MENU

Fast charging sodium battery taps supercapacitor tech

Fast charging sodium battery taps supercapacitor tech

Technology News |
By Nick Flaherty



Researchers at KAIST in Korea have developed a sodium battery capable of fast charging.

The team at KAIST, led by Professor Jeung Ku Kang from the Department of Materials Science and Engineering, has developed a high-energy, high-power hybrid sodium-ion battery capable of rapid charging. 

The sodium battery integrates anode materials typically used in batteries with cathodes suitable for supercapacitors. This combination allows the device to achieve both high storage capacities and rapid charge-discharge rates. This positions it as a viable next-generation alternative to lithium-ion batteries say the researchers, with lower cost and less safety issues.

However, the development of a hybrid battery with high energy and high power density requires an improvement to the slow energy storage rate of battery-type anodes as well as the enhancement of the relatively low capacity of supercapacitor-type cathode materials. 

The team used two distinct metal-organic frameworks for the optimized synthesis of hybrid batteries. This approach led to the development of an anode material with improved kinetics through the inclusion of fine active materials in porous carbon derived from metal-organic frameworks.

A high-capacity cathode material was also synthesized, and the combination of the cathode and anode materials allowed for the development of a sodium-ion storage system optimizing the balance and minimizing the disparities in energy storage rates between the electrodes.

The assembled full cell with the newly developed anode and cathode forms a high-performance hybrid sodium-ion energy storage device. energy density of 247 Wh/kg and a power density of 34.7 kW/kg over 5000 cycles.

This device surpasses the energy density of commercial lithium-ion batteries and exhibits the characteristics of supercapacitors’ power density. It is expected to be suitable for rapid charging applications ranging from electric vehicles to smart electronic devices and aerospace technologies.

The team developed a fast-charging kit from multiple coin-type cells linked in series that acts as a power-source module to demonstrate the fast-rechargeable capability..

10.1016/j.ensm.2024.103368 

www.kaist.ac.kr

 

If you enjoyed this article, you will like the following ones: don't miss them by subscribing to :    eeNews on Google News

Share:

Linked Articles
10s