Today's KNOWLEDGE Share:SODIUM-ION BATTERY INDUSTRY

Today's KNOWLEDGE Share:

SODIUM-ION BATTERY INDUSTRY

The working principle of a sodium-ion battery is similar to that of the lithium-ion battery following an intercalation-based “rocking chair” mechanism, whereby the embedding (intercalation) and stripping (deintercalation) process of sodium-ion between positive (cathode) and negative (anode) electrodes, which are parted by the separator soaked in electrolyte, realises charge and discharge.

In terms of product performance, sodium-ion batteries advantages include good safety, rate performance, and low temperature performance, but have the disadvantages of poor cycle life and its energy density is comparable to only that of conventional lithium iron phosphate batteries.

Due to the comparable energy density, excellent rate performance and significant cost advantage of sodium-ion batteries, they are considered cost-effective and will be applied to large-scale energy storage systems, two-wheeler electric vehicles and low-speed electric vehicles and are expected to complement and eventually replace lithium-ion batteries in the future. Large-scale energy storage systems mainly include wind power plants, solar power plants and household energy storage systems while low-speed electric vehicles mainly include logistics vehicles, agricultural vehicles, electric vehicles, electric buses and electric boats.

Source"Brendan Jephcott

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