Energy & Green Tech
Skoltech researchers have developed a novel material for lithium-ion batteries powering electric vehicles. With its ultrahigh energy density, the new cathode material promises longer driving ranges on one charge. Reported ...
Oct 18, 2022
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Energy & Green Tech
Li-ion batteries, rechargeable batteries based on lithium ions, are currently used to power a wide range of electronic devices, ranging from smartphones to portable computers, toys, wireless headphones, and electric vehicles. ...
Energy & Green Tech
Nitriles—an organic compound with a carbon atom triple-bonded to a nitrogen atom—are commonly added to the electrolyte formula for batteries using a lithium cobalt oxide cathode, making such batteries come much closer ...
Sep 26, 2022
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Energy & Green Tech
Researchers at the University of California, Irvine and four national laboratories have devised a way to make lithium-ion battery cathodes without using cobalt, a mineral plagued by price volatility and geopolitical complications.
Sep 21, 2022
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Energy & Green Tech
Researchers at the U.S. Department of Energy's (DOE) Argonne National Laboratory have a long history of breakthrough discoveries with lithium-ion batteries. Many of these discoveries have focused on a battery cathode known ...
Sep 8, 2022
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113
Automotive
Canada announced Tuesday tentative deals with Volkswagen and Mercedes-Benz that would see the two European automakers tap into burgeoning North American supply chains as they seek to challenge Tesla in the electric vehicle ...
Aug 23, 2022
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22
Energy & Green Tech
High-performance, micro-sized electrochemical energy storage devices are essential for future miniaturized electronic devices, such as smart medical implants, wireless sensors, and the Internet of Things. Microbatteries (MBs) ...
Jul 15, 2022
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72
Energy & Green Tech
The long-standing challenges to the practical implementation of rechargeable zinc-air batteries (ZABs) are the electrochemical irreversibility of the Zn anode and degradation of the air cathodes in alkaline electrolyte, which ...
Jun 20, 2022
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78
Energy & Green Tech
A team of researchers led by chemists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory has learned that an electrolyte additive allows stable high-voltage cycling of nickel-rich layered cathodes. Their ...
Jun 1, 2022
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1170
Energy & Green Tech
The research outcome of Korea Electrotechnology Research Institute (KERI) related to "low-cost and flexible high-energy-density lithium-sulfur batteries" was recently published on the front cover of the journal Small.
May 12, 2022
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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
