Sodium-ion Battery / Na-ion Battery

The sodium-ion battery (NIB or SIB) is a type of rechargeable battery that uses sodium ions (Na⁺) as its charge carriers. Its working principle and cell construction in some case are similar to those of lithium-ion battery (LIB) types, but replace lithium with sodium. The largest advantage of sodium-ion batteries is the natural abundance of sodium, in contrast to the uneven geographic distribution, high environmental impact and high cost of many of the materials required for lithium-ion batteries such as lithium, cobalt, copper and nickel.

Na-ion batteries can use a number of different materials as electrodes. The most common combination is that of sodium transition metal oxides (cathode) and hard carbon (anode). Na-ion batteries typically use non-aqueous carbonate ester polar aprotic solvents (including ethylene carbonate, dimethyl carbonate, diethyl carbonate, and propylene carbonate) as an electrolyte, which extends the voltage range. The most widely used non-aqueous electrolyte uses sodium hexafluorophosphate as the salt dissolved in a mixture of these solvents. Additionally, electrolyte additives can improve performance metrics.

Sodium-ion batteries have several advantages over competing battery technologies. Compared to lithium-ion batteries, sodium-ion batteries have somewhat lower cost, slightly lower energy density, better safety characteristics, and similar power delivery characteristics.

CETC manufactures and supplies high-quality sodium-ion battery cells and packs for installers and customers all over the world. All the batteries are subject to stringent quality controls throughout every step of the manufacturing and through to their final dispatch.