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

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SUMMARY

Graphene, specifically a pure sheet, is often claimed to carry up to 1000 times more current than copper; however, this assertion lacks substantial evidence. While graphene exhibits exceptionally high carrier mobilities, reaching up to 200,000 cm²/Vs at room temperature, its low carrier density results in specific conductivity levels comparable to metals like silver and copper. The discussion emphasizes that while graphene is a remarkable material, the exaggerated claims regarding its current-carrying capacity are misleading.

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PhiowPhi
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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.
 
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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.
 

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