Dual metal ion battery approaches performance of supercapacitors

September 12, 2017 //By Nick Flaherty
Dual metal ion battery approaches performance of supercapacitors
Researchers in Spain have developed a miniature rechargeable battery that can provide energy levels comparable to supercapacitor and still be safe.

Raphael Trocoli and his colleagues at the IREC institute in Barcelona, Spain, developed a dual metal ion cell that uses LiMn2O4, zinc and an aqueous electrolyte. This provides a specific power density  similar to electrochemical supercapacitors around 3400 W/kg, compared to 100 Wh/kg for current lithium ion cells.

The design also has high levels of stability with a very limited degradation (99.94 % capacity retention per cycle) after 300 cycles. All these features, together with the intrinsic safe nature of the technology, will have a significant impact on miniature systems, say the team in a paper for the Applied Materials and Interfaces journal at  pubs.acs.org/doi/abs/10.1021/acsami.7b08883

www.irec.cat/en/

 


Vous êtes certain ?

Si vous désactivez les cookies, vous ne pouvez plus naviguer sur le site.

Vous allez être rediriger vers Google.