A5078984036- Advancements in Battery Materials
- Advanced Battery Technologies Research
- Advanced Battery Materials and Technologies
- Advanced battery technologies research
- Supercapacitor Materials and Fabrication
- Electrochemical Analysis and Applications
- Advanced Sensor and Energy Harvesting Materials
- Electrocatalysts for Energy Conversion
- Conducting polymers and applications
- Fuel Cells and Related Materials
- Electron and X-Ray Spectroscopy Techniques
- Extraction and Separation Processes
- Energy Harvesting in Wireless Networks
- Semiconductor materials and devices
- Innovative Energy Harvesting Technologies
- Electrodeposition and Electroless Coatings
- Advanced Electron Microscopy Techniques and Applications
- Ferroelectric and Piezoelectric Materials
- Anodic Oxide Films and Nanostructures
- Wireless Power Transfer Systems
- VLSI and Analog Circuit Testing
- Recycling and Waste Management Techniques
- Electrostatics and Colloid Interactions
- ZnO doping and properties
- Nuclear and radioactivity studies
Columbia University
2019-2025
Earth Island Institute
2020-2022
Princeton University
2013-2021
Palo Alto Research Center
2011-2021
Princeton Public Schools
2015-2020
Environmental Earth Sciences
2019
University of Pennsylvania
2014
City College of New York
2009-2013
CUNY Energy Institute
2010-2013
City University of New York
2011-2013
Developing the ability to 3D print various classes of materials possessing distinct properties could enable freeform generation active electronics in unique functional, interwoven architectures. Achieving seamless integration diverse with printing is a significant challenge that requires overcoming discrepancies material addition ensuring all are compatible process. To date, has been limited specific plastics, passive conductors, and few biological materials. Here, we show can be printed...
Compliant battery design strategy for wearable power sources with high degree of flexibility and stretchability.
A stretchable alkaline battery based on a embedded silver fabric is fabricated with an open circuit potential (OCV) of 1.5 V and capacity 3.775 mAh/cm2. No drop in discharge observed strain up to 100%. Two batteries connected series continued power red LED even when stretched 150% twisted by 90 degrees. Detailed facts importance specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted the...
Highly flexible, printed alkaline batteries based on a mesh-embedded architecture are demonstrated. The mesh acts as support for the electroactive material during flexing. Two cells connected in series and bent to radius of 0.3 cm used power green light-emitting diode (LED).
Electrochemical-acoustic time of flight analysis for simple<italic>in operando</italic>determination mechanical evolution, state-of-charge, and state-of-health any closed battery.
Early demonstrations of wearable devices have driven interest in flexible lithium‐ion batteries. Previous batteries trade off between low areal capacity, poor mechanical flexibility and/or high thickness inactive components. Here, a reinforced electrode design is used to support the active layers battery and freestanding carbon nanotube (CNT) layer as current collector. The supported architecture helps increase capacity (mAh cm ‐2 ) improve tensile strength electrodes. Batteries based on...
Ultrasonic analysis was used to predict the state of charge and health lithium-ion pouch cells that have been cycled for several hundred cycles. The repeatable ultrasonic trends are reduced two key metrics: time flight shift total signal amplitude, which then with voltage data in a supervised machine learning technique build model (SOC) prediction. Using this model, cell SOC is predicted ∼1% accuracy both lithium cobalt oxide iron phosphate cells. Elastic wave propagation theory explain...
Abstract This roadmap includes the perspectives and visions of leading researchers in key areas flexible printable electronics. The covered topics are broadly organized by device technologies (sections 1–9), fabrication techniques 10–12), design modeling approaches 13 14) essential to future development new applications leveraging electronics (FE). interdisciplinary nature this field involves everything from fundamental scientific discoveries engineering challenges; synthesis materials via...
Abstract Traditional printing methods offer the advantage of well‐matured technology, high accuracy depositing inks over flexible substrates at web speeds, and low cost fabrication. The components a battery—the current collectors, active layers, separator—can all be deposited using conventional techniques by designing suitable inks. A combination thickness printed electrodes, packaging, battery architecture, material properties makes batteries flexible. In this paper, we will discuss...
The low cost, significant reduction potential and relative safety of the zinc electrode is a common hope for reductant in secondary batteries, but it limited mainly to primary implementation due shape change. In this work, we exploit such change benefit static electrodes through electrodeposition hyper-dendritic nanoporous foam. Electrodeposition foam resulted nanoparticles formed on dendrites three-dimensional network with particle size distribution 54.1–96.0 nm. contributed highly oriented...
Mechanically flexible arrays of alkaline electrochemical cells fabricated using stencil printing onto fibrous substrates are shown to provide the necessary performance characteristics for driving ink-jet printed circuits. Due dimensions and material set currently required reliable low-temperature print processing electronic devices, a battery potential greater than that sourced by single is typically needed. The developed series interconnected array 10 low resistance Zn-MnO2 cells, giving an...
Wireless sensor networks have become integral to enabling numerous applications for the Internet of Things, such as environmental sensing or healthcare monitoring. Powering these has been focus significant research efforts due need reliable and continuous operation nodes. In this review, we outline progress made in nodes with a particular on their power demands. These requirements are used framework surveying theoretical limits developments various sources, including energy storage,...
A novel super ink jet printing (SIJP) system was used to fabricate 3D zinc–silver microbatteries directly on a substrate. The SIJP provides simple and flexible method deposit interesting 2D structures of varying morphologies without the waste large energy inputs typical standard microfabrication technologies. print pairs silver electrodes with arrays pillars glass substrates, in presence an electrolyte, battery self-assembled during first charge. Using aqueous electrolyte solution KOH...
A Bi2O3 in β-MnO2 composite cathode material has been synthesized using a simple hydrothermal method and cycled mixed KOH–LiOH electrolyte with range of concentrations. We show that, at KOH:LiOH molar ratio 1:3, both proton insertion lithium occur, allowing access to higher fraction the theoretical capacity MnO2 while preventing formation ZnMn2O4. This enables 360 mAh/g for over 60 cycles, cycling limited more by anode properties than traditional cathodic failure mechanisms. The structural...
A minimal-architecture zinc–bromine battery that eliminates expensive balance-of-plant components is demonstrated with stable performance and low cost.
The characterization and detection of lithium metal plating during standard operation commercial Li-ion batteries has been a long-term challenge; the nature is unpredictable highly dependent on operating temperature charge rate. In operando critical for ongoing future developments conventional batteries, including fast charging capabilities, extreme applications, secondary batteries. this study, we describe use acoustic ultrasound to detect graphite anodes within form factor. Extending from...
Fabrication of a flexible wire battery assembled by utilizing low-cost fabrication processes and based on silver–zinc chemistry is reported. It offers unique versatility in terms integration with wearable technologies due to its omnidirectional flexibility improved performance characteristics. The stable over 170 cycles capacity retention above 98% has linear ranging between 1.2 1.8 mAh cm−1 at 0.5C discharge rate.
Energy dispersive X-ray diffraction (EDXRD) with photons of high energy and flux is used to map crystalline discharge products within alkaline AA cells following at various rates: C/160, C/80, C/40, C/20, C/10, C/5. During the study, sealed are never opened thus exposed air. The technique's resolution allows manganese oxide be distinguished, which has previously proven difficult. In particular, colocalized Mn3O4 (hausmannite) ZnMn2O4 (hetaerolite) phases resolved C/40 rates. Following more...