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

    Advancements and Applications of Switch Capacitor Power Converters

    KYOCERA AVX Releases Robust Vertical-Mating Battery Connectors

    Accelerating Full Bridge LLC Resonant Converter Design with Frenetic AI

    Samsung Delivers Silicon Capacitors to Marwell AI Systems

    Stackpole Releases Low VCR High Voltage Chip Resistors

    June 2025 Interconnect, Passives and Electromechanical Components Market Insights

    Wk 25 Electronics Supply Chain Digest

    Smolteks CNF MIM Capacitor Break 1 µF/mm²

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

    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

    Advancements and Applications of Switch Capacitor Power Converters

    KYOCERA AVX Releases Robust Vertical-Mating Battery Connectors

    Accelerating Full Bridge LLC Resonant Converter Design with Frenetic AI

    Samsung Delivers Silicon Capacitors to Marwell AI Systems

    Stackpole Releases Low VCR High Voltage Chip Resistors

    June 2025 Interconnect, Passives and Electromechanical Components Market Insights

    Wk 25 Electronics Supply Chain Digest

    Smolteks CNF MIM Capacitor Break 1 µF/mm²

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

    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

Defect-engineered Graphene Improves Supercapacitors

30.8.2016
Reading Time: 2 mins read
A A

source: Energy Harvesting Journal news

Clemson University researchers controllably add nitrogen atoms to graphene to achieve higher energy efficiency of carbon supercapacitors

RelatedPosts

Advancements and Applications of Switch Capacitor Power Converters

KYOCERA AVX Releases Robust Vertical-Mating Battery Connectors

Accelerating Full Bridge LLC Resonant Converter Design with Frenetic AI

Making clean energy a large-scale reality entails the integration of renewable energy generation technologies such as solar cells with energy storage devices. This integration is necessary to mitigate the inherent fluctuations associated with photovoltaics. The output power from solar panels, installed on thousands of rooftops or aligned in a solar power plant, depends on the weather – sunny days will generate excess power while output may be significantly lower on cloudy days.

Energy storage devices such as batteries and supercapacitors can be used as a buffer and smooth out the fluctuations by going online at an appropriate time when the solar panels are producing low power. Although some porous carbon supercapacitors are presently being used, they are not yet ready for large scale integration due to a fundamental challenge: the microscopic distribution of electrons in nanocarbons.

Traditionally, the size of electrode materials in supercapacitors is reduced to nanometers to enable high surface area and more room for storing more amounts of energy. But the microscopic electron distribution in nanocarbons limits the total amount of stored energy through a property called ‘quantum capacitance’. Although a lot of charge could be stored in the pores on nanocarbons due to their high surface area, their inherently low quantum capacitance reduces the net energy that could be drawn from supercapacitors. Contrary to the notion that ‘perfection equals best performance’, Clemson University researchers controllably added nitrogen atoms to graphene to achieve carbon supercapacitors ready for practical applications.

“Defects are often seen as performance limiters. But defects provide new possibilities to overcome otherwise insurmountable barriers,” says Dr. Ramakrishna Podila, Assistant Professor of Physics at Clemson who instigated the study. “All defects are not the same. The micro-environment of defect is critical to tune the properties. In other words, we need to find the perfect imperfection to achieve new properties.”

By doping graphene layers with nitrogen atoms, the team has produced graphene with three different flavors: graphitic, pyridinic, and pyrrolic. The latter two flavors (pyridinic and pyrrolic) add nitrogen atoms in the right configuration to change the microscopic distribution of electrons and thereby increase the quantum capacitance of graphene. Furthermore, they allow the electrolyte ions to access the otherwise closed gallery spaces between the layers in few-layer graphene.

“People often quote Feynman’s famous sentence ‘There is plenty of room at the bottom’; but here, we found plenty of room in the middle between the layers to store more energy,” says Podilla. “We have been engineering defects in nanocarbons to go beyond what the traditional materials can offer. We found that the problems of quantum capacitance can be alleviated when nitrogen atoms are inserted into the graphene lattice at precisely the right positions. Indeed, we are able to extract as much energy as a Li-ion thin-film battery but with two orders of magnitude higher power.”

We are excited with the new developments. We wish to now test doped graphene cells for energy harvesting applications,” hopes Jingyi Zhu, a PhD candidate from Clemson Nanomaterials Center and a co-author on this Advanced Materials paper.

Source and top image: Clemson University

Related

Recent Posts

Advancements and Applications of Switch Capacitor Power Converters

25.6.2025
7

Samsung Delivers Silicon Capacitors to Marwell AI Systems

24.6.2025
10

Smolteks CNF MIM Capacitor Break 1 µF/mm²

19.6.2025
33

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

19.6.2025
16

Advanced Conversion Announces Mass Production of 200C Film Capacitors

18.6.2025
27

VinaTech Supercapacitors: Enhancing Smart Meter Reliability and Efficiency

17.6.2025
23

Chinas MLCC Makers Reach 10% Market Share

16.6.2025
84

Smoltek CNF-MIM Capacitor Commercialization Update

11.6.2025
33

Understanding Switched Capacitor Converters

9.6.2025
83

Exxelia to Present Smart Integrated Magnetics and MML Film Capacitors at SIAE25 

6.6.2025
37

Upcoming Events

Jul 23
13:00 - 14:00 CEST

PCB design for a Smartwatch

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