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High Energy Density Capacitor

17.05.2024

Energy plays a key role in many aspects of modern life, and the ever-increasing demand for efficient and fast-charging power sources is driving innovation. Researchers at the McKelvey School of Engineering at Washington University in St. Louis have taken a significant step forward with a high-energy-density capacitor that promises to revolutionize the world of energy.

A team of scientists from the McKelvey School of Engineering at Washington University in St. Louis presented the results of their latest research on heterogeneous thin-film structures for capacitors. Researchers working with ferroelectrics inadvertently created a capacitor with an amazing energy density that is 19 times higher than that of conventional elements. This breakthrough opens up new prospects for the development of fast-charging batteries, which are so necessary in the modern world.

Capacitors play a key role in various devices, providing stable power and keeping electronics running smoothly. Our smartphones, laptops and other devices may contain hundreds of capacitors, and they are what provide fast and efficient charging power. However, batteries, although they store more energy, usually take longer to charge. Scientists sought to create a device that would combine high energy density with fast charging and durability, and their efforts were crowned with success.

Using heterostructures based on barium titanate (BaTiO3), researchers have discovered new properties that open up “new physics” in the field of capacitors. The combination of two-dimensional and three-dimensional materials in an Au/MoS2/BaTiO3/MoS2/Au heterostructure, including atomically thin layers of barium titanate, made it possible to create a capacitor capable of quickly discharging and charging with minimal energy loss. The energy storage density in the new structure has reached 191,7 J/cm3 with an efficiency of more than 90%, which opens up broad prospects for application in various fields.

A study conducted by scientists at Washington University in St. Louis confirms the significant potential of the new high-energy-density capacitor. This energy breakthrough could lead to the development of new, more efficient power sources that can meet the growing energy needs of modern society.

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Random news from the Archive

Camera for filming color video in absolute darkness 28.07.2023

Canon introduced the MS-500, equipped with a unique image sensor that is incredibly sensitive to even single photons. This innovative product was the first commercial device in the world with such functionality.

The MS-500 is capable of capturing high quality color video in total darkness using starlight as a backdrop. Thanks to the ability to use interchangeable telephoto lenses, it is able to record video with objects located at a considerable distance, even tens of kilometers.

Priced at $25, the MS-000 is equipped with Canon's exclusive SPAD image sensor, an array of single photon avalanche diodes. The first prototypes of SPAD sensors were presented by the company in 500, and then their mass production began. Each pixel of this sensor is able to respond to single photons at high speed, providing not only high sensitivity to low light, but also the ability to shoot at high speed, approaching the frozen state of the light beam.

However, the MS-500 avoids "freezing" the light. Instead, it is equipped with a 3,2-megapixel SPAD sensor measuring 13,2? 9,9mm lens that is capable of capturing color video in near-total darkness, such as as little as 0,001 lux, which is equivalent to starlight at night.

The MS-500's camera resolution surpasses the standard 1080p by adopting a new architecture. It is noted that it has an exceptional time resolution performance even among SPAD sensors, as well as low noise and sensitivity to the near infrared spectrum. This allows you to accurately determine the distance to the shooting object and its speed.

In addition to the camera, the use of Canon telephoto bayonet lenses expands shooting possibilities, allowing you to capture objects at considerable distances, up to "tens of kilometers". Although this feature is unlikely to be used in a domestic environment, the military and rescuers will probably be able to appreciate its practical value.

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