Are there any materials where ions are the charge carriers instead of electrons?

AI Thread Summary
Ionic conduction occurs in materials like electrolytes, where ions serve as charge carriers instead of electrons, typically resulting in lower conductivity compared to metals. Solid materials with ions as charge carriers are rare, but examples include zirconium oxide membranes in lambda sensors and sodium beta-alumina used in batteries. The resistance of ionic conductors at room temperature is generally higher than that of metallic conductors. When two wires, one with electron flow and the other with ion flow, are moved through a magnetic field, the currents can behave differently, potentially creating opposing loops. Overall, the discussion highlights the unique properties and applications of ionic conductors in various technologies.
Salvador
Messages
505
Reaction score
70
I was wondering , are there any materials , metal or others, that have ions as the charge carriers that form current instead of electrons as in most metals.?
and are the ohmic resistance in room temperature for example similar to materials were current is formed by electrons or is the resistance higher?Also if I can add , I would like to know , if I have two wires connected together , one is an oridnary wire with electrons forming current and the other wire has ions carrying current , now if i move both wires the same way through a magnetic field , would i have a single loop of current as in the current in one wire would go one way while the current in the ion wire would go the other way or would the currents both go the same way as would happen if both wires were made of ordinary copper?

thanks.
 
Physics news on Phys.org
Electrolytes conduct electricity using ions rather than electrons. The conductivity is typically lower than for metal.
 
Salvador said:
I was wondering , are there any materials , metal or others, that have ions as the charge carriers that form current instead of electrons as in most metals.?
and are the ohmic resistance in room temperature for example similar to materials were current is formed by electrons or is the resistance higher?


Also if I can add , I would like to know , if I have two wires connected together , one is an oridnary wire with electrons forming current and the other wire has ions carrying current , now if i move both wires the same way through a magnetic field , would i have a single loop of current as in the current in one wire would go one way while the current in the ion wire would go the other way or would the currents both go the same way as would happen if both wires were made of ordinary copper?

thanks.

Like Dale said, electrolytes conduct electricity via ions rather than electrons. In P-type semiconductors, positively charged 'holes' in the crystal lattice are the majority charge carriers rather than electrons. As far as I know, there are no solid materials where actual ions are the charge carriers. Whether or not that's even theoretically possible is kind of an interesting question, maybe someone on here will know more. You can look up the electrical characteristics of semiconductors, and as you can imagine they vary considerably depending on the material. P-types are very commonly used though, and you can find them in BJTs, FETs, etc.
 
Funestis said:
As far as I know, there are no solid materials where actual ions are the charge carriers. Whether or not that's even theoretically possible is kind of an interesting question, maybe someone on here will know more.
In fact, there are some examples: The lambda sensor in cars measures the oxygen concentration using a Zirconium oxide membrane which conducts oxygen ions at elevated temperatures. Another example are glass electrodes as used to measure the pH of solutions. There, hydrogen ions can move through the glass membrane. Another important material is sodium beta-alumina which is used in several high energy batteries. The sodium ion can move in the crystal lattice, here.
 
So I know that electrons are fundamental, there's no 'material' that makes them up, it's like talking about a colour itself rather than a car or a flower. Now protons and neutrons and quarks and whatever other stuff is there fundamentally, I want someone to kind of teach me these, I have a lot of questions that books might not give the answer in the way I understand. Thanks

Similar threads

Replies
4
Views
2K
Replies
4
Views
3K
Replies
36
Views
6K
Replies
20
Views
4K
Replies
10
Views
1K
Replies
9
Views
2K
Back
Top