• Latest
  • Trending
  • All
  • Capacitors
  • Resistors
  • Inductors
  • Filters
  • Fuses
  • Non-linear Passives
  • Applications
  • Integrated Passives
  • Oscillators
  • Passive Sensors
  • New Technologies
  • Aerospace & Defence
  • Automotive
  • Industrial
  • Market & Supply Chain
  • Medical
  • RF & Microwave
  • Telecommunication

Researchers Presented Ultramicro Graphene Supercapacitor Based on FET Transistor Technology

3.4.2023

Toray to Boost Polypropylene Film Production to Meet Rising Automotive Capacitor Demand

8.6.2023

Yageo Expects Passive Components Inventory Correction for at Least Two Next Quarters

8.6.2023

May 2023 ECIA NA Electronic Components Sales Sentiment below April Expectation

7.6.2023

Paumanok Issues Passive Components in Oil and Gas Electronics Market Outlook 2023-2028

5.6.2023

Researchers Study Aluminum Dissolution to Increase Supercapacitor Voltages, Suggest New Way of Al Thin Film Deposition

5.6.2023

Frenetic Offers Frenetic Zero One Month Free Magnetic Design Tool

5.6.2023
  • Home
  • Privacy Policy
  • EPCI Membership & Advertisement
  • About
No Result
View All Result
NEWSLETTER
Passive Components Blog
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Circuit Protection Devices
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • Market & Supply Chain
    • Medical
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors
    • Resistors
    • RF & Microwave
    • Telecommunication

    Toray to Boost Polypropylene Film Production to Meet Rising Automotive Capacitor Demand

    Yageo Expects Passive Components Inventory Correction for at Least Two Next Quarters

    May 2023 ECIA NA Electronic Components Sales Sentiment below April Expectation

    Paumanok Issues Passive Components in Oil and Gas Electronics Market Outlook 2023-2028

    Researchers Study Aluminum Dissolution to Increase Supercapacitor Voltages, Suggest New Way of Al Thin Film Deposition

    Frenetic Offers Frenetic Zero One Month Free Magnetic Design Tool

    Murata Releases 150C Automotive Crystals

    KAMIC Group Acquires Wound Components Specialist AGW Electronics

    4th PCNS Registration Opens !

    Trending Tags

    • Ripple Current
    • RF
    • Leakage Current
    • Tantalum vs Ceramic
    • Snubber
    • Low ESR
    • Feedthrough
    • Derating
    • Dielectric Constant
    • New Products
    • Market Reports
  • VideoFilter
    • All
    • Antenna videos
    • Capacitor videos
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos
    • Sensors

    Exploring Frenetic and Maxwell Options for an Optimal Transformer Performance in LLC Circuit

    Fast 25kW SiC EV Charger Design; OnSemi and Würth Elektronik Webinar

    PFC Inductor Magnetic Design Considerations; Frenetic Webinar

    Introduction to Capacitor Technologies; WE Webinar

    Self-Adjusting and Economical Switched Capacitor Balancer for Serially Connected Storage-Cells

    How to Design EMC Efficient Power Converter; WE Webinar

    Selecting Capacitors for High Power Buck-Booster Converters

    How to use Off-the-Shelf Transformers in Switching Power Supplies

    Simple Capacitors Pre-Charger Based on Unique ‘Floating Integrator’

    Trending Tags

    • Capacitors explained
    • Inductors explained
    • Resistors explained
    • Filters explained
    • Application Video Guidelines
    • EMC
    • New Products
    • Ripple Current
    • Simulation
    • Tantalum vs Ceramic
  • Knowledge Blog
  • Suppliers
    • Preferred Suppliers
    • Who is Who
  • Events
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Circuit Protection Devices
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • Market & Supply Chain
    • Medical
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors
    • Resistors
    • RF & Microwave
    • Telecommunication

    Toray to Boost Polypropylene Film Production to Meet Rising Automotive Capacitor Demand

    Yageo Expects Passive Components Inventory Correction for at Least Two Next Quarters

    May 2023 ECIA NA Electronic Components Sales Sentiment below April Expectation

    Paumanok Issues Passive Components in Oil and Gas Electronics Market Outlook 2023-2028

    Researchers Study Aluminum Dissolution to Increase Supercapacitor Voltages, Suggest New Way of Al Thin Film Deposition

    Frenetic Offers Frenetic Zero One Month Free Magnetic Design Tool

    Murata Releases 150C Automotive Crystals

    KAMIC Group Acquires Wound Components Specialist AGW Electronics

    4th PCNS Registration Opens !

    Trending Tags

    • Ripple Current
    • RF
    • Leakage Current
    • Tantalum vs Ceramic
    • Snubber
    • Low ESR
    • Feedthrough
    • Derating
    • Dielectric Constant
    • New Products
    • Market Reports
  • VideoFilter
    • All
    • Antenna videos
    • Capacitor videos
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos
    • Sensors

    Exploring Frenetic and Maxwell Options for an Optimal Transformer Performance in LLC Circuit

    Fast 25kW SiC EV Charger Design; OnSemi and Würth Elektronik Webinar

    PFC Inductor Magnetic Design Considerations; Frenetic Webinar

    Introduction to Capacitor Technologies; WE Webinar

    Self-Adjusting and Economical Switched Capacitor Balancer for Serially Connected Storage-Cells

    How to Design EMC Efficient Power Converter; WE Webinar

    Selecting Capacitors for High Power Buck-Booster Converters

    How to use Off-the-Shelf Transformers in Switching Power Supplies

    Simple Capacitors Pre-Charger Based on Unique ‘Floating Integrator’

    Trending Tags

    • Capacitors explained
    • Inductors explained
    • Resistors explained
    • Filters explained
    • Application Video Guidelines
    • EMC
    • New Products
    • Ripple Current
    • Simulation
    • Tantalum vs Ceramic
  • Knowledge Blog
  • Suppliers
    • Preferred Suppliers
    • Who is Who
  • Events
No Result
View All Result
Passive Components Blog
No Result
View All Result

Researchers Presented Ultramicro Graphene Supercapacitor Based on FET Transistor Technology

3.4.2023
Reading Time: 4 mins read
A A
72
VIEWS

Researchers at the Department of Instrumentation and Applied Physics (IAP), Indian Institute of Science (IISc), have designed a novel ultramicro graphene supercapacitor using gate field induced FET transistor technology, a tiny device capable of storing an enormous amount of electric charge.

It is also much smaller and more compact than existing supercapacitors and can potentially be used in many devices ranging from streetlights to consumer electronics, electric cars and medical devices.

RelatedPosts

Toray to Boost Polypropylene Film Production to Meet Rising Automotive Capacitor Demand

Yageo Expects Passive Components Inventory Correction for at Least Two Next Quarters

May 2023 ECIA NA Electronic Components Sales Sentiment below April Expectation

Most of these devices are currently powered by batteries. However, over time, these batteries lose their ability to store charge and therefore have a limited shelf-life. Capacitors, on the other hand, can store electric charge for much longer, by virtue of their design.

For example, a capacitor operating at 5 volts will continue to operate at the same voltage even after a decade. But unlike batteries, they cannot discharge energy constantly—to power a mobile phone, for example.

Supercapacitors, on the other hand, combine the best of both batteries and capacitors—they can store as well as release large amounts of energy, and are therefore highly sought-after for next-generation electronic devices.

In the current study, published in ACS Energy Letters, the researchers fabricated their supercapacitor using Field Effect Transistors or FETs as the charge collectors, instead of the metallic electrodes that are used in existing capacitors. “Using FET as an electrode for supercapacitors is something new for tuning charge in a capacitor,” says Abha Misra, Professor at IAP and corresponding author of the study.

Figure 1.: a) schematic representation of different stacked layers b) top view schematic of the supercapacitor device c) wire bonded supercapacitor device on PCB; source: IAP/ ACS Energy Letters

Current capacitors typically use metal oxide-based electrodes, but they are limited by poor electron mobility. Therefore, Misra and her team decided to build hybrid FETs consisting of alternating few-atoms-thick layers of molybdenum disulfide (MoS2) and graphene—to increase electron mobility—which are then connected to gold contacts. A solid gel electrolyte is used between the two FET electrodes to build a solid-state supercapacitor. The entire structure is built on a silicon dioxide/silicon base.

“The design is the critical part, because you are integrating two systems,” says Misra. The two systems are the two FET electrodes and the gel electrolyte, an ionic medium, which have different charge capacities. Vinod Panwar, Ph.D. student at IAP and one of the lead authors, adds that it was challenging to fabricate the device to get all the ideal characteristics of the transistor right. Since these supercapacitors are very small, they cannot be seen without a microscope, and the fabrication process requires high precision and hand-eye coordination.

Once the supercapacitor was fabricated, the researchers measured the electrochemical capacitance or charge-holding capacity of the device by applying various voltages. They found that under certain conditions, the capacitance increased by 3000%. By contrast, a capacitor containing just MoS2 without graphene showed only an 18% enhancement in capacitance under the same conditions.

In the future, the researchers are planning to explore if replacing MoS2 with other materials can increase the capacitance of their supercapacitor even more. They add that their supercapacitor is fully functional and can be deployed in energy-storage devices like electric car batteries or any miniaturized system by on-chip integration. They are also planning to apply for a patent on the supercapacitor.

Abstract

On-chip microscopic energy systems have revolutionized device design for miniaturized energy storage systems. Many atomically thin materials have provided a unique opportunity to develop highly efficient small-scale devices. We report an ultramicro-electrochemical capacitor with two-dimensional (2D) molybdenum disulphide (MoS2) and graphene-based electrodes. Due to the tunable density of states, 2D MoS2 provides electric field-induced doping and, combined with a graphene interface, leads to a high carrier mobility. The fabricated solid-state energy storage device is obtained using a gel electrolyte that provides an electrochemical capacitance of 1.8 mF/cm2. An extraordinary enhancement of ∼3000% in electrochemical capacitance (55 mF/cm2from 1.8 mF/cm2, measured from a cyclic voltammetry curve) is observed upon application of back-gate field of −25 V, which is more than the enhancement (18%) observed in a MoS2 electrochemical capacitor (0.95 mF/cm2 from 0.8 mF/cm2) without graphene, whereas the galvanic charge–discharge measurements analysis shows ∼1677% enhancement under the application of −25 V back-gate voltage. Thus, the electric field-induced doping in 2D MoS2, in addition to a high charge carrier mobility due to the graphene, plays a crucial role in an extraordinary large energy storage in the ultramicro-electrochemical capacitor. We also evaluated the capacitance response using an AC signal superimposed with the DC bias to investigate the influence of polarization potential on the electrolyte. The study provides a benchmark development of an ultramicro-electrochemical capacitor for ultrahigh charge storage capability.

Source: ACS Energy Letters

Related Posts

Capacitors

Toray to Boost Polypropylene Film Production to Meet Rising Automotive Capacitor Demand

8.6.2023
4
Market & Supply Chain

Yageo Expects Passive Components Inventory Correction for at Least Two Next Quarters

8.6.2023
12
Market & Supply Chain

May 2023 ECIA NA Electronic Components Sales Sentiment below April Expectation

7.6.2023
19

Upcoming Events

Jun 13
June 13 @ 12:00 - June 16 @ 14:00 EDT

Pre Cap Visual Inspection per Mil-Std-883 (TM 2017)

Jun 14
11:00 - 12:00 CEST

STRETCH.flex 2.0 Stretchable PCB Technology to the Limits

Jun 20
June 20 @ 12:00 - June 22 @ 14:00 EDT

Copper and Gold Wire Bonding

View Calendar

Popular Posts

  • What is a Dielectric Constant of Plastic Materials ?

    4 shares
    Share 4 Tweet 0
  • Capacitor Selection for Coupling and Decoupling Applications

    28 shares
    Share 28 Tweet 0
  • Ripple Current and its Effects on the Performance of Capacitors

    3 shares
    Share 3 Tweet 0
  • Leakage Current Characteristics of Capacitors

    0 shares
    Share 0 Tweet 0
  • Dielectric Constant and its Effects on the Properties of a Capacitor

    7 shares
    Share 7 Tweet 0
  • Why Low ESR Matters in Capacitor Design

    0 shares
    Share 0 Tweet 0
  • Understanding High-Precision Resistor Temperature Coefficient of Resistance

    0 shares
    Share 0 Tweet 0
  • Filter Poles and Zeros Explained

    0 shares
    Share 0 Tweet 0

Newsletter Subscription

 

PCNS Call for Papers !

Archive

2022
2021
2020
2019
2018
2017

Symposium

Passive Components Networking Symposium

Passives e-Learning

Knowledge Blog

  • Home
  • Privacy Policy
  • EPCI Membership & Advertisement
  • About

© EPCI - Premium Passive Components Educational and Information Site

No Result
View All Result
  • Home
  • News
  • Video
  • Knowledge Blog
  • Preferred Suppliers
  • Events

© EPCI - Premium Passive Components Educational and Information Site

This website uses cookies. By continuing to use this website you are giving consent to cookies being used. Visit our Privacy and Cookie Policy.