Sodium-Ion Battery

Sodium-Ion Batteries are used as a backup power source for electricity microgrids, used in laptops, LED flashlights. These cells can be totally drained (to zero charges) without harmful the active materials. They can be stored and shipped securely, Lithium-ion batteries must maintain about 30% of charge during storage, enough that they could short-circuit and catch fire during shipment.

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Detailed Description for Sodium-Ion Battery

 ·         Sodium-ion batteries (SIB) are a kind of rechargeable metal-ion battery that uses sodium ions as charge carriers. Sodium is available and abundant, making up over 2.6 percent of the Earth's crust. Battery-grade salts of sodium are cheap and rich, much more so than those of lithium.



·         These cells can be fully drained (to zero charge) without damaging the active materials. They can be warehoused and shipped safely. Lithium ion batteries must preserve about 30% of charge during storing, enough that they could short-circuit and catch fire during shipment. Sodium ion cells have been conveyed with a voltage of 3.6 volts, able to maintain 115 Ah/kg after 50 cycles, connecting to a cathode-specific energy of roughly 400 wh/kg Inferior cycling performance limits the ability of non-aqueous Na-ion batteries to contest with commercial Li-ion cells.

·         SIBs store energy in chemical links of the anode. Charging the battery forces Na+ ions to de-intercalate from the cathode and travel towards the anode. Charge balancing electrons pass from the cathode through the external circuit comprising the charger and into the anode. During discharge the process reverses. Once a circuit is finished electrons pass back from the anode to the cathode and the Na+ ions travel back to the cathode.


Sodium-ion (Na-ion) technology is comparable to lithium-ion (Li-ion) technology and the following points highlight the important similarities and differences:


·         Na-ion materials have lower material costs than Li-ion materials (e.g. sodium carbonate is < 10 % of the cost of the equivalent lithium salt). Additionally, cathode and electrolyte costs can be ~ 50 % of cell costs, so the general cost reduction is substantial.

·         Na is far more abundant in the earth’s crust than Li (Na ~ 2.6 % vs. Li ~ 0.005 %) making this technology

·         Drop-in solution.

·         Na-ion materials can be handled in the similar way as Li-ion materials at each step, from the combination of the active materials to the electrode processing. This will permit current Li-ion battery manufacturers to use remaining equipment to construct batteries by means of Farad ion’s novel materials.

·         Existing Li-ion manufacturing lines can be used to make Na-ion batteries.






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