Metal-Free Motor Windings – More Powerful, Lighter and Lower Carbon

From Transport Evolved.

🚀 Carbon Nanotubes in EV Motors: The Future of Electric Vehicles?

There’s a game-changing material coming to EV motors—one that’s been around for decades but was impossible to use for windings… until now. Carbon nanotubes are here, and they might just replace copper forever!

🔍 Why are carbon nanotubes better than copper?
✅ More conductive
✅ Lighter & stronger
✅ Made from abundant carbon (not scarce copper)
✅ Higher efficiency & thermal performance

📢 Who made this breakthrough?A groundbreaking study from the Korea Institute of Science and Technology (KIST) proves carbon nanotube windings could revolutionize EV motors—and Kate breaks the down how and this matters for the future of electric cars!

👉 See the full shownotes on our website: https://transportevolved.com

⏱️ Chapter Breakdown:

00:00 – Introduction
03:00 – Background
04:00 – How Motors Work
09:12 – Why is copper a problem?
11:12 – So what did they do and why?
11:42 – Who are KIST?
12:24 – What impacts do impurities have on carbon nanotubes?
14:08 – How does Dr Dae Yoon’s purification process work?
16:16 – How to carbon nanotubes compare to copper for conductivity?
19:59 – What about the weight impact?
22:14 – Carbon impacts and closing thoughts
23:07 – Thanks, and Goodbye!

🔗 Links:

https://www.kist.re.kr/eng/newscenter/latest-research-news.do?mode=view&articleNo=16356&article.offset=0&articleLimit=10 – KIST – Drive an Electric Motor Without Metal

https://pubs.rsc.org/en/content/articlehtml/2009/nr/b9nr00071b – What amount of metallic impurities in carbon nanotubes is small enough not to dominate their redox properties?

https://www.mdpi.com/1996-1073/16/9/3665 – Carbon Nanotubes as an Alternative to Copper Wires in Electrical Machines: A Review

https://ntrs.nasa.gov/api/citations/20170003881/downloads/20170003881.pdf – NASA/TM—2017-219480 1

https://pubs.rsc.org/en/content/articlelanding/2016/an/c6an00248j – Magnetic impurities in single-walled carbon nanotubes and graphene: a review

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🎙️ Credits:

Host & Script: Kate Walton-Elliott, Nikki Gordon-Bloomfield
Camera, Edit: Kate Walton-Elliott, Vi Horton
Color: Kate Walton-Elliott, Vi Horton
Art & Animation: Erin Carlie
Producer: Nikki Gordon-Bloomfield
Music: via Artlist.io
© Transport Evolved LLC, 2025

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