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Related Concept Videos

Energy Stored in Capacitors01:10

Energy Stored in Capacitors

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A parallel plate capacitor, when connected to a battery, develops a potential difference across its plates. This potential difference is key to the operation of the capacitor, as it determines how much electrical energy the capacitor can store.
By integrating the equation that relates voltage and current in a capacitor, one can derive an equation for the voltage across the capacitor at any given time. This equation is crucial in understanding and predicting the behavior of capacitors in...
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Energy Stored in a Capacitor01:12

Energy Stored in a Capacitor

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When an archer pulls the string in a bow, he saves the work done in the form of elastic potential energy. When he releases the string, the potential energy is released as kinetic energy of the arrow. A capacitor works on the same principle in which the work done is saved as electric potential energy. The potential energy (UC) could be calculated by measuring the work done (W) to charge the capacitor.
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Energy Stored in a Capacitor: Problem Solving01:26

Energy Stored in a Capacitor: Problem Solving

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In 1749, Benjamin Franklin coined the word battery for a series of capacitors connected to store energy. Capacitors store electric potential energy that can be released over a short time. This property means capacitors have a wide range of applications.
Capacitor-discharge ignition is a type of ignition system commonly found in small engines where the energy released from a capacitor ignites an induction coil that, in turn, fires the spark plug.
To calculate the energy stored in a capacitor of...
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Superplasticizers01:30

Superplasticizers

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Superplasticizers are advanced admixtures that enhance the workability of concrete by lowering the water content without compromising the strength of the material. These substances are highly effective water reducers, improving concrete flow, making it easier to work with, and enabling concrete to reach inaccessible areas or densely reinforced sections without mechanical vibration. The key components in superplasticizers are either sulfonated melamine or naphthalene formaldehyde condensates,...
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MOS Capacitor01:25

MOS Capacitor

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A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
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Capacitor With A Dielectric01:18

Capacitor With A Dielectric

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Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
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Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
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Structural Cement-Based Supercapacitors with Multifunctional Robustness for Energy Storage.

Qingyang Liu1, Fengjuan Wang2, Yu Zhang1

  • 1School of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao, 266590, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|October 14, 2025
PubMed
Summary
This summary is machine-generated.

A new carbon cement supercapacitor (CCS) offers robust and cost-effective energy storage. This breakthrough technology demonstrates high capacitance, durability, and stability for renewable energy applications.

Keywords:
CB‐hydrogel networkcarbon cement electrodeenergy storagestructural supercapacitor

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Renewable energy expansion requires efficient and affordable energy storage.
  • Current cement-based supercapacitors face limitations in capacity, strength, and stability.
  • Developing advanced materials is crucial for next-generation energy storage solutions.

Purpose of the Study:

  • To engineer a novel carbon cement supercapacitor (CCS) with enhanced electrochemical performance and mechanical robustness.
  • To address the limitations of existing cement-based supercapacitors for practical applications.

Main Methods:

  • Fabrication of a porous carbon cement (CC) electrode via thermomechanical consolidation at 90°C.
  • In situ polymerization to create a carbon black-hydrogel network within the CC electrode structure.
  • Integration with a high-connectivity conductive hydrogel electrolyte.

Main Results:

  • Achieved a leading areal capacitance of 1708 mF cm⁻².
  • Demonstrated over 83% capacitance retention after 10,000 cycles.
  • Exhibited high mechanical strength (>8 MPa) and 92.2% capacitance retention under extreme loading.
  • Maintained performance across a wide temperature range (-20 to 80°C) with minimal fluctuation (<9%).
  • The CCS device is incombustible and shows potential for revolutionizing energy storage systems.

Conclusions:

  • The developed CCS presents a significant advancement in energy storage technology.
  • Its exceptional performance and robustness make it a promising candidate for scalable and cost-effective renewable energy storage.
  • This material innovation could pave the way for more reliable and durable energy storage solutions.