The British "Nature Communications" magazine published a new research in materials science on the 11th. American scientists have used vapor deposition technology to transform the most familiar traditional sintered brick into a super capacitor and become a new energy storage unit-these " After being charged, the “smart brick†can store electrical energy like a battery and supply power to other devices at any time. This achievement is considered to be an important step in the field of multi-purpose value-added building materials.
For thousands of years, sintered bricks have been used as building materials and have few other uses. This kind of brick is made of clay, shale, coal gangue or fly ash as raw materials, and is made by molding and high-temperature roasting. It is used to build load-bearing and non-load-bearing walls, which is the most familiar red brick. Scientists are now aware that the walls and buildings made of bricks have taken up a lot of space, and if they can be used "one brick with two uses", it will greatly increase their utilization value.
This time, Julio Darcy, a researcher at Washington University in St. Louis and his colleagues, turned this red brick into a supercapacitor energy storage device. They used the porous structure of the brick and used vapor deposition technology to add a layer of conductive polymer called PEDOT to the whole brick, turning the brick into an energy storage electrode.
Because the red pigment of the brick itself-iron oxide (rust), it is very critical for inducing the polymerization reaction. The research team used a proof-of-concept device to prove that a brick can be used to directly charge a light-emitting diode (LED).
According to the calculations of the research team, the walls made of these energy storage bricks will be able to store large amounts of electricity. This work may bring inspiration for the development of multi-purpose value-added building materials with electricity storage functions.
Prior to this, the idea of ​​using building materials for power supply was mostly "powered floor tiles"—that is, special floor tiles were applied to traffic areas with a large amount of trampling. The floor tiles can store the collected energy in polymer lithium batteries for use Lighting of street lights, speakers, sidewalk alarms, signs, and advertising. The application prospects of wall building materials that can achieve the same function will undoubtedly be broader. (Reporter Zhang Mengran)
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