PRODUCTS & QUALITY e- Discharging Charging – + ANODE Graphite CATHODE LiFePO4 Li+ SEPARATOR ELECTROLYTE HOW THE BATTERY IN AN ELECTRIC CAR WORKS The positive cathode consists of an ultrapure lithium metal oxide compound. The negative pole, the anode, contains graphite, a modifi- cation of carbon. The battery is filled with an anhydrous electrolyte that serves as a transport medium for the ions so that the lithium ions can migrate. The separator prevents a short circuit between the positive and negative poles. During charging, the positively charged lithium ions migrate through the separator into the anode, where they are deposited in the layered graphite structure. When the battery is discharging, i.e., when energy is being consumed, the lithium ions migrate back into the cathode. The electric motor in the car converts the electricity into mechanical energy, propelling the car forward. precursors for LFP synthesis. These include new battery-grade iron oxides and iron phosphate, which LANXESS intends to start producing. With a production capacity of over 300,000 tons per year, the company is one of the world’s leading manufacturers of iron oxides and operates large-scale pro- duction sites in Germany and Brazil, among other places. “The lion’s share of iron oxides produced outside of China come from the IPG business unit’s production sites,” says Stefano Bartolucci, Specialties Market Seg- ment Manager, IPG BU. RECYCLING WITH LEWATIT RESINS When it comes to sustainability, the LPT BU still sees many potential applications for its Lewatit ion exchange resins. They have proven themselves in ore processing, for example – they extract battery-grade nickel and cobalt, they refine, and they purify lith- ium concentrates of all kinds. These resins open up a further application in the field of battery production, namely lithium-ion battery recycling. “We produce selective Lewatit resins that can be used to extract battery grade metals such as lithium, nickel, cobalt, and manganese from black mass – i.e., shredded batteries. They can then be reused for cathode materials,” explains Dirk Steinhilber, Technical Marketing Manager, LPT BU. At the end of the Battery Show, one thing was clear: e-mobility is becoming more sus- tainable and safer thanks to solutions from LANXESS. show for the latest materials, technologies, and manufacturing processes in the rapid- ly growing electric mobility segment. “With our extensive portfolio of key raw materials and precursors, as well as our plants and sites in Europe, we can provide enormous support for the development of local value chains,” says Harry Zumaque, Head of New Business Development, Corporate Develop- ment GF. “With our expertise in process de- velopment, we are also exploring new fields in the area of battery recycling and thereby actively promoting sustainability in cell man- ufacturing and chemical production.” LANXESS IS BREAKING NEW GROUND As a cathode active material in lithium-ion batteries, lithium iron phosphate (LFP) is emerging as a sustainable alternative to materials containing cobalt and nickel. Ac- cording to forecasts, the demand for LFP will grow by 20 percent annually through 2030. LFP batteries are currently manufac- tured almost exclusively in China. To reduce this dependency and also the carbon footprint for European manufac- turers, LANXESS now offers customized 20 Xpress | 02/2024