Why in the News?
Scientists from Bengaluru, in collaboration with Aligarh Muslim University, have developed an advanced material that significantly improves supercapacitor performance.
What are Supercapacitors?
- Fast-Charging Energy Devices: Supercapacitors are special tools that store and release energy very quickly, much faster than regular batteries.
- Used in Modern Technology: They are found in phones, electric vehicles, and solar systems where fast energy delivery is needed.
- Trade-Off in Storage: While they charge faster, they generally hold less energy than traditional batteries.
- Ongoing Scientific Efforts: Researchers are trying to increase energy capacity without sacrificing their quick-charging abilities.
About Lanthanum-Doped Silver Niobate:
- New Material from Indian Scientists: A research team from Bengaluru and Aligarh Muslim University created a better material for supercapacitors.
- Silver Niobate as Base: They used silver niobate, which is non-toxic and eco-friendly, as the base material.
- Improved by Lanthanum Doping: They added lanthanum, a rare metal, to help enhance electrical performance — a method called doping.
- Smaller Particles, Bigger Surface: The particles became smaller, increasing the surface area for energy storage.
What makes this material special?
- Better with Use: The material retained 118% of its capacity after repeated use, showing it improved over time.
- 100% Energy Efficiency: It wasted no energy during charge or discharge, making it highly efficient.
- Quick and Smooth Performance: It delivered energy faster and more steadily than previous materials.
- Proven in Real-World Test: A test device using this material could power an LCD screen, proving practical use.
- Eco-Friendly Choice: It is lead-free and safe for the environment.
- Future Potential: Scientists hope to apply this method to other materials and scale up for commercial use in electronics, EVs, and solar tech.
| [UPSC 2022] With reference to India, consider the following statements:
1. Monazite is a source of rare earths. 2. Monazite contains thorium. 3. Monazite occurs naturally in the entire Indian coastal sands in India. 4. In India, Government bodies only can process or export monazite. Which of the statements given above are correct ? Options: (a) 1, 2 and 3 only (b) 1, 2 and 4 only* (c) 3 and 4 only (d) 1, 2, 3 and 4 |
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