Engineering
Metal halide perovskites are a large class of crystalline materials with numerous advantageous features, including a high light absorption coefficient, high charge mobility and strong photoluminescence. Due to their unique ...
Energy & Green Tech
A combined team of researchers from the U.S. Advanced Battery Consortium (USABC) and battery maker A123 Systems has developed a new way to reclaim some of the materials from the cathodes that are used in lithium batteries, ...
Engineering
When mechanical and aerospace engineering professor Afsaneh Rabiei began developing composite metal foam, she looked to transform the transportation and military industries. Twenty years later, her product has the potential ...
Nov 4, 2021
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176
Energy & Green Tech
While only a mere 0.04 percent of the atmosphere, carbon dioxide plays a vital role in sustaining life on our planet. However, if this delicate balance is disrupted, excess carbon dioxide can pose a formidable threat to our ...
Nov 4, 2021
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25
Energy & Green Tech
What do apple cores, spent grain, and walnut shells have in common? They could one day be used to power a data center.
Oct 29, 2021
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33
Engineering
A team of materials scientists and chemists has determined the proper stack pressure that lithium metal batteries, or LMBs, need to be subjected to during battery operation in order to produce optimal performance.
Oct 18, 2021
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348
Energy & Green Tech
Known by expectant parents as the technology that enables them to see their child for the first time, ultrasound can be used at extremely low frequencies to serve an entirely different purpose. Researchers at KTH Royal Institute ...
Oct 13, 2021
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296
Energy & Green Tech
When lithium ions are forced rapidly through a battery, they might get stuck and turn into lithium metal, no longer able to move through the battery.
Oct 7, 2021
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16
Energy & Green Tech
A highly anticipated capability with the potential to repair hydroelectric dam turbines without the melting associated with traditional repair methods has made its way to the Pacific Northwest National Laboratory (PNNL) for ...
Oct 7, 2021
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5
Electronics & Semiconductors
When fabricating electronic devices based on conventional semiconducting materials, engineers need to complete a crucial step known as doping. Doping essentially entails the introduction of impurities into semiconductors ...
In chemistry, a metal (Greek: Metallo, Μέταλλο) is an element, compound, or alloy characterized by high electrical conductivity. In a metal, atoms readily lose electrons to form positive ions (cations); those ions are surrounded by delocalized electrons, which are responsible for the conductivity. The thus produced solid is held by electrostatic interactions between the ions and the electron cloud, which are called metallic bonds.
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