https://korii.slate.fr/tech/batteries-lithium-ion-futur-temps-chargement-5-minutes-silicium-anodes-enevate

Express battery recharging is a crucial issue for the democratization of electric vehicles. | Patrik Stollarz / AFP 

The batteries of the future will be charged in 5 minutes flat

 Start-ups are already on the bridge and hope to invest in the automotive sector in the coming years. 

Spotted by Ophélie Surcouf on  Wired

4/1/2020 at 7:02 a.m.

While waiting for a revolutionary battery capable of combining green energy, fast and unlimited charging, which may never happen, scientists are working on improving lithium-ion batteries.

The capacity to store energy has already been improved by perfecting the chemical recipe for lithium-ion, but research is about to take up a new challenge:  fully charge a large battery in five minutes .

A compromise at any cost 

 The task is much more complex than it seems. Increasing the loading speed generally implies a lower storage capacity, and vice versa. 

 The storage capacity depends on the thickness of the anodes (usually graphite) which store the ions while the battery is charging, while the speed of charging is a function of the speed at which the ions travel through the anode. 

 However, who says thicker anode says longer journey, with a risk of molecular bottleneck at the entry which can destroy the performance of the battery.

 Many laboratories are therefore on the bridge to find the best compromise or to hack the anodes by modifying the materials. 

 The promise of silicon 

 Anna Tomaszewska, chemical engineer at Imperial College London, led  a study published in August 2019  in the journal eTransportation, presenting a review of research on fast-charging lithium-ion batteries. 

 One of the most promising avenues, she said, is adding silicone to the anode, so as to limit congestion. "Silicon is particularly popular with manufacturers because it also improves the energy capacity of the battery,"  Tomaszewska told Wired . 

 Tesla has already  changed the composition of its batteries  to introduce this element and glean a little more storage for energy. 

 Enevate , a Californian company specializing in energy, is developing a model with anodes made entirely of silicon. Its results are encouraging: the company would have managed  to charge its batteries to 75% in 5 minutes . 

From lab to marketing

Now remains to invest the market. According to Wired, Enevate is in talks with electric car manufacturers to integrate their technology into commercial batteries by 2024.

 Other start-ups, such as  StoreDot  in Israel or  Echion Technologies  in the United Kingdom, are also launched in the race. 

 These fine advances are unfortunately to be put into perspective: discoveries and simulations in terms of batteries are known to never succeed in leaving the laboratories.

 Also, if the battery that charges in five minutes looms well on the horizon, it should take at least five years to arrive. 

 3 foreign start-ups

https://www.enevate.com/ US private company            

            https://www.enevate.com/news/  Try to develop the products that Hpqsilicon will offer in

                                                              test phase with manufacturers of Li-ion batteries

 https://www.store-dot.com/ Private company in Israel, one of the products of which is the"Flash Charging"            

  https://echiontech.com/ UKprivate companyBusiness plan similar to that of Hpqsilicon                  

The emerging company of Quebec

 https://hpqsilicon.com/ https://agoracom.com/ir/HPQ-SiliconResources             

·       The silicon in the batteries allows rapid recharging and greater mileage autonomy;

·       HPQ Only positioned to become one of the leading commercial suppliers of Silicon for batteries, 

·       HPQ is already in discussions with battery manufacturers to provide them with material samples;

·       Listed on the TSX.V in Canadian $ HPQ.V;

·       Access to all international markets; 

https://hpqsilicon.com/investor-relations/ Bernard J. Tourillon CEO

 Phone: (514) 846-3271                                                  

 Email:                                                       info@hpqsilicon.com

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