SYLLABUS SECTION: GS III (SCIENCE AND TECHNOLOGY)
WHY IN THE NEWS?
The University of Houston developed an electrolyte which makes it significantly more viable to produce sodium ion-based batteries commercially and on a larger scale.
SODIUM ION Batteries:
- Sodium-ion (Na-ion) batteries are solid-state batteries, and use solids instead of liquids to ferry ions through their core. It has three components:
- A negatively charged anode made up of hard carbons;
- A positively charged cathode constituting sodium-containing layered materials;
- Electrolyte that allows electrons to move.
- As compared to Lithium-ion battery, Sodium-ion battery
- Replaces the polymer separator used in lithium-ion batteries with a solid-state separator, which is more energy dense.
- Lowers charging time and improve life by eliminating the need to have lithium diffuse into the carbon particles as in conventional lithium-ion cells.
- Significance of Sodium ion-based batteries
- Natural abundance of sodium resources
- Greener and sustainable battery system
- Lesser cost of extracting than lower than lithium (least 20 percent)
- Contain non-flammable solid electrolytes that exhibit high safety.
- Issue with Li-ion battery
- High Environmental cost by way of mining,
- Needs a protective circuit to keep it running safely.
- Expensive with reserves localized only in certain parts of Chile, Australia, Argentina, and China.
- Extremely reactive
Read more: UPSC CURRENT AFFAIRS