Consumer & Gadgets
The number of incidents involving damaged electronic devices on board aircraft has increased in recent years. Most of these are caused by lithium-ion batteries, which are found in laptops and other portable electronic devices.
Dec 1, 2023
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Energy & Green Tech
Used lithium-ion batteries from cell phones, laptops and a growing number of electric vehicles are piling up, but options for recycling them remain limited primarily to burning or chemically dissolving shredded batteries. ...
Nov 30, 2023
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Energy & Green Tech
A research team, led by Dr. Hosun Shin from the Interdisciplinary Materials Measurement Institute at the Korea Research Institute of Standards and Science and Professor Jae Yong Song's team from the Department of Semiconductor ...
Nov 29, 2023
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2
Energy & Green Tech
In recent years, engineers and material scientists have been trying to create increasingly advanced battery technologies that are charged faster, last longer, and can store more energy. These batteries will ultimately play ...
Energy & Green Tech
An article by researchers at the Center for Development of Functional Materials (CDMF) in Brazil describes a successful strategy to mitigate charge capacity loss in vanadium redox flow batteries, which are used by electric ...
Nov 22, 2023
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37
Energy & Green Tech
Zinc—cheap, abundant, environmentally friendly—may be the answer to better batteries, but there's a major problem: Aqueous zinc ion batteries (AZIBs) cannot match lithium-ion batteries in terms of power output. To test ...
Nov 21, 2023
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Energy & Green Tech
Xanthan gum, derived from plants like cabbage and known for its carbohydrate content, serves as a natural protective barrier in cosmetics to retain their benefits on the skin. In a recent development, this remarkable substance ...
Nov 15, 2023
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Energy & Green Tech
The Energy Department is making a push to strengthen the U.S. battery supply chain, announcing up to $3.5 billion for companies that produce batteries and the critical minerals that go into them.
Nov 15, 2023
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Energy & Green Tech
A team of scientists at the U.S. Department of Energy's (DOE) Argonne National Laboratory discovered an intriguing cooperative behavior that occurs among complex mixtures of components in electrolytes in batteries. Electrolytes ...
Nov 14, 2023
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49
Engineering
Lithium-ion batteries (LIBs) are, by far, the most widely used type of rechargeable batteries, spanning numerous applications. These include consumer electronics, electric vehicles, renewable energy systems, and spacecraft.
Nov 13, 2023
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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
