Energy & Green Tech

An ultralow-concentration electrolyte for lithium-ion batteries

Lithium salts make batteries powerful but expensive. An ultralow-concentration electrolyte based on the lithium salt LiDFOB may be a more economical and more sustainable alternative. Cells using these electrolytes and conventional ...

Energy & Green Tech

How silicon can improve the performance of solid-state batteries

High-performance batteries are required for a wide range of applications, and demand for them is growing rapidly. This is why the research and development of electrochemical energy storage systems, including those for electromobility, ...

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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