Is Graphene's Current Capacity Really x1000 Times Higher Than Copper?

  • Thread starter Thread starter PhiowPhi
  • Start date Start date
  • Tags Tags
    Capacity Current
AI Thread Summary
Graphene is often claimed to have a current-carrying capacity up to 1000 times greater than copper, but this assertion lacks substantial evidence. While graphene exhibits high carrier mobilities, reaching up to 200,000 cm^2/Vs at room temperature, its low carrier density limits its specific conductivity compared to metals like silver and copper. The ability of a thin graphene sheet to carry significant current depends on effective heat dissipation, complicating quantification. Overall, the dramatic claims about graphene's superiority in current capacity may be overstated. The discussion highlights the need for more realistic assessments of graphene's electrical properties.
PhiowPhi
Messages
203
Reaction score
8
Some articles would state that graphene(1 pure sheet) can carry x1000 the amount of current copper can. When I researched it, there isn't anything indicating so. Are those articles true? Or is it a lie?

I understand how graphene can be slightly better, but that is unrealistic... it is a wondrous material, yet that huge difference in current capacity and it's weight difference, it sounds too good to be true.
 
Engineering news on Phys.org
Carrier mobilities in graphene are exceptionally high, up to 200, 000 cm^2/Vs at room temperature. But the number of carriers is low, so the specific conductivity is not that different from metals like silver or copper.
A thin sheet can carry a lot of current when heat is lead away, there is no simple way of putting a number on that.
 

Thread 'How could I make it so ferrofluid drops do not coalesce?'

Hello! I've been brainstorming on how to prevent a lot of ferrofluid droplets that are in the same container. This is for an art idea that I have (I absolutely love it when science and art come together) where I want it to look like a murmuration of starlings. Here's a link of what they look like: How could I make this happen? The only way I can think of to achieve the desired effect is to have varying droplet sizes of ferrofluid suspended in a clear viscous liquid. Im hoping for the...
View full post »

Thread 'How do you fabricate microfluidic chips in your lab?'

Hello everyone! I am curious to learn how laboratories handle in-house chip manufacturing using soft lithography for microfluidics research. In the lab where I worked, only the mask for lithography was made by an external company, whereas the mold and chip fabrication were carried out by us. The process of making PDMS chips required around 30 min–1 h of manual work between prepolymer casting, punching/cutting, and plasma bonding. However, the total time required to make them was around 4...
View full post »

Similar threads

Weight difference of graphene vs copper?
Replies
1
Views
3K
3D Graphene foam from glucose by chemical blowing
Replies
5
Views
8K
Question about power capacity of electrical motors
Replies
13
Views
2K
Missing eddy currents in copper?
Replies
14
Views
3K
I Extremely strange consequence of the speed of heat value
Replies
19
Views
2K
Feasibility of nuclear detonation for deep planetary science on Mars
Replies
38
Views
5K
I understanding how skin effect works
Replies
11
Views
6K
Quantum Mech Homework Help Urgent: FCC, SC Lattice, Graphene Heat Capac
Replies
3
Views
6K
Cherenkov Radiation for lighting
Replies
1
Views
6K
I Hall effect in P-type semiconductors: electron-centric heuristic?
Replies
0
Views
2K

Hot Threads

Recent Insights

Back
Top