![]() Furthermore, it prescribes minimum recycling rates for the individual battery materials, which will be further tightened over time. This new regulation provides for the obligation to recycle batteries. In December 2022, the European Parliament and the Council were now able to reach a preliminary political agreement, so that the regulation will come into force in the next few years. In the EU, the EU Commission presented a proposal for a battery regulation in 2020, to which the EU Parliament responded with numerous demands for adjustments and, in some cases, tightening. How the EU wants to regulate battery recyclingĬrucial to large-scale battery recycling is the regulatory framework from the political side. Thus, battery recycling makes it possible to reduce dependence on battery material imports to some extent, in the medium term, and to make a significant contribution to the supply of the required materials, in the long term. In 2040, for example, according to our calculations, 40 percent of the cobalt and more than 15 percent of the lithium, nickel and copper required for cell production could be covered. Hahn added, "This possibility of using multiple anions opens up pathways for developing not only better performing lithium ion batteries but also futuristic sodium ion batteries that are expected to be even cheaper than the former." As an alternative, it is possible to synthesize oxy-chlorides for use in sodium ion batteries.However, if we compare the quantities of materials that can be recycled from end-of-life batteries with the demand for battery materials for cell production - which is currently in a phase of extreme market ramp-up - we have to conclude that recyclates will only be able to provide a small proportion of the battery materials required in the medium term. We were able to vary the anions with the use of these HEOs." Better lithium ion storage and cycling stability are not the only advantage of the HEOs developed in this collaboration. Speaking about the real-life implications of their discovery, Prof Bhattacharya said, "In practical terms, the retention of Coulombic efficiency with cycling points to longer life of batteries. ![]() Better lithium ion storage and cycling performance were due to the entropy stabilization in these compounds. They then compared the performance of these cathodes to conventional nickel-based cathode materials and found that not only was the specific capacity higher for the HEO, but the performance degradation during cycling was also much smaller than conventional cathodes. While only oxygen ions occupy the anionic site in traditional HEOs, they replaced some of the oxides with fluoride ions to adjust the electrochemical properties. ![]() Bhattacharya and his co-scientists developed HEOs containing the ions of five metals, manganese, cobalt, nickel, copper and zinc. The phase purity is believed to result from high configurational entropy that results from the five cat-ions occupying random sites in the crystal lattice, hence the name 'High Entropy Oxides' or HEOs. "The uniqueness of our cathode materials is that despite their high chemical complexity, they have phase purity," added Prof. Bhattacharya described the cathode materials the team developed as complex compounds that contain five or more metal ions in equal amounts. Hahn is also a Distinguished Honorary Professor of IIT Madras.ĭr. Horst Hahn, Executive Director, Institute of Nanotechnology, KIT led the research. Bhattacharya from the Department of Metallurgical and Materials Engineering, IIT Madras led the research along with Prof. Their research reports the synthesis of non-toxic and relatively inexpensive and more earth-abundant cathode materials with enhanced lithium ion storage properties and considerably improved cycling performance over currently used cathode materials. ![]() ![]() The team's research was recently published in the prestigious peer-reviewed RSC journal Energy and Environmental Science. ![]()
0 Comments
Leave a Reply. |