![]() ![]() The Volkswagen executive presented their structure compared to that of an NMC cell. Anyway, Volkswagen wants to have vehicles with batteries that start charging with an anodeless design: solid-state batteries. The Porsche Taycan and the Audi E-Tron GT already use cells with silicon in their anodes, making them spend about 30 percent less time charging and have 10 percent more range than the vehicles without that solution. Volkswagen’s idea is to add silicon to that recipe, something Oliver Blume said Porsche is pursuing as well. Most anodes are currently made of synthetic graphite. Regarding the anodes, they have an impact of only 10 percent in range, while charging time depends 100 percent on them, according to Blome. This is the chemistry Volkswagen wants to adopt for volume EVs. Manganese is a cheaper metal than nickel, and it can provide the same range of NMC cells for about 80 percent of the cost, just like LFP. Blome stresses that its advantages are not only in cost but also in cycling stability and safety.Ĭontrary to what most companies say, Blome said Volkswagen would pursue high-manganese cells, not high-nickel batteries. On the other hand, it offers only around 80 percent of the range. The range would also depend on that positive electrode by 90 percent.Ĭompared to an NMC cell, a lithium iron phosphate battery has about 80 percent of the cost – which is a good thing. It is a metal that does not pose as many concerns as cobalt or nickel in its mining, even if there are some.Ĭonsidering most electric vehicles currently use NMC cells, this is the parameter Blome uses to make comparisons with the other chemistries Volkswagen plans to use: LFP (lithium iron phosphate), and high-manganese.Īccording to the Volkswagen executive, the NMC cathode defines the cost of the cell by 40 percent. Lithium-ion batteries of all sorts use lithium in their anodes. That puts on the cathode’s shoulders the responsibility to make electric cars affordable and without compromise compared to combustion-engined vehicles.īlome also stressed that the cathodes are the control levers for a sustainable supply chain. The positive electrode has to do with costs and range. In other words, a better anode leads to faster charging, making the use of an electric car easier for those who fear spending too much time waiting for a charge. He started by saying that the negative electrode is responsible for charging times. Frank Blome, Volkswagen Group Component’s head of battery cell and system, was the man in charge of the explanation. ![]()
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