Recharger sa voiture électrique en 5mn chrono pour 480 km d'autonomie : une prouesse de StoreDot (Israël) d'ici un an !
[:fr]Doron Myersdorf, CEO de la start-up israélienne StoreDot a fait une annonce fracassante lors de la “Think Next Conference” de Microsoft, à Tel Aviv le 5 mai dernier : il a révélé que StoreDot (dont Israël Science Info avait annoncé une levée de fonds de 42 M$) va commercialiser d’ici un an une technologie qui permettra aux utilisateurs de voitures électriques de recharger leur véhicule en 5 minutes ! Cette prouesse a été rendue possible grâce à au système NanoDot développé par StoreDot. Mais ça n’est pas tout. Doron Myersdorf a ajouté : « StoreDot va ouvrir un centre de R&D à Herzliya (Israël) qui comptera un laboratoire de chimie organique, une nouvelle ligne de production et un laboratoire de recharge ».
Doron Myersdorf, StoreDot CEO
lenergiedavancer.com. Pour l’édition 2016 du CES (Consumer Electronics Show 6-9 janv. 2016, Las Vegas), Storedot promet d’exposer un modèle de voiture électrique, équipée d’une batterie qui utiliserait aussi sa technologie NanoDot. La start-up a ainsi présenté cette année une autre batterie d’une puissance de 2000 mAh, qui n’a eu besoin que de 3 minutes pour être chargée.
La technologie NanoDot repose sur l’utilisation de cristaux, de 2 nanomètres de diamètre, contenant des chaînes d’acides aminés, qui vont permettre aux ions de circuler beaucoup plus rapidement entre l’anode et la cathode. Grâce à ce nouveau procédé, il devient dès lors possible de recharger une batterie en des temps inégalés jusqu’à présent.
A l’heure actuelle, le moyen le plus rapide pour charger une batterie de voiture électrique est d’utiliser une station de charge rapide. Dans les meilleurs cas, au moins 30 minutes restent cependant nécessaires pour que l’automobiliste récupère 80 % de l’autonomie de son véhicule. La technologie de Storedot pourrait donc révolutionner le marché automobile en proposant un temps de charge pour une voiture électrique équivalent à celui d’un plein de carburant d’un véhicule standard.
https://www.youtube.com/watch?v=RQTQMNojy3Q[:en]StoreDot technology is based on a unique methodology that has enabled the design, synthesis and tuning of materials to create proprietary organic compounds that dramatically improve the performance of a range of devices, including batteries, displays, sensors and digital memory. StoreDot’s core technology is based on chemically-synthesized organic molecules of non-biological origin. These innovative molecules demonstrate uniquely tunable optical and electrochemical properties, which allow for the emission of vivid saturated colors, and the enhanced performance of energy storage devices.
Competing technologies are predominantly based on metals, including heavy and toxic metals. By contrast, StoreDot’s organic compounds are non-toxic and environmentally safe. Moreover, they are readily available, manufactured at a fraction of the cost, and therefore superior to any other alternative.
By achieving a remarkably rapid charging rate that is 100 times faster than any other mobile device battery, StoreDot has enabled charging a smartphone in only 60 seconds. Adopting a new approach in engineering the new-generation FlashBattery, StoreDot has entirely redesigned the internal battery architecture. The EV FlashBattery comprises thousands of cells assembled and packed in a single battery module. When fully charged, the EV FlashBattery stores enough energy for a car to travel 300 miles (480 km) on a 5 minute charge.
Maximizing the benefits of Li-ion batteries
LiBs (Lithium-ion batteries) have been traditionally used for powering most portable devices and EVs. While exhibiting relatively slow charging and discharging capabilities, over time, these chemical processes reduce the LiB’s ability to retain energy. Yet, StoreDot has succeeded in isolating and maximizing the charge transfer rate, and has enhanced it to heighten the superior characteristics of FlashBattery.
LiBs contain inorganic compounds in the battery’s cathode, typically comprising metal oxides or polyanions which are continuously recharged by the insertion of lithium ions. This process limits ionic conductivity, thereby reducing the power density and shortening the battery’s life expectancy. Moreover, the electrolyte used in LiBs is highly volatile and flammable, posing a severe safety risk to consumers, critical especially in electric cars.
Doron Myersdorf, StoreDot CEO
Supercapacitors: alternative approach to energy storage
Allowing for fast charging and high-power density, while enabling high-load currents without overcharging, supercapacitors (SCs) also provide a highly safe process and a virtually unlimited shelf and cycle life. The down-side of SCs is that they store only a fraction of energy than that of a regular LiB, exhibiting a decline in discharging rates, and therefore an inability to provide a steady power supply which is essential in most applications. Moreover, SC technology requires high-cost materials per watt.
FlashBattery ground-breaking solution: hybrid architecture
Using a unique hybrid multifunction electrode (MFE), StoreDot’s FlashBattery combines two types of energy storage solutions, incorporating the high-power rapid-charging capability of an SC with the high-energy storage ability and low self-discharge rate of a LiB.
This optimized charging ability is achieved through an innovative electrode structure containing proprietary organic polymers with legacy lithium metal oxide (LiMO) components on the cathode end that trigger redox reactions. This solution causes ions to flow from a modified anode to a modified cathode at a speed that could not be attained through existing technologies. Together with a proprietary separator and electrolyte, this new architecture delivers a high current and low internal resistance, with enhanced energy density and a prolonged battery life.
While some battery manufacturers were able to improve only one of the following properties – either increased capacity, fast-charging or extended battery-life – StoreDot’s novel technology has optimized all 3 simultaneously, in addition to enhancing its safety.
Extended lifetime
StoreDot’s organic compounds and battery architecture provide 4 times more charge/discharge cycles compared to any existing battery, increasing the number of cycles from 500 to 2,000. Using compounds that are less likely to metalize during these cycles, FlashBattery eliminates the risk of an internal electrical short almost entirely, which significantly prolongs battery life expectancy.
Stable and safe
Specially designed for high-current charging, the FlashBattery contains, in addition to lithium, non-flammable organic compounds encased in a multi-layer safety-protection structure that prevents over-voltage and heating, and is therefore considerably safer than traditional LiBs. Containing proprietary electrolyte, an ecologically-friendly material, the FlashBattery meshes polymers and metal oxide together, resulting in an increased electrode stability and SEI performance at high temperatures.
Organic compounds
Comprising carefully engineered organic molecules with high chemical-stability, FlashBattery compounds can be tuned to match a variety of applications. The FlashBattery demonstrates rapid redox activity, and optimized compounds that increase the absorption of lithium ions and their counter-ions. In contrast to other batteries that contain toxic, polluting heavy-metals, StoreDot’s materials leave a minimal environmental footprint.
Low cost
StoreDot’s organic and polymer electrode raw-material compounds are readily available and reduce the overall cost of the battery.
MolecuLED displays for LCD TVs and mobile devices
StoreDot’s innovative MolecuLED layer, containing color-conversion and color-enhancing compounds, is intended for manufacturers of LCD TV displays and mobile devices, designed specifically to integrate in any backlit display. Comprising proprietary organic molecules, StoreDot’s MolecuLED technology emits vibrant colors that exceed the NTSC standard.
Fig. 1 is a chromaticity diagram that shows how the human eye experiences visible, naturally-saturated bright colors produced by a computer monitor or a TV (tongue-shaped figure), compared to StoreDot’s MolecuLED color-gamut, standard RGB and NTSC color-gamut. The wavelengths in the diagram are presented in nanometers.
Using the same power consumption as current LCD screens, StoreDot technology enhances LCD displays by providing a far brighter picture (as shown in Fig. 3). Furthermore, StoreDot’s MolecuLED offers an operational lifetime of over 20,000 hours.
Energy-efficient
When excited by light, the MolecuLED layer generates illumination of unmatched color and wavelength accuracy, while also displaying high quantum efficiency which guarantees high energy-efficiency and considerable cost savings. Moreover, MolecuLED brightness is significantly increased as a result of minimized energy loss from the bottom polarizer due to the unique intrinsic properties of StoreDot’s organic compounds.
https://www.youtube.com/watch?v=RQTQMNojy3Q[:]
