A5007574556- Advanced Sensor and Energy Harvesting Materials
- Conducting polymers and applications
- Advanced Battery Technologies Research
- Supercapacitor Materials and Fabrication
- Electrochemical Analysis and Applications
- Advanced battery technologies research
- Advancements in Battery Materials
- 3D IC and TSV technologies
- Energy Harvesting in Wireless Networks
- Modular Robots and Swarm Intelligence
- Organic Electronics and Photovoltaics
- Transition Metal Oxide Nanomaterials
- Nanomaterials and Printing Technologies
- Electrocatalysts for Energy Conversion
- Thin-Film Transistor Technologies
- Electron and X-Ray Spectroscopy Techniques
- Copper Interconnects and Reliability
- Innovative Energy Harvesting Technologies
- Brucella: diagnosis, epidemiology, treatment
- Metal and Thin Film Mechanics
- Solidification and crystal growth phenomena
- Anodic Oxide Films and Nanostructures
- Recycling and Waste Management Techniques
- Engineering Technology and Methodologies
- Fuel Cells and Related Materials
Symbiosis International University
2023
University of California, Berkeley
2014-2020
CUNY Energy Institute
2010-2015
City College of New York
2009-2015
City University of New York
2011
Palo Alto Research Center
2011
The interfacing of soft and hard electronics is a key challenge for flexible hybrid electronics. Currently, multisubstrate approach employed, where devices are fabricated or assembled on separate substrates, bonded interfaced using connectors; this hinders the flexibility device prone to interconnect issues. Here, single substrate reported, devices, i.e., sensors, directly printed Kapton polyimide substrates that widely used fabricating circuit boards (FPCBs). Utilizing process flow...
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).
Abstract This paper reports on the design and operation of a flexible power source integrating lithium ion battery amorphous silicon solar module, optimized to supply wearable health monitoring device. The consists printed anode cathode layers based graphite cobalt oxide, respectively, thin current collectors. It displays energy density 6.98 mWh/cm 2 demonstrates capacity retention 90% at 3C discharge rate ~99% under 100 charge/discharge cycles 600 mechanical flexing. A module with...
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...
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...
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...
Abstract Additive and low-temperature printing processes enable the integration of diverse electronic devices, both power-supplying power-consuming, on flexible substrates at low cost. Production a complete system from these however, often requires power electronics to convert between various operating voltages devices. Passive components—inductors, capacitors resistors—perform functions such as filtering, short-term energy storage voltage measurement, which are vital in many other...
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.
Flexible lithium-ion batteries are necessary for powering the next generation of wearable electronic devices. In most designs, mechanical flexibility battery is improved by reducing thickness active layers, which in turn reduces areal capacity and energy density battery. The performance a depends on electrode composition, flexible batteries, standard formulation used, not suitable flexing. Even with considerable efforts made toward development electrodes has received very little attention....
Cyclic voltammetry of zinc plated from flowing alkaline zincate electrolyte with a bismuth additive showed marked mass transport effect during metal layer deplating. This was added as Bi2O3 and had saturated concentration 26 ppm bismuth. Using small, transparent window flow cell the mechanism studied in situ using synchrotron X-rays. X-ray microdiffraction revealed that metal-electrolyte interface rich, behaved manner similar to surfactant. Transmission microscopy presence additive, 5 μm...
The morphology evolution of zinc electrodeposited from alkaline ZnO/KOH is imaged in situ using a microfluidic cell. Working and counter electrodes are lateral configuration, separated by flow channel with height 90 m, resulting quasi-twodimensional layers. At rate 0.3 cm/s, packing the highest at current density just above transition porous to dense zinc, i 170 mA/cm 2 . When deposited, compact approximately 3 times as determined image analysis layer. mode invariably leads ramifications...
Abstract Compliant energy storage has not kept pace with flexible electronics. Herein we demonstrate a technique to reinforce arbitrary battery electrodes by supporting them mechanically tough, low‐cost fibrous membranes, which also serve as the separator. The membranes were laminated form full cell, and this stacked membrane reinforcement bears loads during flexing. This was used make high density, nontoxic Zn–MnO 2 printed current collectors. Zn MnO prepared using solution‐based embedding...
Nanoparticulate printed silver is a core material to flexible, circuits. Some commercial silvers are of sufficient purity that one may consider their use in electrochemical power sources and sensors. We establish an iterative rapid prototyping measuring method, printing electrodes, annealing them under temperature conditions from , cycling microfluidic cell such the electrolyte becomes shearing medium. Electrode strength quantified by breakage due generation gas-phase oxygen at electrode....
Systems in which a continuous layer of zinc is electrodeposited from flowing electrolyte have received attention for use large-scale applications, such as peak-shaving batteries. 1 During continual cycling occurs battery, dendrites progressively form. These dendrites, mossy micro-morphology, eventually lead to shorting the cell after many cycles. Periodic “reconditioning cycles” can avoid this shorting, by eliminating surface roughness film. 2 However, reconditioning cycles represent break...
Secondary battery anodes based on zinc are desirable due to the energy density, water-compatibility, and inexpensive nature of zinc. Zinc found in many configurations, with two examples being 1) a continuous layer electrodeposited current collector 2) paste particles pressed collector. Regardless configuration, all face challenge dendrite formation, which can lead failure cell. We report situ monitoring growth micro- nano-scale, using X-ray microdiffraction transmission microscopy (TXM)....
Over the past couple of years there has been a tremendous interest in flexible sensors for purpose activity tracking and health monitoring purposes. With helps novel designs, these devices can conform to curvature human body, which improve signal noise ratio, comfort user. To power such devices, battery should be flexible, retain its capacity after multiple flexing cycling. Batteries based on lithium ion chemistry are an ideal choice batteries due high energy density stable electrochemical...
Flexible electronics require flexible energy storage, and electrochemical batteries are currently the strongest option for such devices. We further our previous investigation, beginning to add quantitative analysis composite mechanical/electrochemical performance of printed electrodes. The presented work will explain principles microfluidic stress how it provides insight into operating conditions real microbatteries.