Shenzhen Advanced Institute of Chinese Academy of Sciences successfully developed sodium dual-ion batteries

Recently, Tang Yongbing, a researcher at the Functional Thin Film Materials Research Center of the Institute of Advanced Technology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, and his research team have successfully developed a new high-performance, low-cost sodium-type dual-ion battery, which is expected to replace the existing lithium-ion technology and achieve industrialization
.

In recent years, the demand for lithium has grown rapidly
year by year with the wide application of lithium batteries.
However, the global reserves of lithium are very limited and unevenly distributed, resulting in rapid price increases in raw material prices, which seriously restricts the rapid development of
low-cost, high-performance energy storage devices in China.
Sodium has similar physical and chemical properties to lithium, and its reserves are abundant and inexpensive
.

Combining the comprehensive advantages of sodium-ion and dual-ion batteries, Tang Yongbing's research team has developed a new high-performance, low-cost tin-graphite dual-ion battery
based on sodium-ion electrolyte.
The new battery has an energy density that exceeds expectations, a long cycle life, and significantly reduces the production cost
of the battery.

The results show that the new sodium-ion two-ion battery still maintains 94% of its capacity after 400 cycles of charge and discharge at 2C rate.
And the energy density can reach 144Wh/kg, which is higher than the energy density
of existing traditional lithium-ion batteries.