Energy & Green Tech
The development of intercalation-type Li-free transition-metal-based cathodes and Li-metal anode paired all-solid-state batteries appears a viable alternative to overcome the energy density limitations faced by current rechargeable ...
May 15, 2023
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8
Energy & Green Tech
Billions of dead lithium-ion batteries, including many from electric vehicles, are accumulating because there is no cost-effective process to revive them. Now, Princeton researchers have developed an inexpensive, sustainable ...
Feb 22, 2022
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15
Energy & Green Tech
To meet the growing demand of the electronics industry and support the widespread deployment of electric vehicles, researchers will need to develop increasingly advanced and highly performing battery technologies. A promising ...
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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4
Energy & Green Tech
Currently, most cathode materials used in batteries for electric vehicles are layered oxides composed of nickel for over 60% of the transition metals. Using nickel-rich layered oxide is advantageous in establishing the mileage ...
Feb 8, 2023
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3
Energy & Green Tech
University of Birmingham researchers have announced a new approach for recycling the highest value component of end-of-life electric car batteries, the battery cathode, that is less energy-intensive and uses less hazardous ...
Oct 20, 2023
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31
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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23
Energy & Green Tech
In a study published in Advanced Energy Materials, a research team led by Prof. Zhang Yunxia from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences developed a solid-phase sintering strategy to enable ...
Aug 31, 2023
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2
Energy & Green Tech
The first generation of lithium-ion batteries for electric vehicles has been a remarkable success story. Yet, the question arises: What changes to battery materials will spur further advances to extend driving range and lower ...
Jun 17, 2024
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41
Energy & Green Tech
Researchers in WMG and the Department of Physics at the University of Warwick have found that asymmetric stresses within electrodes used in certain wearable electronic devices provides an important clue as to how to improve ...
Aug 25, 2020
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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
