Passive Components Blog
No Result
View All Result
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Circuit Protection Devices
    • electro-mechanical news
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • inter-connect news
    • Market & Supply Chain
    • Market Insights
    • Medical
    • Modelling and Simulation
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors News
    • Resistors
    • RF & Microwave
    • Telecommunication
    • Weekly Digest

    TDK Increases Current Ratings of Automotive Thin-Film Power Inductors

    Sumida Announces New DC Common Mode Choke Coil Series

    KYOCERA AVX Releases New 3dB Hybrid Couplers

    SCHURTER Unveils High Voltage Fuses for EV Applications

    YAGEO Releases First to Market 750V Aluminum Capacitors

    binder Introduces M9 Compact Circular Connector

    Smolteks CNF-MIM Capacitors Meet Thermal and Voltage Stability Industry Requirements

    Wk 26 Electronics Supply Chain Digest

    Learn How Supercapacitors Enhance Power System in Knowles eBook

    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
    • Circuit Protection Video
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Inter-Connect Video
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos

    Accelerating Full Bridge LLC Resonant Converter Design with Frenetic AI

    Understanding Switched Capacitor Converters

    Coupled Inductors Circuit Model and Examples of its Applications

    Inductor Resonances and its Impact to EMI

    Highly Reliable Flex Rigid PCBs, Würth Elektronik Webinar

    Causes of Oscillations in Flyback Converters

    How to design a 60W Flyback Transformer

    Modeling and Simulation of Leakage Inductance

    Power Inductor Considerations for AI High Power Computing – Vishay Video

    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
    • Who is Who
  • Events
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Circuit Protection Devices
    • electro-mechanical news
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • inter-connect news
    • Market & Supply Chain
    • Market Insights
    • Medical
    • Modelling and Simulation
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors News
    • Resistors
    • RF & Microwave
    • Telecommunication
    • Weekly Digest

    TDK Increases Current Ratings of Automotive Thin-Film Power Inductors

    Sumida Announces New DC Common Mode Choke Coil Series

    KYOCERA AVX Releases New 3dB Hybrid Couplers

    SCHURTER Unveils High Voltage Fuses for EV Applications

    YAGEO Releases First to Market 750V Aluminum Capacitors

    binder Introduces M9 Compact Circular Connector

    Smolteks CNF-MIM Capacitors Meet Thermal and Voltage Stability Industry Requirements

    Wk 26 Electronics Supply Chain Digest

    Learn How Supercapacitors Enhance Power System in Knowles eBook

    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
    • Circuit Protection Video
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Inter-Connect Video
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos

    Accelerating Full Bridge LLC Resonant Converter Design with Frenetic AI

    Understanding Switched Capacitor Converters

    Coupled Inductors Circuit Model and Examples of its Applications

    Inductor Resonances and its Impact to EMI

    Highly Reliable Flex Rigid PCBs, Würth Elektronik Webinar

    Causes of Oscillations in Flyback Converters

    How to design a 60W Flyback Transformer

    Modeling and Simulation of Leakage Inductance

    Power Inductor Considerations for AI High Power Computing – Vishay Video

    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
    • Who is Who
  • Events
No Result
View All Result
Passive Components Blog
No Result
View All Result

Advances in EDLC Supercapacitor Carbon Electrodes

10.7.2019
Reading Time: 3 mins read
A A

Source: EDN article

by Maria Guerra. The EDN article introduces some of the latest developments that are paving the way for the commercial adoption of superconductors.Supercapacitors are distinguished by high charge and discharge rates and a higher energy storage capacity per unit mass or volume as compared to a battery. They can be charged and discharged very fast (within a few seconds to milliseconds) and several times (usually more than 100000 cycles) without significant capacitance loss.

RelatedPosts

TDK Increases Current Ratings of Automotive Thin-Film Power Inductors

Sumida Announces New DC Common Mode Choke Coil Series

KYOCERA AVX Releases New 3dB Hybrid Couplers

Therefore, where high power is required, a supercapacitor could be advantageous. For example, some power electronic designs currently include them successfully in short-term power applications where intermittent energy with variable power demands, and/or long cycling stability are required (e.g. voltage stabilization in start/stop systems, regenerative braking systems).

But supercapacitors can also offer great potential to enable power devices to run for longer without charging.

Here are some of the latest developments:

1. Carbon Nanowalls:

Scientists from Skoltech, Moscow State University (MSU) and Moscow Institute of Physics and Technology (MIPT) have proposed a new approach to replacing carbon atoms with Nitrogen atoms in the supercapacitor’s crystal lattice and developed a novel capacity enhancement method based on Carbon lattice modification with the aid of plasma.

The researchers performed the experiments using Carbon Nanowalls (CNWs) which are known for high specific surface area and can be used as active materials to produce electrochemical energy sources. The CNWs (Figure 1) were made of vertically oriented Graphene sheets, in which they replaced some of the Carbon with Nitrogen (Nitrogen is involved in redox reactions, which leads to an additional increase in capacity) using Carbon structure treatment by plasma. Their findings can help create the next generation of power sources for portable electronics.

Figure 1 SEM image of CNW film. Top right inset shows Raman spectra of raw CNWs and CNWs after plasma modification in DC glow-discharge. D, G and 2D bands are indicated. (Courtesy of Nature)

In the graphics (Figure 2) it is possible to observe the results of electrochemical studies performed in 1 M H2SO4 solution.

Figure 2 Cyclic voltammetry in 1 М H2SO4 electrolyte. (a) Electrochemical properties of CNWs before treatment, (b) NCNWs properties after plasma treatment, (c) and (d) cyclic voltammetry and cyclic stability of CNWs and NCNWs at scan rate of 20 mV s−1. (Courtesy of Nature)

Figure 2a shows cyclic voltammetry curves of CNWs for different scan rates. The same set of curves is presented for so-called NCNW samples. Specific capacitance was calculated as the area enclosed by the cyclic voltammetry curve, normalized by the potential range and the scan rate. A comparison of voltammetry curves is presented in Figure 2c. Results show that glow-discharge plasma modification leads to an improvement in specific electrochemical capacitance from 104 F g−1 to 464 F g−1. N-doped CNWs demonstrate insignificant changes in specific capacitance with cycle number Figure 2d.

 

2. Carbon NanoTubes:

Researchers from Michigan State University have provided a potential solution to create highly stretchable supercapacitors for powering wearable electronics. The team used Carbon nanotube forests (CNT forests) to create a supercapacitor that can be stretched to 800% of its original size for thousands of stretchings, relaxing cycles, making it suitable for clothing. The forest is approximately 10-30 micrometers high and after transferred and crumpled, the CNT forest forms impressive stretchable patterns, like a blanket (Figure 3). The 3D interconnected CNT forest has a larger surface area and can be easily modified with nanoparticles or adapted to other designs.

Figure 3 For emerging wearable tech to advance, it needs improved power sources. Now researchers from MSU have provided a potential solution via crumpled Carbon nanotube forests, or CNT forests. (Courtesy of Michigan State University)

“Instead of having a flat thin film strictly constrained during fabrication, our design enables the three-dimensionally interconnected CNT forest to maintain good electrical conductivity, making it much more efficient, reliable and robust” said Michigan State University soft machines and electronics laboratory director, Changyong Cao.
The potential use of this technology goes beyond smart watches that communicate with smartphones. In the future, these innovations could be integrated into biological tissues and organs to detect disease, monitor improvement and even communicate with medical practitioners.
Conclusions

In the last few years the application space for supercapacitors has steadily broadened into electric vehicles, energy harvesting, medical devices, wind energy systems, etc. But the widespread commercialization of supercapacitors demands greater efforts in the reduction of manufacturing costs. Expect more innovations and applications with new supercapacitor materials in the future; only the constant research and development of new materials and fabrication methods will help drive down production costs.

Related

Recent Posts

YAGEO Releases First to Market 750V Aluminum Capacitors

30.6.2025
20

Smolteks CNF-MIM Capacitors Meet Thermal and Voltage Stability Industry Requirements

30.6.2025
10

Learn How Supercapacitors Enhance Power System in Knowles eBook

30.6.2025
6

TDK Releases Industry First 1uF 100V X7R MLCCs in 1608 Case

27.6.2025
13

YAGEO Extends Lifetime of its Aluminum SMD Chip Capacitors to 5500hrs at 125C/Ur

27.6.2025
17

Murata Releases Worlds First 10µF/50V Automotive MLCC in 0805 Size

26.6.2025
44

Advancements and Applications of Switch Capacitor Power Converters

25.6.2025
30

Samsung Delivers Silicon Capacitors to Marwell AI Systems

24.6.2025
57

Smolteks CNF MIM Capacitor Break 1 µF/mm²

19.6.2025
39

Samsung Electro-Mechanics Releases 0201 X7T 1uF 6.3V MLCC for ADAS Applications

19.6.2025
23

Upcoming Events

Jul 23
13:00 - 14:00 CEST

PCB design for a Smartwatch

Jul 29
16:00 - 17:00 CEST

Impact of Elevated Voltage and Temperature on Molded Power Inductors in DC/DC converters

View Calendar

Popular Posts

  • Buck Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • Boost Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • Flyback Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • What is a Dielectric Constant and DF of Plastic Materials?

    4 shares
    Share 4 Tweet 0
  • LLC Resonant Converter Design and Calculation

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

    3 shares
    Share 3 Tweet 0
  • How to Design an Inductor

    0 shares
    Share 0 Tweet 0
  • Dual Active Bridge (DAB) Topology Explained

    0 shares
    Share 0 Tweet 0
  • SEPIC Converter Design and Calculation

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

    0 shares
    Share 0 Tweet 0

Newsletter Subscription

 

Passive Components Blog

© EPCI - Leading Passive Components Educational and Information Site

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

No Result
View All Result
  • Home
  • Knowledge Blog
  • Premium Suppliers

© EPCI - Leading 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.
Go to mobile version