A5001417474- Ferroelectric and Piezoelectric Materials
- Electrocatalysts for Energy Conversion
- Multiferroics and related materials
- Catalytic Processes in Materials Science
- Dielectric materials and actuators
- High Entropy Alloys Studies
- Microwave Dielectric Ceramics Synthesis
- Electronic and Structural Properties of Oxides
- Catalysis and Oxidation Reactions
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- High-Temperature Coating Behaviors
- Graphene research and applications
- Advanced battery technologies research
- Nanocluster Synthesis and Applications
- nanoparticles nucleation surface interactions
- Thermal properties of materials
- Quantum Dots Synthesis And Properties
- Advanced Sensor and Energy Harvesting Materials
- Nanoparticles: synthesis and applications
- Electrochemical Analysis and Applications
- Nanomaterials for catalytic reactions
- Acoustic Wave Resonator Technologies
- Ammonia Synthesis and Nitrogen Reduction
- Gold and Silver Nanoparticles Synthesis and Applications
University of Maryland, College Park
2018-2025
Yale University
2025
Xi'an Jiaotong University
2016-2022
Park University
2019
China XD Group (China)
2017-2018
Frontier Science Foundation
2017
Institute of Science and Technology
2017
Materials Research Center
2017
Northwestern Polytechnical University
2014-2015
Abstract Ammonia represents a promising liquid fuel for hydrogen storage, but its large-scale application is limited by the need precious metal ruthenium (Ru) as catalyst. Here we report on highly efficient ammonia decomposition using novel high-entropy alloy (HEA) catalysts made of earth abundant elements. Quinary CoMoFeNiCu nanoparticles are synthesized in single solid-solution phase with robust control over Co/Mo atomic ratio, including those ratios considered to be immiscible according...
We developed a computationally aided alloy synthesis in the multi-element space toward highly efficient and durable catalysts.
Passive daytime radiative cooling materials could reduce the energy needed for building up to 60% by reflecting sunlight and emitting long-wave infrared (LWIR) radiation into cold Universe (~3 kelvin). However, developing passive structures that are both practical manufacture apply while also displaying long-term environmental stability is challenging. We developed a randomized photonic composite consisting of microporous glass framework features selective LWIR emission along with relatively...
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)...
Bimetallics are emerging as important materials that often exhibit distinct chemical properties from monometallics. However, there is limited access to homogeneously alloyed bimetallics because of the thermodynamic immiscibility constituent elements. Overcoming inherent in bimetallic systems would create a library with unique properties. Here, we present nonequilibrium synthesis strategy address challenge bimetallics. As proof concept, synthesize broad range Cu-based nanoparticles regardless...
Abstract Nanoparticles supported on carbonaceous substrates are promising electrocatalysts. However, achieving good stability for the electrocatalysts during long‐term operations while maintaining high activity remains a grand challenge. Herein, highly stable and active electrocatalyst featuring high‐entropy oxide (HEO) nanoparticles uniformly dispersed commercial carbon black is reported, which synthesized via rapid high‐temperature heating (≈1 s, 1400 K). Notably, HEO with record‐high...
Abstract Aqueous Zn ion batteries (ZIBs) are one of the most promising battery chemistries for grid‐scale renewable energy storage. However, their application is limited by issues such as dendrite formation and undesirable side reactions that can occur in presence excess free water molecules ions. In this study, a nanocellulose‐carboxymethylcellulose (CMC) hydrogel electrolyte demonstrated features stable cycling performance high 2+ conductivity (26 mS cm −1 ), which attributed to material's...
Abstract A single‐atom Pt 1 /CeO 2 catalyst formed by atom trapping (AT, 800 °C in air) shows excellent thermal stability but is inactive for CO oxidation at low temperatures owing to over‐stabilization of 2+ a highly symmetric square‐planar O 4 coordination environment. Reductive activation form nanoparticles (NPs) results enhanced activity; however, the NPs are easily oxidized, leading drastic activity loss. Herein we show that tailoring local environment isolated thermal‐shock (TS)...
High-entropy nanoparticles have received notable attention due to their tunable properties and broad material space. However, these are not suitable for certain applications (e.g., battery electrodes), where microparticle (submicron micron) counterparts more preferred. Conventional methods used synthesizing high-entropy often involve various ultrafast shock processes. To increase the size thereby achieving microparticles, longer reaction time heating duration) is usually used, which may also...
Electrochemical reduction of nitrate to ammonia (NH3) converts an environmental pollutant a critical nutrient. However, current electrochemical operations based on monometallic and bimetallic catalysts are limited in NH3 selectivity catalyst stability, especially acidic environments. Meanwhile, with dispersed active sites generally exhibit higher atomic utilization distinct activity. Herein, we report multielement alloy nanoparticle Ru (Ru-MEA) other synergistic components (Cu, Pd, Pt)....
Due to the large multi-elemental space desired for property screening and optimization, high-entropy alloys (HEAs) hold greater potential over conventional a range of applications, such as structural materials, energy conversion, catalysis. However, relationship between HEA composition its local structural/elemental configuration is not well understood, particularly in noble-metal-based nanomaterials, hindering design development nano-HEAs conversion catalysis applications. Herein, we...
Two-dimensional (2D) materials (e.g., boron nitride (BN), graphene, and MoS2) have great potential in emerging energy, environmental, electronics applications. Assembly of 2D into vertically aligned structures is highly desirable low tortuosity for rapid ion transport fast charging-discharging batteries, guiding thermal efficient management), yet extremely challenging due to the energetically unfavorable processing. Herein, we reported a general three-dimensional (3D) printing method...
Abstract Reduced graphene oxide (RGO) films are promising in applications ranging from electronics to flexible sensors. Though high electrical and thermal conductivities have been reported for RGO films, existing conductivity data show large variations 30 2600 W m −1 K . Further, there is a lack of at low temperatures (<300 K), which critical the understanding transport mechanisms. In this work, temperature‐dependent study (10–300 K) (10–3000 annealed indicates potential application...
Abstract Direct formation of ultra-small nanoparticles on carbon supports by rapid high temperature synthesis method offers new opportunities for scalable nanomanufacturing and the stable multi-elemental nanoparticles. However, underlying mechanisms affecting dispersion stability during processing remain enigmatic. In this work, we report observation metallic stabilization through in situ Joule heating method. We find that is associated with simultaneous phase transition amorphous to a...
Novel A-site deficient (1-x-y)Bi0.5Na0.5TiO3-xBaTiO3-yBi0.2Sr0.7TiO3 lead-free relaxor ferroelectrics have been explored for energy storage property. Particularly slim polarization hysteresis (P-E) loops are observed in 0.655Bi0.5Na0.5TiO3-0.065BaTiO3-0.28Bi0.2Sr0.7□0.1TiO3 (6.5BNBT-BST) at ambient temperature resulting a giant recoverable density (Wrec = 1.5 J cm−3) and extremely high efficiency (η 90%) 100 kV cm−1, which closed related to the track of P-E loops. As addition Bi0.2Sr0.7TiO3...
Abstract Li metal holds great promise to be the ultimate anode choice owing its high specific capacity and low redox potential. However, processing into thin‐film with electrochemical performance good safety match commercial cathodes remains challenging. Herein, a new method is reported prepare ultrathin, flexible, high‐performance Li–Sn alloy anodes various shapes on number of substrates by directly stamping molten solution. The printed as thin 15 µm, corresponding an areal ≈3 mAh cm –2...
BT-13CH exhibits a large electrocaloric effect over broad temperature range because of multiphase coexistence (MPC) with diffuse phase transition (DPT) character.
Off-stoichiometry of perovskite structural Bi0.5Na0.5TiO3 (BNT) ferroelectrics can give rise to considerable oxide-ion conductivity. The inherent characteristics are urgent be resolved due its particular sensitivity the conduction mechanism nominal composition and synthesis process. Herein, a thorough study temperature-dependent neutron, X-ray diffraction Raman spectrum is carried out on series equivalently substituted A-site deficient non-stoichiometric pristine BNT. Phase transition defect...