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Energy Stored in a Capacitor01:12

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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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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.
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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.
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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.
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A device consisting of two electrical conductors that are separated by a distance and used to store electrical charges is called a capacitor. The space between the conductors is either a vacuum or an insulating material, called a dielectric. Capacitors have many applications, ranging from filtering static from radio reception to energy storage in heart defibrillators.
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A spherical capacitor consists of two concentric conducting spherical shells of radii R1 (inner shell) and R2 (outer shell). The shells have  equal and opposite charges of +Q and −Q, respectively. For an isolated conducting spherical capacitor, the radius of the outer shell can be considered to be infinite.
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Stretchable MXenes for Supercapacitors: A Review.

Iftikhar Hussain1,2, Tensangmu Lama Tamang3, Mohammad Nahidul Islam4

  • 1Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong.

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Summary
This summary is machine-generated.

Stretchable energy storage using MXenes (2D transition metal carbides/nitrides) is crucial for advanced wearables. This review explores strategies for MXene composites in supercapacitors, addressing key challenges for commercialization.

Keywords:
MXeneelectronicsenergy storagestretchablesupercapacitors

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Area of Science:

  • Materials Science
  • Energy Storage
  • Nanotechnology

Background:

  • Wearable and implantable technologies require advanced energy storage solutions.
  • MXenes, 2D transition metal carbides/nitrides, offer high conductivity and tunable properties for energy devices.
  • Adapting MXenes for stretchable applications presents significant mechanical and electrochemical challenges.

Purpose of the Study:

  • To review emerging strategies for developing MXene-based stretchable composites for supercapacitors.
  • To highlight challenges and opportunities in transitioning MXene stretchable materials from lab to market.
  • To outline future directions for next-generation stretchable energy storage.

Main Methods:

  • Review of current literature on MXene-based stretchable composites.
  • Analysis of various design strategies for enhancing electrochemical and mechanical performance.
  • Examination of interfacial stability, scalability, and durability considerations.
  • Summary of the progression from laboratory-scale research to commercial product development.

Main Results:

  • Various design strategies are emerging for MXene-based stretchable supercapacitors.
  • Key challenges include maintaining interfacial stability, ensuring scalability, and achieving long-term durability under strain.
  • Progress is being made in translating these materials from lab-scale to commercial applications.

Conclusions:

  • MXene-based stretchable composites show significant promise for advanced energy storage.
  • Overcoming challenges in stability, scalability, and durability is essential for widespread adoption.
  • Further research is needed to realize next-generation stretchable energy storage for diverse technological applications.