• 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

Doped electrodes cram charge into supercapacitors

2.1.2016

Würth Elektronik Announces Virtual Conference Digital WE Days 2023

22.9.2023

Circuit Protection Selection Guide 

22.9.2023

WT Microelectronics to Acquire Future Electronics

20.9.2023

Circuit Protection Components 2023 Market Analysis

20.9.2023

Ink-Jet Printed Flexible Capacitors: Manufacturing and Ageing Tests

19.9.2023

4th PCNS Awards Passive Component Papers

19.9.2023
  • 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

    Circuit Protection Selection Guide 

    WT Microelectronics to Acquire Future Electronics

    Circuit Protection Components 2023 Market Analysis

    Ink-Jet Printed Flexible Capacitors: Manufacturing and Ageing Tests

    4th PCNS Awards Passive Component Papers

    Benefits of Ceramic Capacitors as Bootstrap Capacitors

    Vishay Boosts Power Inductor Manufacturing Capacity in Mexico

    SUMIDA to Build New Inductive Components Factory in Northern Vietnam

    Oscillators Integration, Selection Guide and Design In

    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

    Oscillators Integration, Selection Guide and Design In

    Input Capacitor Selection for Power Supplies – Part 3: Electrolytic Capacitors

    Input Capacitor Selection for Power Supplies Part 2 – Ceramic Capacitors

    Input Capacitor Selection for Power Supplies Video (Part 1)

    Vishay Webinar: Components Selection for Solar Panel Systems

    Capacitors Basics: Decoupling

    Totem Pole PFC Design for E-Mobility; Microchip and WE Video

    High frequency model of the physical inductor: The Cauer model

    High frequency model of the physical inductor: The basic lumped model

    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

    Circuit Protection Selection Guide 

    WT Microelectronics to Acquire Future Electronics

    Circuit Protection Components 2023 Market Analysis

    Ink-Jet Printed Flexible Capacitors: Manufacturing and Ageing Tests

    4th PCNS Awards Passive Component Papers

    Benefits of Ceramic Capacitors as Bootstrap Capacitors

    Vishay Boosts Power Inductor Manufacturing Capacity in Mexico

    SUMIDA to Build New Inductive Components Factory in Northern Vietnam

    Oscillators Integration, Selection Guide and Design In

    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

    Oscillators Integration, Selection Guide and Design In

    Input Capacitor Selection for Power Supplies – Part 3: Electrolytic Capacitors

    Input Capacitor Selection for Power Supplies Part 2 – Ceramic Capacitors

    Input Capacitor Selection for Power Supplies Video (Part 1)

    Vishay Webinar: Components Selection for Solar Panel Systems

    Capacitors Basics: Decoupling

    Totem Pole PFC Design for E-Mobility; Microchip and WE Video

    High frequency model of the physical inductor: The Cauer model

    High frequency model of the physical inductor: The basic lumped model

    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

Doped electrodes cram charge into supercapacitors

2.1.2016
Reading Time: 2 mins read
A A
1
VIEWS

source: Royal Society of Chemistry article

21 December 2015 Tim Wogan

RelatedPosts

Würth Elektronik Announces Virtual Conference Digital WE Days 2023

Circuit Protection Selection Guide 

WT Microelectronics to Acquire Future Electronics

A new supercapacitor electrode material has been created by Chinese researchers that can store much more energy than conventional supercapacitors. The material, which allows an electrode to store charge in two different ways, could make supercapacitors a viable alternative to batteries.

To produce their supercapacitor, Huang’s group deposited carbon onto self-assembled silica templates, which were etched away to reveal the highly conductive material © Science/AAAS

Supercapacitors have charge capacities many times higher than traditional capacitors, which store electric charge on two plates separated by a dielectric material. They fall into two broad categories: the first, called electrical double layer capacitors, use electrolytes containing solvated ions, which are attracted to, and form, layers around the electrodes, but do not actually exchange electrons with them. These usually use porous carbon electrodes as the surface area is crucial to maximising the capacitance, but even with surface areas as large as 2000–3000 m2/g , energy storage still falls far short of that of batteries.

An alternative design of supercapacitor is sometimes called an electrochemical capacitor or pseudocapacitor, and relies on redox reactions between the electrolyte and the solvent similar to those that occur in a battery. Unlike in a traditional battery, however, the reactions are highly reversible and confined to the surface of the electrode, which makes it possible to charge and discharge much more easily. Such capacitors have used various electrode materials such as conductive polymers, but these lack the cycling stability for commercial devices.

An elegant solution to these devices’ problems is to combine the two using nitrogen-doped porous carbon, as the carbon can provide electrical double layer capacitance and the nitrogen vacancy sites can reversibly incorporate protons. However, previous electrodes using ordered mesoporous carbon have proved too resistive to provide either high capacitance or high charge capacity.

Increasing capacity
Fuqiang Huang and colleagues at the Shanghai Institute of Ceramics in China have devised a new method to produce a nitrogen-doped, graphene-like structure, by forming a template comprising long tubes from a self-assembled silica template. They deposited carbon onto the template by chemical vapour deposition using methane and ammonia before etching the template away. The degree of nitrogen-doping could be carefully controlled by varying the proportions of the gases.  The resulting structure was highly conductive.  The researchers produced electrodes from this material by pressing powders of it into an inert graphene foam.

The researchers found that the new devices could store three times more charge than current supercapacitors. The researchers believe the devices could potentially compete with batteries, perhaps even lithium-ion ones, while still charging and discharging far faster. ‘Can you imagine?’ says Huang. ‘Our device can be 100% charged in seven seconds.’ The team is now working to develop its device towards industrial application, and has devised a more industrially compatible, template-free way to produce the active material.

Patrice Simon of the Paul Sabatier University in France describes the figures as ‘really good, even outstanding, compared to what we are used to observing’. He notes, however, that most commercial supercapacitors use organic electrolytes as they can be charged up to nearly 3V without electrolysis. ‘We know this material can only be used in aqueous electrolytes because nitrogen redox reactions are not effective in organic electrolytes,’ he says. However, he adds that, if similar energy densities can be achieved, aqueous electrolytes would be preferable as the organic electrolytes used, such as acetonitrile, are often highly toxic.

Related Posts

Capacitors

Ink-Jet Printed Flexible Capacitors: Manufacturing and Ageing Tests

19.9.2023
43
PCNS

4th PCNS Awards Passive Component Papers

19.9.2023
52
Capacitors

Benefits of Ceramic Capacitors as Bootstrap Capacitors

19.9.2023
42

Upcoming Events

Sep 26
September 26 @ 12:00 - September 28 @ 14:00 EDT

Microwave Packaging Technology

Sep 26
16:00 - 17:00 CEST

Connector Temperature Rise and Derating

Oct 3
October 3 @ 12:00 - October 5 @ 14:00 EDT

Design and Test of Non-Hermetic Microelectronic

View Calendar

Popular Posts

  • What is a Dielectric Constant of Plastic Materials ?

    4 shares
    Share 4 Tweet 0
  • Understanding High-Precision Resistor Temperature Coefficient of Resistance

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

    3 shares
    Share 3 Tweet 0
  • Capacitor Selection for Coupling and Decoupling Applications

    28 shares
    Share 28 Tweet 0
  • Why Low ESR Matters in Capacitor Design

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

    7 shares
    Share 7 Tweet 0
  • Non-Linear Resistors: Thermistors, Varistors, Memristors

    0 shares
    Share 0 Tweet 0
  • Inductors and RF Chokes Basics

    0 shares
    Share 0 Tweet 0

Newsletter Subscription

 

Archive

2023
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.