13-Jan-2022 - Westfälische Wilhelms-Universität Münster

Recycling Already Considered in the Development of New Battery Materials

Circular Economy: Challenges and Future Approaches for Battery Recycling

Enormous potential consists in the circular value chain of batteries. A review article on battery recycling provides an overview of the challenges of new material concepts for battery recycling and “Design for Recycling” as a promising approach of a sustainable battery economy.

Enormous ecological and economic potential consists in the circular value chain of batteries: The use of recycled materials not only reduces the costs of raw materials, but also enables energy savings in battery production. A review article on battery recycling published in the scientific journal “Advanced Energy Materials” provides an overview of the challenges of new material concepts for battery recycling, “Design for Recycling” as a promising approach of a sustainable battery economy as well as regulations and new battery directive demands in the United States, the European Union (EU) and China. “The dynamic development of the battery market is also reflected in the materials used. A mix of materials is often used as active materials, which complicates achieving high recycling efficiencies and purities of the different raw materials”, explains Dr Sascha Nowak, Head of Analytics and Environment Division at MEET Battery Research Center of the University of Münster. In addition, certain active materials such as lithium iron phosphate (LFP) have a lower intrinsic material value compared to lithium nickel cobalt manganese oxide (NCM). The profitability of recycling such materials is therefore reduced.

According to the research team, one approach to overcome existing and new challenges is the concept “Design for Recycling”. It aims to standardise screw connections and conjunctions between modules or cells in order to facilitate an automated disassembly of the cells. Moreover, the approach includes the design of materials. For example, water-based binder systems for electrode materials are to be developed to reduce expensive, potentially toxic solvents during recycling. Another possibility is direct recycling. “In this process, active materials, mainly from the cathode, are reactivated after use by relithiation for direct assembly in new cells – without a complete resynthesis of the materials having to take place”, Jonas Neumann, PhD student at MEET Battery Research Center, explains.

These and other processes are regulated by laws for battery recycling in some parts of the world. In the EU and China, battery producers are financially and physically responsible for the recycling of their batteries pursuant the “Extended Producer Responsibility (EPR)”. In addition, there are regulations for collection rates of used batteries, material recovery targets and labelling standards. The regulations in the United States are particularly focused on the recycling of nickel-cadmium and lead-acid batteries. More comprehensive requirements including the recycling of lithium ion batteries are only valid in four states so far.

Facts, background information, dossiers
More about WWU Münster
  • News

    New way to produce important molecular entity

    Among the most common structures relevant to the function of biologically active molecules, natural products and drugs are so-called vicinal diamines - in particular, unsymmetrically constructed diamines. Vicinal diamines contain two functional atomic groups responsible for the substance pr ... more

    Researchers solve a problem in organic chemistry

    In chemicals used in agriculture, as well as in pharmaceuticals and a variety of materials, pyridines are often found as so-called functional units which decisively determine the chemical properties of substances. Pyridines belong to the group of ring-shaped carbon-hydrogen (C-H) compounds ... more

    Researchers show that chiral oxide catalysts align electron spin

    Controlling the spin of electrons opens up future scenarios for applications in spin-based electronics (spintronics), for example in data processing. It also presents new opportunities for controlling the selectivity and efficiency of chemical reactions. Researchers recently presented first ... more