions, electrode materials and electrolytes. In non‐aqueous Li–O cells, reversible lithium peroxide (Li O ) irreversible parasitic products (i.e., LiOH, Li CO 3 , O) common. Superoxide intermediates (O − LiO contribute to the formation of these species transiently stable their own right. While characterization techniques like XRD, XPS FTIR have been used...
Despite being the most commonly used hole transport layer for p-i-n perovskite solar cells, conventional PEDOT:PSS is far from optimal best photovoltaic performance. Herein, we demonstrate highly conductive thin DMSO-doped layers which significantly enhance light harvesting, charge extraction, and photocurrent production of organo-lead iodide devices. Both imaging X-ray analysis reveal that films grown on exhibit larger grains with increased crystallinity. Altogether, these improvements...
Abstract One of the greatest challenges with lithium-oxygen batteries involves identifying catalysts that facilitate growth and evolution cathode species on an oxygen electrode. Heterogeneous solid cannot adequately address problematic overpotentials when surfaces become passivated. However, there exists a class biomolecules which have been designed by nature to guide complex solution-based chemistries. Here, we show heme molecule, common porphyrin cofactor in blood, can function as soluble...
Heterogeneous electrode materials with hierarchical architectures promise to enable considerable improvement in future energy storage devices. In this study, we report on a tailored synthetic strategy used create heterogeneous tungsten sulfide/oxide core-shell nanofiber vertically and randomly aligned thorn-bush features, evaluate them as potential anode for high-performance Na-ion batteries. The WSx (2 ≤ x 3, amorphous WS3 crystalline WS2) is successfully prepared by electrospinning...
Abstract The emerging molybdenum disulfide (MoS 2 ) offers intriguing possibilities for realizing a transformative new catalyst driving the hydrogen evolution reaction (HER). However, trade‐off between catalytic activity and long‐term stability represents formidable challenge has not been extensively addressed. This study reports that metastable temperature‐sensitive chemically exfoliated MoS (ce‐MoS can be made into electrochemically stable (5000 cycles), thermally robust (300 °C) while...
A high-strength composite is formed by the hierarchical assembly of electrically conductive two-dimensional MXenes in a nacre-inspired structure.
Recently, two-dimensional (2D) organic–inorganic perovskites emerged as an alternative material for their three-dimensional (3D) counterparts in photovoltaic applications with improved moisture resistance. Here, we report a stable, high-gain phototransistor consisting of monolayer graphene on hexagonal boron nitride (hBN) covered by 2D multiphase perovskite heterostructure, which was realized using newly developed two-step ligand exchange method. In this phototransistor, the multiple phases...
The development of thick organic photovoltaics (OPV) could increase absorption in the active layer and ease manufacturing constraints large-scale solar panel production. However, efficiencies most low-bandgap OPVs decrease substantially when layers exceed ∼100 nm thickness (because low crystallinity a short exciton diffusion length). Herein, we report use solvent additive diphenyl ether (DPE) that facilitates fabrication (180 nm) triples power conversion efficiency (PCE) conventional...
2D graphitic carbon nitride (g-C3 N4 ) nanosheets are a promising negative electrode candidate for sodium-ion batteries (NIBs) owing to its easy scalability, low cost, chemical stability, and potentially high rate capability. However, intrinsic g-C3 exhibits poor electronic conductivity, reversible Na-storage capacity, insufficient cyclability. DFT calculations suggest that this could be due large Na+ ion diffusion barrier in the innate nanosheet. A facile one-pot heating of mixture low-cost...
The p-i-n structure for perovskite solar cells has recently shown significant advantages in minimal hysteresis effects, and scalable manufacturing potential using low-temperature solution processing.