Energy & Green Tech
To meet rising energy demands and power the countless electronic devices on the market, researchers will need to develop new advanced battery technologies. These technologies should ideally have higher energy densities and ...
Mar 8, 2023 feature
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Engineering
A new North Carolina State University study, performed in collaboration with battery testing researchers at the U.S. Department of Energy's Oak Ridge National Laboratory, shows that extremely short pulses from a high-powered ...
Feb 8, 2023
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158
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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Energy & Green Tech
To support the operation of the countless electronic devices that are being developed every day, researchers will need to develop increasingly advanced battery technologies. Lithium-ion batteries (LiBs), some of the most ...
Feb 1, 2023 feature
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Energy & Green Tech
A research group has demonstrated a high-energy lithium-ion (Li-ion) cathode, potentially paving the way for cost-effective, safe and high-capacity Li-ion batteries.
Jan 23, 2023
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Energy & Green Tech
Nickel-rich layered cathodes are promising candidates for the next-generation high-energy lithium-ion batteries because of their high energy density and competitive cost. However, with long-term operation, these cathodes ...
Jan 5, 2023
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2
Energy & Green Tech
Operational reliability, durability and high energy density: In these respects, solid-state batteries are superior in principle to conventional liquid electrolyte lithium-ion batteries. Some of the problems standing in the ...
Jan 3, 2023
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87
Engineering
From the moment you first use it, a new lithium-ion battery is degrading. After a few hundred charge cycles, you'll notice—your phone, laptop or electric car battery wears out more quickly. Eventually, it stops holding ...
Dec 22, 2022
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110
Engineering
Researchers at the Department of Energy's Oak Ridge National Laboratory have developed a new method for producing a key component of lithium-ion batteries. The result is a more affordable battery from a faster, less wasteful ...
Dec 5, 2022
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138
Energy & Green Tech
Chemists and engineers have been trying to create increasingly efficient, affordable and stable battery technologies to power a wide range of electronic devices. To do this, they have been leveraging the multi-redox reactions ...
Dec 1, 2022 feature
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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
