Energy & Green Tech
In recent years, lithium-based batteries have become widely used to power a wide range of electronic devices, including tablets, smart phones and portable computers. These batteries have different compartments, called cells, ...
Energy & Green Tech
Lithium-based batteries are used to power most existing electric vehicles, yet the amount of time they can keep a vehicle going before they need to be recharged is still somewhat limited. In the future, high-nickel layered ...
Energy & Green Tech
Lithium-rich transition metal oxide (Li1+XM1-XO2) cathodes have potential for use in Li-ion batteries, powering electronic devices and electric vehicles. These cathodes have a high energy density, typically above 900 Wh kg-1, ...
Energy & Green Tech
Researchers of Karlsruhe Institute of Technology (KIT) and cooperating institutions studied structural changes during the synthesis of cathode materials for future high-energy lithium-ion batteries and obtained new major ...
Dec 10, 2019
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Engineering
Scientists from Peter the Great St.Petersburg Polytechnic University (SPbPU) are developing a technology for printing the electrodes for miniature li-ion batteries using an inkjet printer. The ongoing research may help to ...
Nov 20, 2019
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Energy & Green Tech
A new concept for an aluminum battery has twice the energy density as previous versions, is made of abundant materials, and could lead to reduced production costs and environmental impact. The idea has potential for large-scale ...
Sep 30, 2019
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Energy & Green Tech
Elon Musk promised—and Jeff Dahn delivered. With the publishing of a ground-breaking paper in the Journal of The Electrochemical Society (JES), Dahn announced to the world that Tesla may soon have a battery that makes their ...
Sep 27, 2019
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Energy & Green Tech
Researchers around the globe have been on a quest for batteries that pack a punch but are smaller and lighter than today's versions, potentially enabling electric cars to travel further or portable electronics to run for ...
Mar 28, 2019
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Energy & Green Tech
Everyone wants smaller, cheaper, longer-lasting batteries. Find one that also has greater safety and stability, and you have the Holy Grail of better batteries.
Mar 11, 2019
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Energy & Green Tech
Researchers led by a University of California San Diego team have published work in the journal Nature Energy that explains what's causing the performance-reducing "voltage fade" that currently plagues a promising class of ...
Jul 16, 2018
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A cathode is an electrode through which electric current flows out of a polarized electrical device. Mnemonic: CCD (Cathode Current Departs).
Cathode polarity is not always negative. Although positively charged cations always move towards the cathode (hence their name) and/or negatively charged anions move away from it, cathode polarity depends on the device type, and can even vary according to the operating mode. In a device which consumes power, the cathode is negative, and in a device which provides power, the cathode is positive:
An electrode through which current flows the other way (into the device) is termed an anode.
This text uses material from Wikipedia, licensed under CC BY-SA
