Researchers Achieved Record High Energy Density on-chip Capacitors

Posted by doEEEt Media Group
On August 5, 2024
0

Scientists at Lawrence Berkeley National Laboratory and UC Berkeley have created micro-capacitors with record-breaking energy and power densities using hafnium and zirconium oxide thin films. These capacitors achieve nine times higher energy density and 170 times higher power density than current technologies, enabling more efficient on-chip energy storage for advanced electronics. This breakthrough could revolutionize miniaturized devices like IoT sensors and AI processors.

EEE Components, PASSIVES

Electrolytic Capacitors

Posted by doEEEt Media Group
On May 12, 2023
0

The basic idea of electrolytic capacitor types is to maximize the surface area of electrodes and thus increase their capacitance value and capacitance density. Fine pores and cavities created on the electrode (anode) surface are then covered by a dielectric – usually insulator/semiconducting metal oxides. The electrolyte in a liquid/wet, gel or solid form is used as a medium to contact the high surface from the second side and bring it by its electrical conductivity mechanisms to the second electrode (cathode).

EEE Components, PASSIVES

Capacitance and its Calculation, Dielectric, Dipoles and Dielectric Absorption

Posted by doEEEt Media Group
On December 15, 2022
0

This article explains the basic key parameter of capacitors – capacitance – and its relations: dielectric material constant / permittivity, capacitance calculations, series and parallel connection, E tolerance fields, and how it is formed by dipoles / dielectric absorption.

EEE Components, PASSIVES

Film and Foil Organic Dielectric Capacitors

Posted by doEEEt Media Group
On September 5, 2022
0

Film capacitors are essential electrostatic capacitors suitable for medium, higher voltage, and higher current circuits. Unlike most other dielectric systems, film capacitors feature a low loss factors at very low temperatures.

EEE Components, PASSIVES

What Makes MLCC Dielectrics Different?

Posted by Kemet Electronic Corporation
On December 2, 2020
0

Kemet Webinar

Ceramic capacitors are usually described with a 3-character designation like X7R, X5R, and C0G, but what do those designations that mean? There’s a lot behind the scenes of this simple combination of letters and number when it comes to temperature.

In this webinar, KEMET’s Wilmer Companioni (Senior Technical Marketing Manager) takes you...

EEE Components, PASSIVES

Researchers Demonstrated Ultrahigh Energy Density Ceramic Capacitor

Posted by doEEEt Media Group
On August 24, 2020
0

Capacitors that rapidly store and release electric energy are key components in modern electronics and power systems. However, the most commonly used ones have low energy densities compared to other storage systems like batteries or fuel cells, which in turn cannot discharge and recharge rapidly without sustaining damage.

EEE Components, PASSIVES

Researchers Achieved Ultrahigh Capacitive Energy Density in Ion-Bombarded Relaxor Ferroelectric Dielectric Films

Posted by doEEEt Media Group
On August 5, 2020
0

Dielectric capacitors are vital components of electronics and power systems. The thin-film materials of which capacitors are composed are usually optimized by changing the material composition. However, Kim et al. found that postprocessing an already effective thin-film dielectric by high-energy ion bombardment further improved the material because of the introduction of specific types of defects that ultimately improved the energy storage performance. The results suggest that postprocessing may be important for developing the next generation of capacitors.

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Ceramic Capacitors Class 2

Posted by doEEEt Media Group
On July 18, 2020
0

Class 2 capacitors can be divided in: those with a moderate temperature dependence (X7R or 2C1) and others that only a fraction of the capacitance remains at the temperature limits (Z5U or 2F4).

EEE Components, PASSIVES

Ceramic Capacitors Class 1

Posted by doEEEt Media Group
On July 17, 2020
0

Capacitors with Class 1 ceramic are manufactured with temperature coefficients between +100 and –1500 ppm/°C. In tables and diagrams we will confine ourselves to the type that is called NP0 or COG (0 ± 30 ppm/°C)

EEE Components, PASSIVES

Researches Combine Principles of Battery and Capacitors in Novel Solid State Battery

Posted by doEEEt Media Group
On May 27, 2020
0

These batteries can be used in extremely low-frequency communications and in devices such as blinking lights, electronic beepers, voltage-controlled oscillators, inverters, switching power supplies, digital converters and function generators, and eventually for technologies related to modern computers.

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