A5048443039- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Advanced battery technologies research
- Extraction and Separation Processes
- Supercapacitor Materials and Fabrication
- Advanced biosensing and bioanalysis techniques
- Infrastructure Maintenance and Monitoring
- Conducting polymers and applications
- Bacteriophages and microbial interactions
- Robotic Path Planning Algorithms
- Electron and X-Ray Spectroscopy Techniques
- Advancements in Photolithography Techniques
- Inorganic Chemistry and Materials
- Recycling and Waste Management Techniques
- Fuel Cells and Related Materials
- X-ray Spectroscopy and Fluorescence Analysis
- Domain Adaptation and Few-Shot Learning
- Inorganic and Organometallic Chemistry
- Advanced Neural Network Applications
- RNA and protein synthesis mechanisms
- Ionic liquids properties and applications
- TiO2 Photocatalysis and Solar Cells
- Virus-based gene therapy research
- Solid-state spectroscopy and crystallography
Chungbuk National University
2023-2024
San Jose State University
2017-2024
Purdue University West Lafayette
2024
Davidson College
2020-2021
IBM Research - Almaden
2017-2019
Massachusetts Institute of Technology
2011-2016
Solid-electrolyte interphase (SEI) is the key component that enables all advanced electrochemical devices, best representative of which Li-ion battery (LIB). It kinetically stabilizes electrolytes at potentials far beyond their thermodynamic stability limits, so cell reactions could proceed reversibly. Its ad hoc chemistry and formation mechanism has been a topic under intensive investigation since first commercialization LIB 25 years ago. Traditionally SEI can only be formed in nonaqueous...
Transition metal oxides are promising electrocatalysts for both water oxidations and metal–air batteries. Here, we report the virus-mediated synthesis of cobalt manganese oxide nanowires (NWs) to fabricate high capacity Li–O2 battery electrodes. Furthermore, hybridized Ni nanoparticles (NPs) on bio Co3O4 NWs improve round trip efficiency as well cycle life This biomolecular directed method is expected provide a selection platform future energy storage electrocatalysts.
We report the synthesis and electrochemical activity of gold silver noble metals their alloy nanowires using multiple virus clones as anode materials for lithium ion batteries. Using two clones, one specificity (p8#9 virus) versatility (E4 virus), metal high-aspect ratio with diameters below 50 nm were successfully synthesized control over particle sizes, morphologies, compositions. The biologically derived showed activities toward even when electrodes prepared from bulk powder forms....
Utilization of the material-specific peptide–substrate interactions M13 virus broadens colloidal stability window graphene. The homogeneous distribution graphene is maintained in weak acids and increased ionic strengths by complexing with virus. This graphene/virus conducting template utilized synthesis energy-storage materials to increase conductivity composite electrode. Successful formation hybrid biological demonstrated mineralization bismuth oxyfluoride as a cathode material for...
All-solid-state batteries (SSBs) are one of the most fascinating next-generation energy storage systems that can provide improved density and safety for a wide range applications from portable electronics to electric vehicles. The development SSBs was accelerated by discovery new materials design nanostructures. In particular, advances in growth thin-film battery facilitated all solid-state (SSTFBs)—expanding their microelectronics such as flexible devices implantable medical devices....
The filamentous M13 viruses are widely used as a bio‐template to assemble many different functional structures. In this work, based on its shape anisotropy, reasonable aspect ratio (length diameter of ≈130), and low density, freestanding, bulk 3D aerogels assembled from for the first time. These ultralight porous structures demonstrate excellent mechanical properties with elastic behavior up 90% compression. Furthermore, genome virus can be rationally engineered so that proteins capsid or...
Replacing flammable organic electrolytes with aqueous in lithium-ion batteries (LIB) can greatly enhance the safety of next-generation energy storage systems. With extended electrochemical stability window electrolytes, 'water-in-salt' (WIS) containing LIB presented significant performance improvements. However, solubility limits lithium salts water restrain extent kinetic protection offered by high salt concentration. Here, we report design strategies anode structure to improve cycle life...
Synthetic porogens provide an easy way to create porous structures, but their usage is limited due synthetic difficulties, process complexities and prohibitive costs. Here we investigate the use of bacteria, sustainable naturally abundant materials, as a pore template. The bacteria require no chemical synthesis, come in variable sizes shapes, degrade easier are approximately million times cheaper than conventional porogens. We fabricate free standing multiwalled carbon nanotube (MWCNT) films...
Li–oxygen batteries could provide energy density that is up to five times greater than of state-of-the-art Li-ion batteries. However, cell rechargeability limited by cathode passivation due nonconductive discharge products. Despite efforts efficiently oxidize these products, oxygen recovery remains poor at potentials where constituents are stable. Transition metal oxide (TMO) cathodes have shown low charging potentials, but a correspondence improved evolution efficiency debated. This because...
Composite polymer electrolytes (CPEs) strike an effective balance between ionic conductivity and mechanical flexibility for lithium-ion solid-state batteries. Long-term performance, however, is limited by capacity fading after hundreds of charge discharge cycles. The causes performance degradation include multiple contributing factors such as dendrite formation, physicochemical changes in electrolytes, structural remodeling porous electrodes. Among the many that contribute to degradation,...
Miniature batteries can accelerate the development of mobile electronics by providing sufficient energy to power small devices. Typical microbatteries commonly use thin-film inorganic electrodes based on Li-ion insertion reaction. However, they rely complicated synthesis method inorganics containing many elements. Graphene, one atomic layer thick carbon sheet, has diverse physical and chemical properties is compatible with conventional micron-scale device fabrication. Here, we study vapor...
The development of electrocatalysts has emerged as an important aspect rechargeable lithium–oxygen (Li–O2) batteries due to the fact that they facilitate formation and decomposition discharge products, leading a higher capacity cyclability. Herein, we demonstrate ruthenium oxide (RuO2) inverse opal (IO), which possesses three-dimensionally ordered porous network, been developed applied Li–O2 battery cathode. RuO2 IO cathode contributes reduction charge overpotential by up ∼120 mV in lithium...
In extreme ultraviolet (EUV) resists, due to the high energy of incident photons, most radiation chemistry arises from photon-generated primary and secondary electrons not EUV photons themselves. These are generated by a cascade inelastic scattering events, have wide range energies, play leading role in patterning initiating chemical transformations. To characterize electron-induced transformations we exposed photoresist films an electron beam 7-9 mm diameter with energies varied 20 80 eV...
Polyethylene oxide (PEO)-based solid composite electrolytes (SCEs), incorporating fillers, are under extensive investigation due to their enhanced mechanical and electrochemical properties when compared individual counterparts. However, the correlation between composition of SCEs behavior has been studied within a limited range, primarily focusing on type polymer matrix with bias towards high lithium (Li) salt. In this study, we examined changes in at two different salt ratios PEO-LiTFSI...
This study addresses the gap in research concerning segmentation of smaller infrastructure, such as fire hydrants, within large-scale point cloud models. The RandLA-Net model, an efficient and robust deep learning algorithm known for its ability to process vast quantities data while maintaining high accuracy rapidly, was evaluated this task. A comprehensive dataset constructed using LiDAR technology gather from diverse urban scenes. manually segmented assign unique class identifiers distinct...
BackgroundIn extreme ultraviolet (EUV) photoresist exposure, the primary and secondary electrons drive chemistry rather than EUV photons themselves. These have a wide range of energies below approximately 80 eV, which are capable complex network reactions during exposure.AimTo better understand ability different within electron range, we want to characterize compare induced in pure polymer films by direct exposure electrons.ApproachThin poly(tert-butyl methacrylate), poly(methyl...
In the field of energy storage materials, development robust solid polymer electrolytes for lithium-ion batteries necessitates an understanding ionic conductivity when subjected to mechanical stress. Accurate determination requires knowing electrolyte thickness, which is subject volumetric changes during charging and discharging solid-state batteries. However, compressive stress reduces thickness by indeterminate amount. This work presents experimental measurements as a function stress,...
Coatings with antibiofilm properties are desirable for biomedical applications. Titanium dioxide (TiO
Polyethylene oxide (PEO)-based solid composite electrolytes (SCEs), with inorganic fillers, are studied extensively due to their effective balance between mechanical and electrochemical properties. The correlation the composition of SCEs...
Maintaining the visibility of targets is one major objectives aerial tracking applications. This paper proposes QP Chaser, a trajectory planning pipeline that can enhance single- and dual-target in both static dynamic environments. As name suggests, proposed planner generates target-visible via quadratic programming problems. First, predictor forecasts reachable sets moving objects with sample-and-check strategy considering obstacles. Subsequently, reinforces consideration 1) path topology...
Automated inspection systems utilizing computer vision technology are effective in managing traffic control devices (TCDs); however, they face challenges due to the limited availability of training datasets and difficulty generating new datasets. To address this, our study establishes a benchmark for cost-effective model methods that achieve desired accuracy using data from related domains YOLOv5, one-stage object detector known its high speed. In this study, three cases were developed...