Energy & Green Tech
The key to developing an electric vehicle battery that can charge as quickly as it takes to fill a car with gasoline lies within its materials.
Jun 5, 2023
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17
Energy & Green Tech
Electrifying transportation is an essential step towards mitigating climate change. To improve the power, efficiency and safety of electric vehicles, researchers must continue to develop better batteries.
May 23, 2023
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50
Energy & Green Tech
A research group has developed a prototype calcium (Ca) metal rechargeable battery capable of 500 cycles of repeated charge-discharge—the benchmark for practical use.
May 23, 2023
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121
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
In the context of increasing energy demands and environmental concerns, renewable energy solutions are crucial for achieving net-zero emissions by 2050. Microbial electrochemical technologies, such as SMFCs, are cost-effective ...
May 12, 2023
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13
Energy & Green Tech
A team led by Prof. Song Li from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS) proposed the concept of intercalant-induced V t2g orbital occupation and developed an NH4+-intercalated ...
May 8, 2023
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319
Energy & Green Tech
Nickel-zinc (Ni-Zn) batteries are a promising technology due to their high output voltage, high theoretical specific energy, high safety and low cost. However, rechargeable alkaline Ni-Zn batteries are challenging, because ...
Apr 26, 2023
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287
Engineering
Energy engineers and material scientists are continuously trying to create safe battery technologies that exhibit higher energy densities and efficiencies, along with longer life cycles. As lithium-ion batteries (LiBs) are ...
Energy & Green Tech
A team led by Prof. Chen Wei, Prof. Jiang Hailong and Prof. Li Zhenyu from the University of Science and Technology of China (USTC) adopted NH2-functionalized metal-organic frameworks (MOFs) in lithium-chlorine (Li-Cl2) batteries ...
Apr 6, 2023
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4
Energy & Green Tech
Lithium-ion batteries are currently the gold standard in battery technology, but as the demand for safe and effective batteries increases, researchers are racing to find what's next.
Apr 6, 2023
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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
