With the development of the development of sub -and supercritical carbon dioxide from the development of the recycling electrolytes used by lithium -ion batteries, it has paid a lot to move towards sustainable technology. This innovation method uses the unique features of carbon dioxide in its supercritical state (at this stage, which shows the characteristics of liquid and gas, which can effectively extract these ingredients without having dangerous by -products. This breakthrough may cause safer to be safer More effective recycling process, these processes help protect our planet, while recovering essential materials for future use.
Dr. Burçakebin of Chalmers University of Technology and NILS ZACHMANN supervised by Dr. Martina Petranikova, Dr. Robert Fox, Aidine State Laboratory, conducted this breakthrough research. This work was published in the “CO2 Magazine”, which explored the efficiency and safety of using carbon dioxide to extract electrolytes under different pressures and temperature conditions.
The electrolytes in lithium -ion batteries are essential for cell performance. Generally, it contains flammable and dangerous ingredients, such as carbonate di methyl methyl methyl ester, ethyl carbonate and lithium hexfluorophosphate (lipfffff6To. The conventional recycling method involves destruction of electrolytes and releases high temperature treatment of toxic gases (such as hydrogen fluoride (HF)). The purpose of Dr. Ebin and Dr. Zachmann is to selectively extract valuable electrolyte components without having harmful emissions to solve these problems.
The study shows that the density of carbon dioxide affected by pressure and temperature is essential for effective recovery of non -polarized electrolytic solvents (such as di methyl carbonate (DMC) (DMC) and carbonate (EMC)). It is worth noting that these solvents can be completely extracted, while polar component carbonate (EC) is only minimized. This selectivity reduces the complexity and potential harm related to the recycling process.
Zachmann explained the importance they discovered: “The most important result is that under the conditions of research, the carbonate and methyl methyl ester are completely selected, and the polar ethylene glycol is extracted in the trace amount. “This shows that major progress has been made during the recovery process to ensure effective and safely recover valuable materials.
The process was tested under various conditions and had a series of pressures and temperatures. The best extraction occurs at a moderate high pressure and cool temperature, reaching a large amount of electrolyte extract yield. It is worth noting that the study confirmed that the process did not lead to the decomposition of LIPF6To prevent the release of toxic gases.
In addition, the research team adopts advanced analysis technology, such as gas chromatography-mass spectrometer (GC-MS) and Fourier to convert infrared spectrum (FTIR) to verify the composition of the extracted electrolyte and exhaust gas. These analysis confirms the lack of harmful emissions and emphasizes the environmental benefits of this method.
Dr. Ebin emphasizes the impact of the environment and economy: “From the perspective of the environment, it is essential to safely remove electrolytes because it reduces the electrolyte incineration and the emissions of greenhouse gas emissions produced with the threat of Lib Wast. This is essential .
This study also emphasizes the potential of combining this process with existing water transparency technology to recover valuable metals from lithium -ion batteries. Through the first deletion of the opportunity, the researchers believe that the subsequent metal recovery process may be more effective and environmentally friendly.
In short, the implementation of the implementation of carbon dioxide and supercarious carbon dioxide in Nils Zachmann and his colleagues is used to recover the electrolytes from lithium ion batteries used, which represents hopeful progress of sustainable technology. This method not only enhances the recovery of valuable materials, but also greatly reduces the possible environmental harm related to the traditional recycling process. As the demand for lithium -ion batteries continues to increase, this innovative method is essential for the life cycle of managing these basic energy storage equipment.
Author’s Note: This work has received the Battery Fund Fund Plan (Project: P2019-90078) of the Swedish Energy Corporation, Form-Swedish Sustainable Development Research Committee (Project Number: 2021-01699) and Horizo N EUROPE (Project 101069685-RhinoCeros -Rhinoceros). However, the perspective and views expressed are only the author’s point of view, and do not necessarily reflect the views of the European Union or European climate, infrastructure and environmental execution agencies (Cinea). Neither the European Union and awarding agencies are responsible for them.
Journal reference
Nils Zachmann, Robert V. Fox, Martina Petranikova and Burçakebin. “The secondary critical carbon dioxide process of selectively recycled electrolyte from the expenditure lithium -ion battery is implemented.” Carbon dioxide utilization magazine 81 (2024): 102703. DOI:
