New dielectric capacitor

Question: The researchers have recently developed a new dielectric capacitor that stores Energy like a battery. It has been developed by researchers in the country-
(a) USA
(b) UK
(c) India
(d) China
Answer: (b)
Related facts:

  • The researchers have developed a new dielectric capacitor, a device that stores energy (like battery).
  • The study about this capacitor carried over by some researchers including those from Queen Mary institute of London in United Kingdom (UK).
  • The study was published in journal Nature Communications.

Base and Inspiration for the experiment:

  • The researchers found that by pressing and folding a polymer film capacitor, they were able to store 30 times more energy than best-performing commercially available dielectric capacitor.
  • The researchers took the inspiration for this new energy storage device from a French pastry called croissant which is made by folding multiple layers of dough.
  • The study noted that dielectric capacitors in general have ultrahigh power density which makes them suitable for energy accumulation.
  • In this way these capacitors are useful for technologies that require accumulating energy over a period of time and then releasing it very quickly like motor drives and even space vehicle power systems.
  • Until now, such capacitors had limitation of storing low amounts of energy but this new finding promise a significant impact on the field of pulse power applications.
  • Now this could produce a step-change in field of dielectric capacitors, which was so far limited by their low energy storage density.
  • As this is the highest energy density ever reported in a polymer film capacitor, so the advances in technology may pave a way for low-cost, efficient, and environmentally-friendly electric energy storage systems for wind as well as solar sources.
  • It should be known that storing of energy from renewable energy sources is very expensive, but with this technique, large amounts of renewable energy can be stored.

Links:
https://www.business-standard.com/article/pti-stories/researchers-develop-new-croissant-inspired-energy-storage-system-119101900295_1.html
https://www.indiatoday.in/education-today/latest-studies/story/researchers-developed-renewable-energy-storage-device-inspired-by-french-pastry-croissant-1610991-2019-10-19