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

    Smiths Interconnect Extends Space-Qualified, High-Reliability Fixed Chip Attenuators 

    Samtec Expands Offering of Slim, High-Density HD Array Connectors

    Bourns Unveils High-Precision Wirewound Resistor with Long-Term Stability

    Common Mode Chokes Selection for RF Circuits in Next-Generation Communication Systems

    Capacitor Self-balancing in a Flying-Capacitor Buck Converter

    Littelfuse Acquires Basler Electric Enhancing High-Growth Industrial Market

    DigiKey Grows Inventory with Over 31K New Stocking Parts in Q3 2025

    Murata Expands Automotive Metal Frame Y2/X1 Safety MLCC Capacitors to 500V

    Source: Semiconductor Intelligence

    October 25 Electronics Production: U.S. vs. Global Changes

    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

    Common Mode Chokes Selection for RF Circuits in Next-Generation Communication Systems

    Capacitor Self-balancing in a Flying-Capacitor Buck Converter

    How to Select Ferrite Bead for Filtering in Buck Boost Converter

    Power Inductors Future: Minimal Losses and Compact Designs

    Percolation Phenomenon: Degradation of Molded Power Inductors in DC/DC Converters

    Connector PCB Design Challenges

    Efficient Power Converters: Duty Cycle vs Conduction Losses

    Ripple Steering in Coupled Inductors: SEPIC Case

    SEPIC Converter with Coupled and Uncoupled Inductors

    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
  • PCNS
    • PCNS 2025
    • PCNS 2023
    • PCNS 2021
    • PCNS 2019
    • PCNS 2017
  • 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

    Smiths Interconnect Extends Space-Qualified, High-Reliability Fixed Chip Attenuators 

    Samtec Expands Offering of Slim, High-Density HD Array Connectors

    Bourns Unveils High-Precision Wirewound Resistor with Long-Term Stability

    Common Mode Chokes Selection for RF Circuits in Next-Generation Communication Systems

    Capacitor Self-balancing in a Flying-Capacitor Buck Converter

    Littelfuse Acquires Basler Electric Enhancing High-Growth Industrial Market

    DigiKey Grows Inventory with Over 31K New Stocking Parts in Q3 2025

    Murata Expands Automotive Metal Frame Y2/X1 Safety MLCC Capacitors to 500V

    Source: Semiconductor Intelligence

    October 25 Electronics Production: U.S. vs. Global Changes

    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

    Common Mode Chokes Selection for RF Circuits in Next-Generation Communication Systems

    Capacitor Self-balancing in a Flying-Capacitor Buck Converter

    How to Select Ferrite Bead for Filtering in Buck Boost Converter

    Power Inductors Future: Minimal Losses and Compact Designs

    Percolation Phenomenon: Degradation of Molded Power Inductors in DC/DC Converters

    Connector PCB Design Challenges

    Efficient Power Converters: Duty Cycle vs Conduction Losses

    Ripple Steering in Coupled Inductors: SEPIC Case

    SEPIC Converter with Coupled and Uncoupled Inductors

    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
  • PCNS
    • PCNS 2025
    • PCNS 2023
    • PCNS 2021
    • PCNS 2019
    • PCNS 2017
  • Events
No Result
View All Result
Passive Components Blog
No Result
View All Result

Polysulfates Could Boost Energy Density and Temperature Range of Film Capacitors

20.1.2023
Reading Time: 4 mins read
A A

A new type of polysulfate compound that can form thin, flexible films has properties that could make it a material of choice for many high-performance electrical components such as high temperature, high voltage film capacitors, according to a study from chemists and materials scientists at Scripps Research and the Lawrence Berkeley National Laboratory (LBNL).

In the study, published January 18 in Joule, the scientists found that the new polysulfates can be used to make polymer film capacitors that store and discharge high density of electrical energy while tolerating heat and electric fields beyond the limits of existing polymer film capacitors.

RelatedPosts

Smiths Interconnect Extends Space-Qualified, High-Reliability Fixed Chip Attenuators 

Samtec Expands Offering of Slim, High-Density HD Array Connectors

Bourns Unveils High-Precision Wirewound Resistor with Long-Term Stability

“Our findings suggest that energy-storing capacitors and other devices based on these new polysulfates could see wide application, including in electric vehicle power systems,” says study co-senior author Peng Wu, PhD, a professor in the Department of Molecular Medicine at Scripps Research.

The other co-senior authors were K. Barry Sharpless, PhD, W.M. Keck Professor of Chemistry at Scripps Research, and Yi Liu, PhD, Facility Director for Organic and Macromolecular Synthesis at LBNL’s Molecular Foundry, a multidisciplinary facility for the scientific and technical investigation of new materials.

Polysulfates with excellent thermal properties are casted into flexible free-standing films. High-temperature, high-voltage capacitors based on such films show state-of-the-art energy storage properties at 150 oC. Such power capacitors are promising for improving the energy efficiency and reliability of integrated power systems in demanding applications such as electrified transportation by mass and volume reductions. Credit: Scripps Research

The Sharpless and Wu labs recently synthesized many previously inaccessible polysulfates using the sulfur fluoride exchange (SuFEx) reaction, which was discovered in the Sharpless lab. SuFEx is part of a growing set of molecule-building methods known as click chemistry for their high efficiency and easy reaction requirements. Sharpless was awarded a share of the 2022 Nobel Prize in Chemistry for his pioneering work on click chemistry methods.

In investigations at Liu’s lab at LBNL’s Molecular Foundry, the researchers discovered that some of the new polysulfates have superior “dielectric” properties. Dielectric materials are electrical insulators in which positive and negative charges separate—storing energy, in effect—when the materials are exposed to electric fields. They are used in capacitors, transistors and other ubiquitous components of modern electronic circuits.

Many of the dielectric materials in contemporary use are lightweight, flexible, plastic-like materials called polymers. The new polysulfates also are polymers, but have greatly improved properties compared to commercial dielectric polymers. The team found that capacitors made from one of the new polysulfates, when enhanced with a thin film of aluminum oxide, could discharge a high density of energy, while withstanding electric fields (more than 700 million volts per meter) and temperatures (150 degrees C) that would destroy the most widely used polymer film capacitors.

The researchers noted that the heat sensitivity of standard polymer capacitors often necessitates expensive and cumbersome cooling measures in systems that use them—for example, in some electric car models. Thus, adoption of the new polysulfate dielectrics could lead to cheaper, simpler, more durable power systems in electric cars and many other applications, they say.

“I was very surprised at first, and still am—I think we all are. How can a classic force from the domain of physics, like the electric field force, be modulated by a thin chemical-polymer film in its path? The results speak for themselves though, and now seems a good time to share this puzzle,” says Sharpless.

The researchers continue to synthesize and investigate new polysulfates to find some that have even better properties.

“The polysulfate polymers we examined in this study can do very well at 150 degrees C, but we think we can find related polysulfates that can handle 200 to 250 degrees C with little or no loss of function,” Liu says.

“High performing polysulfate dielectrics for electrostatic energy storage under harsh conditions” was co-authored by He Li, Boyce Chang, Antoine Laine, Le Ma, Chongqing Yang, Junpyo Kwon, Steve Shelton, Liana Klivansky, Virginia Altoe, Adam Schwartzberg, Robert Ritchie, Ting Xu, Miquel Salmeron, Ricardo Ruiz, and Yi Liu, all of LBNL; Zongliang Xie, Tianlei Xu and Zongren Peng of Xi’an Jiaotong University; and by Hunseok Kim, Bing Gao, K. Barry Sharpless, and Peng Wu of Scripps Research.

The research was funded in part by the Department of Energy (DE-AC02-05CH11231,), the National Science Foundation (CHE-1610987), and the National Institutes of Health (R35GM1139643).

Related

Source: Scripps Research

Recent Posts

Samtec Expands Offering of Slim, High-Density HD Array Connectors

30.10.2025
1

Bourns Unveils High-Precision Wirewound Resistor with Long-Term Stability

30.10.2025
1

Capacitor Self-balancing in a Flying-Capacitor Buck Converter

30.10.2025
1

Murata Expands Automotive Metal Frame Y2/X1 Safety MLCC Capacitors to 500V

30.10.2025
3

Exxelia 4-Terminal Safety Capacitors Compliant with NF F 62-102 Railway Standard

27.10.2025
23

Samsung Releases Automotive Molded 2220 1kV C0G MLCC

23.10.2025
42

VINATech Offers Smallest 100µF Al-Hybrid Capacitor

23.10.2025
38

Vishay Unveils SMD 1200V PTC Thermistors in Compact Size

23.10.2025
10

Bourns Unveils Automotive 3 Watt Gate Driver Transformer

22.10.2025
9

Murata Opens EMC Test Lab in Nuremberg to Enhance Automotive Support

22.10.2025
15

Upcoming Events

Nov 4
10:00 - 11:00 PST

Design and Stability Analysis of GaN Power Amplifiers using Advanced Simulation Tools

Nov 4
November 4 @ 12:00 - November 6 @ 14:15 EST

Wirebond Materials, Processes, Reliability and Testing

Nov 6
14:30 - 16:00 CET

Self-healing polymer materials for the next generation of high-temperature power capacitors

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
  • 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
  • What is a Dielectric Constant and DF of Plastic Materials?

    4 shares
    Share 4 Tweet 0
  • MLCC and Ceramic Capacitors

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

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

    0 shares
    Share 0 Tweet 0
  • Flying Capacitors

    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
  • PCNS

© 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