Here are the latest innovations in efficiency and sustainability from a world of academic research on electric car batteries
Today, the efficiency of energy storage devices is crucial for both applications in electric vehicles and for network infrastructures. We are therefore facing a spasmodic examination of new technologies which will inevitably lead to mass diffusion of these systems. Within some university centers, for example, they have managed to revitalize now inactive and useless areas of lithium to improve storage capacity of the batteries via high voltage discharges. Furthermore, researchers are conducting promising innovative studies that aim to give us a return eco-sustainable product use of natural materials as energy conductors for solid cells. One of the areas that has received the most attention in the recent period is actually linked to fast charging of cars which in some tests performed was increased up to 10 times.
EXPERIMENTAL BATTERIES THAT DECUPLICATE THE CHARGING SPEED
This is thanks to researchers from the University of Twente in the Netherlands who worked on developing an experimental cell using a innovative material to coat the anode, nickel niobate. According to researchers, the new electrode design allows you to recharge the battery at 10 times faster speed to today’s devices. The products used so far, on the other hand, have a porous structure which, because of its randomness, gives rise to various problems: it reduces the density, promotes the accumulation of lithium on the anode and causes a deterioration in performance. This discovery instead increases the speed without risk of damaging the anode material, cause battery failure or shorten battery life. If with nanotechnologies it is possible to accelerate times at the expense of stability, the new electrode will instead have a structure that remains uniform. Nichens Niobatel is actually a crystalline and regular material having identical and repeating channels for transporting lithium. The latter is definitely the most widely used material in cells, but it may still have some anomaly to be corrected.
REACTIVATE LITHIUM TO IMPROVE THE BATTERY
In fact, when a battery is recharged, the lithium ions travel back and forth between the two electrodes, but not all complete the path. This causes the formation of electrochemically inactive lithium “islands” which remain disconnected from the electrodes: these lumps cause a decrease in the storage capacity of the device or even cause fire. Researchers at Stanford University have developed a way to not only neutralize these inert lithium localizations, but have been working to bring them back to life. The team decided to add a discharge stream to high voltage when charging stimulates the effect of this now inefficient lithium and pushes it towards the electrode. According to the research team, this breakthrough could lead to improved designs of fast charging, longer duration by increasing the battery performance by 30%. The next generation of lithium metal accumulators will have very promising architectures and must take into account the need to create a eco-sustainable product who respects nature and benefits from it.
WOOD PROVIDES RECORD CABLE RELATIONSHIP FOR CAR BATTERIES
Authors of a new study have adopted this environmentally friendly philosophy and used la as a basis for a solid electrolyte cellulose extracted from wood, very thin material that can bend to absorb the load from the different charging cycles. A defect in the materials used in today’s lithium batteries in fact, they contain volatile compounds which pose a fire hazard in the event of a short circuit of the device and may promote the formation of inactive lithium particles which compromise performance. Solid leaders, on the other hand, can be created non-combustible materials and make the device less prone to slag formation. However, those made with ceramic materials do not withstand so much stress during charging-discharging due to their crazy nature. Researchers from Brown University and the University of Maryland have brought incredible innovation by using copper combined with cellulose nanofibrils which allows a record ion conductivity, which also speeds up recharging. We are convinced that the use of materials provided by nature will reduce the overall impact of battery production on our environment.