Energy & Green Tech
Can we survive three minutes without air or three days without water? How about without batteries? Imagine not having a battery for three hours.
Nov 2, 2022
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139
Energy & Green Tech
The number of newly registered electric vehicles (EVs) in Korea surpassed 100,000 units last year alone. Norway is the only other country to match such numbers. The core materials that determine the battery life and charging ...
Oct 6, 2022
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Energy & Green Tech
A bit of brushing may be the secret to making better rechargeable lithium batteries.
Aug 22, 2022
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Energy & Green Tech
Researchers at Boise State University have developed a new approach to making novel lithium-ion battery materials. Starting from an amorphous (i.e., a material lacking long-range order) niobium oxide, the team discovered ...
Aug 10, 2022
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72
Energy & Green Tech
Silicon is the second most abundant element on earth, making up a hefty 27.7% percent of the earth's crust. Apart from its ability to create sandy beaches and clear glasses, silicon also holds the potential to make highly ...
Aug 8, 2022
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Energy & Green Tech
A team of researchers from the Technion–Israel Institute of Technology has developed a proof-of-concept for a novel rechargeable silicon (Si) battery, as well as its design and architecture that enables Si to be reversibly ...
Jul 27, 2022
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Energy & Green Tech
Most energy storage systems (ESSs) have recently adopted lithium-ion batteries (LIBs), with the highest technology maturity among secondary batteries. However, these are argued to be unsuitable for ESSs, which store substantial ...
Jul 25, 2022
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Energy & Green Tech
Cheaper and far more abundant than lithium, sodium is increasingly appealing as a foundation for a next generation of high-voltage rechargeable batteries. Development of commercially viable sodium ion batteries lags significantly ...
Jun 28, 2022
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Energy & Green Tech
Among post-lithium-ion battery technologies, rechargeable magnesium (Mg) batteries utilizing divalent Mg2+ as charge carriers are expected to offer substantial improvements in volumetric energy density and sustainability ...
Jun 27, 2022
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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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An anode is an electrode through which electric current flows into a polarized electrical device. Mnemonic: ACID (Anode Current Into Device). Electrons flow in the opposite direction to the electric current (flow of hypothetical positive charge)
A widespread misconception[citation needed] is that anode polarity is always positive. This is often incorrectly inferred from the correct fact that in all electrochemical devices negatively charged anions move towards the anode (hence their name) and/or positively charged cations move away from it. In fact anode polarity depends on the device type, and sometimes even in which mode it operates, as per the above electric current direction-based universal definition. Consequently, as can be seen from the following examples, in a device which consumes power the anode is positive, and in a device which provides power the anode is negative:
An electrode through which current flows the other way (out of the device) is termed a cathode.
This text uses material from Wikipedia, licensed under CC BY-SA
