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Researchers develop sodium-ion battery in 18650 format

https://chargedevs.com/newswire/researchers-develop-sodium-ion-battery-in-18650-format-2/

Jules Verne recognized the potential of sodium batteries in 1869 – they powered the futuristic submarine of Captain Nemo, who found their “electro-motor strength” to be twice that of zinc batteries.

Now scientists at the French research network RS2E have brought sodium batteries into the 21st century, producing the first sodium-ion battery in the industry-standard 18650 format (a cylindrical format used in consumer electronics and Tesla automobiles). Several other labs are also working on Na-ion batteries, but RS2E is the first to announce the development of an 18650 prototype.

Batterie sodium-ion (Na-ion) au format industriel standard « 18650 », posée sur un tas de sel (NaCl). Il s’agit de la première batterie au sodium mise au point dans ce format. Dans ce type de batterie, les ions sodium transitent d’une électrode à l’autre au fil des cycles de charge et de décharge. Elle représente une alternative aux batteries lithium-ion actuellement utilisées dans les ordinateurs portables ou encore les voitures électriques. Elle présente l’avantage d’utiliser un élément 1 000 fois plus abondant et aussi moins coûteux que le lithium : le sodium. Ses performances en densité d'énergie sont comparables à celles des premières batteries lithium-ion avec une marge de progression importante.  20150016_0006

Na-ion batteries could offer lower cost thanks to the abundance of sodium, and the prototype shows promising performance. The energy density of the new Na-ion cell is 90 Wh/kg, comparable with that of the first lithium-ion batteries. Its lifespan exceeds 2,000 charge/discharge cycles, and it is capable of charging and discharging rapidly.

The next step is to optimize and increase the reliability of the cell with a view to future commercialization.

“The first application, the most obvious, would be grid storage: storing renewable energy. We are talking about a market as big as the EV market,” said Jean-Marie Tarascon, a professor at the Collège de France and one of the heads of the RS2E network.

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