Connect with us

Hi, what are you looking for?

CleanTechnica

Batteries

18650 Sodium-Ion Battery Developed At RS2E

Originally published on EV Obsession.

The first sodium-ion battery in an 18650 format was recently developed by researchers in the RS2E network (Réseau sur le stockage électrochimique de l’énergie) in France, according to recent reports.

na ion battery

© Vincent GUILLY/CEA

The new sodium-ion (Na-ion) battery prototype possesses an energy density of 90 Wh/kilogram — putting it on roughly equal ground with early lithium-ion batteries. The lifespan of the prototype is higher than 2,000 charge-discharge cycles, though, and sodium is cheaper than lithium of course.

image

© Vincent GUILLY/CEA

Also worth noting, is that the prototype possesses rapid charge and delivery rates.

The press release, emailed to EV Obsession, stated:

The first step was to find the ideal “recipe” for the positive electrode (cathode) of the battery. Six partner laboratories of the RS2E (see list below) were involved in the project with the goal to find the right composition for this sodium electrode. The development of a future prototype was then entrusted to CEA, a member of the RS2E network. In only six months, CEA was able to develop the first sodium-ion prototype in the “18650” format, that of the batteries found on the market, i.e. a cylinder 1.8cm in diameter and 6.5cm in height. This should facilitate technology transfer to existing production units. Other international laboratories also work on this technology, but none of them has yet announced the development of such a “18650” prototype.

This second stage made it possible to move from the laboratory scale (synthesis of several grams of cathode material) to the “pre-industrial” scale (synthesis of 1kg batches). It enabled the production of batteries with unmatched power performance levels. This new technology is already showing promising results. Its energy density (the quantity of electricity that can be stored by Kg of battery) amounts to 90Wh/kg, a figure already comparable with the first lithium-ion batteries. And its lifespan—the maximum number of charge/discharge cycles that a battery can withstand without any significant loss of performance—exceeds 2,000 cycles. But most of all, these cells are capable of charging and delivering their energy very rapidly. The main advantage of the technology is that it does away with lithium, a rare element only found in specific locations, contrary to sodium. Its other advantage is financial, as using sodium could make it possible to manufacture less expensive batteries.

The project has given rise to a number of CNRS and CEA academic publications and patents. It received financial support from the French Ministry of Higher Education and Research, the CNRS, CEA, the French National Research Agency (ANR) and the Ministry of Defence’s Armament Directorate (DGA), among others.

The researchers involved are now working to improve reliability, and pave the way to commercialization and, presumably, to a wide rollout where application of the technology makes sense. At this point, the exact circumstances where the technology will immediately make sense aren’t yet clear.

Image Credit: RS2E

 
Appreciate CleanTechnica’s originality and cleantech news coverage? Consider becoming a CleanTechnica Member, Supporter, Technician, or Ambassador — or a patron on Patreon.
 

Don't want to miss a cleantech story? Sign up for daily news updates from CleanTechnica on email. Or follow us on Google News!
 

Have a tip for CleanTechnica, want to advertise, or want to suggest a guest for our CleanTech Talk podcast? Contact us here.
Advertisement
 
Written By

James Ayre's background is predominantly in geopolitics and history, but he has an obsessive interest in pretty much everything. After an early life spent in the Imperial Free City of Dortmund, James followed the river Ruhr to Cofbuokheim, where he attended the University of Astnide. And where he also briefly considered entering the coal mining business. He currently writes for a living, on a broad variety of subjects, ranging from science, to politics, to military history, to renewable energy.

Comments

You May Also Like

Batteries

An advanced sodium-ion battery design overcomes technical hurdles

Batteries

Sodium-ion batteries may be the newest new thing.

Batteries

Scientists astounded by performance of sustainable batteries with far-reaching implications for electric vehicles and devices. Researchers at Bristol have developed high-performance sodium and potassium...

Batteries

The new CATL sodium battery that has several advantages over traditional lithium batteries.

Copyright © 2021 CleanTechnica. The content produced by this site is for entertainment purposes only. Opinions and comments published on this site may not be sanctioned by and do not necessarily represent the views of CleanTechnica, its owners, sponsors, affiliates, or subsidiaries.