Summary
Researchers in South Korea have developed a new type of sodium-ion battery that combines the high energy density of batteries with the fast charging capability of supercapacitors. By using sodium, which is 1000 times more abundant than lithium, the battery offers a lower-cost, more scalable energy storage solution. In tests, it exceeded the energy density of commercial lithium-ion batteries while charging in mere seconds.
Opportunities for Entrepreneurs
- Rapid-charging consumer electronics: Develop smartphones, laptops, wireless earbuds and other devices that can be fully charged in under a minute, enabling new usage patterns and reducing battery anxiety for consumers.
- High-performance electric vehicles: Create electric cars, scooters, and bikes with batteries that can be recharged as fast as refueling a gas tank, removing a key barrier to EV adoption. The high power density also enables better acceleration.
- Grid energy storage: Build large-scale, low-cost battery arrays to store excess renewable energy and provide on-demand power to the grid. The sodium-ion chemistry makes this a more economical solution at scale compared to lithium-ion.
- Portable power devices: Offer compact, fast-charging power banks and generators for off-grid use, emergency backup power, and recreational activities like camping. Leverage the safety and stability of sodium-ion batteries.