Energy & Green Tech
It's always exciting to bring home a new smartphone that seems to do anything, but it can be all downhill from there. With every charge and discharge cycle, the device's battery capacity lowers a little bit more—eventually ...
Jan 23, 2017
1
12
Energy & Green Tech
Researchers in Korea have united to tackle the challenges in the commercialization of all-solid-state batteries. The work is published in the journal Energy Storage Materials.
Jul 30, 2024
0
10
Energy & Green Tech
The element lithium is used widely in batteries because it results in long-lasting, stable energy storage. However, it's a finite resource, so researchers are hard at work trying to identify alternate materials to use in ...
Jul 11, 2024
0
33
Energy & Green Tech
Researchers from Hunan University have designed a layered oxide cathode for rechargeable lithium-ion batteries that achieves fast-charging performance, long life, and high safety using only an ultra-low amount of cobalt. ...
Jul 2, 2024
0
5
Energy & Green Tech
In a study published in Advanced Materials, a research team led by Prof. Zhang Yunxia from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences has developed an integrated bulk and surface commodification ...
Jun 21, 2024
0
63
Electronics & Semiconductors
Organic solar cells (OSCs) are a key part of the global effort to end our reliance on fossil fuels. Over the past few decades, new advances in technology have led to steady improvements in their efficiency and affordability.
Jun 17, 2024
0
25
Electronics & Semiconductors
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
0
13
Engineering
Manufacturers of secondary battery cells (LG Energy Solution, Samsung SDI, and SK) have been insisting on very stringent purity specifications from suppliers of cathode materials to ensure a consistent quality output.
Apr 1, 2024
0
44
Energy & Green Tech
Thanks to the low cost of raw materials and long lifespan rendered by their stable structure, iron-based phosphate cathodes are regarded as one of the most promising cathodes for Na-ion batteries (NIBs).
Mar 29, 2024
0
41
Energy & Green Tech
According to research published in Small, a team led by Prof. Hu Linhua from Hefei Institutes of Physical Science (HFIPS), Chinese Academy of Science (CAS) found that the electrochemical properties of NH4V4O10 can be successfully ...
Jan 19, 2024
0
1
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
