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Science Magazine Podcast
Graphene’s journey from hype to prime time, and harvesting lithium from briny water
Oct 10, 2024
Mark Peplow, a seasoned science journalist, reflects on graphene's evolution from initial hype to vital real-world applications over the past 20 years. He discusses its potential in futuristic technologies like space elevators while addressing challenges in manufacturing and engineering. Meanwhile, Seth Darling, Chief Science and Technology Officer at Argonne National Laboratory, reveals innovative methods for extracting lithium from saltwater, highlighting sustainable approaches to meet the growing demand for clean energy.
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Quick takeaways
- Graphene has transitioned from initial hype to practical applications in technology, showcasing its gradual impact in various industries despite previous challenges.
- Innovative lithium extraction methods from brine, using sunlight and electrochemical cells, promise increased efficiency and sustainability crucial for rising demand.
Deep dives
The Evolution and Reality of Graphene
Graphene, discovered 20 years ago, has had a tumultuous path from being touted as a miraculous material to facing significant challenges in practical applications. Initially, its remarkable strength and conductivity sparked excitement about its potential in technologies like space elevators and advanced electronics. However, obstacles such as the difficulty in creating large-scale, defect-free graphene and the lack of an essential band gap for semiconductor applications have hindered its commercial viability. Despite this, graphene has found niche uses in anti-corrosion coatings and in electronics, demonstrating that while early hype may have led to disillusionment, it is now gradually making an impact in various industries.
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