Electric vehicles are usually safer for their occupants—but not necessarily for everyone else, says researcher
The future of automobiles is electric, but many people worry about the safety of today's electric vehicles.
May 1, 2024
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The future of automobiles is electric, but many people worry about the safety of today's electric vehicles.
May 1, 2024
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In an advance for energy-storage technologies, researchers have developed high ionic-conductivity solid-state electrolytes for sodium-ion batteries that dramatically enhance performance at room temperature. This development ...
Apr 30, 2024
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A green industrial future for Europe may depend on an element that is part of a household staple: table salt. Dr. John Abou-Rjeily, a researcher at Tiamat Energy in France, is using sodium to develop rechargeable batteries. ...
Apr 25, 2024
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Researchers have developed a new manufacturing technique for "silicon/nitrogen-doped carbon composite anode materials." These materials aim to enhance the capacity and stability of lithium-ion battery anodes.
Apr 24, 2024
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Korea relies on imports for most of its metal resources, and in recent years, due to resource depletion and rising raw material prices, 'circular resources' that recycle waste metal resources have emerged. In response, SK ...
Apr 23, 2024
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Lithium-ion batteries (LIBs), mainly used as the power of computer, communication and consumer electronic products, require higher energy density, longer cycling life, faster-charging capability, and a broader operating temperature ...
Apr 18, 2024
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Nissan expects to mass produce electric vehicles powered by advanced next-generation batteries by early 2029, the company said Tuesday during a media tour of an unfinished pilot plant.
Apr 16, 2024
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Oxide ion conductors used in solid-state fuel cells often fail to reach full potential when operating at temperatures below 500 oC, but researchers from Tokyo Tech have recently found a solution to this problem. They demonstrated ...
Apr 10, 2024
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If you've looked in your utility drawer lately, you may have noticed the various shapes, sizes and types of batteries that power your electronic devices. First, there are the round, non-rechargeable button cells for your ...
Apr 8, 2024
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Lithium-ion batteries have become an integral part of everyday life. The number of used batteries is correspondingly high. They contain considerable amounts of important raw materials such as graphite. Recycling this mineral ...
Apr 8, 2024
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An ion is an atom or molecule where the total number of electrons is not equal to the total number of protons, giving it a net positive or negative electrical charge.
Since protons are positively charged and electrons are negatively charged, if there are more electrons than protons, the atom or molecule will be negatively charged. This is called an anion (pronounced /ˈænaɪən/; an-eye-on), from the Greek ἀνά (ana), meaning 'up'.
Conversely, if there are more protons than electrons, the atom or molecule will be positively charged. This is called a cation (pronounced /ˈkætaɪən/; cat-eye-on), from the Greek κατά (kata), meaning 'down'.
An ion consisting of a single atom is called a monatomic ion. If it consists of two or more atoms, it is called a polyatomic ion. Polyatomic ions containing oxygen, such as carbonate and sulfate, are called oxyanions.
When writing the chemical formula for an ion, its charge is written as a superscript '+' or '−' following a number indicating the difference between the number of protons and the number of electrons. The number is omitted if it is equal to 1. For example, the sodium cation is written as Na+, the '+' indicating that it has one less electron than it has protons. The sulfate anion is written as SO42−, the '2−' indicating that it has two more electrons than it has protons.
If an ion contains unpaired electrons, it is called a radical ion. Just like neutral radicals, radical ions are very reactive.
This text uses material from Wikipedia, licensed under CC BY-SA