Effect of impeller design on the properties of Li1.03Ni0.8Mn0.1Co0.1O2 cathode material synthesized via co-precipitation method

Baris Cem Alpay, Ozgul Keles*

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Özet

Li1.03Ni0.8Mn0.1Co0.1O2 (NMC811) is the most promising composition for lithium-ion battery cathodes due to its low cobalt content and high capacity. The most widely used method to synthesize NMC811 is co-precipitation. Even though the co-precipitation process requires great control over each parameter, research that sheds light on the effect of impeller types on the electrode material's electrochemical performances is very limited. In this study, computational fluid dynamic (CFD) simulations for different types of impellers (pitched blade, hydrofoil blade, propeller, and Rushton turbine) were carried out using the Taguchi L4 array. The impellers were 3D printed, and the precursors (Ni0.8Mn0.1Co0.1(OH)2) were synthesized by utilizing those printed impellers. Simulations were used to gain insight into how impeller type affects the flow pattern, hence the final electrochemical performance of NMC811. The best cycle performance was obtained when a propeller-type impeller was used in coprecipitation. It delivered a discharge capacity of 174.58 mAh/g at a C/20 rate, with a coulombic efficiency of 96.02%. On the other hand, the Rushton turbine yielded the worst initial discharge capacity of 100.12 mAh/g at a C/20 rate. This significant difference proves that impeller geometry affecting the flow pattern strongly influences the electrochemical performance of the cathode.

Orijinal dilİngilizce
Makale numarası169583
DergiJournal of Alloys and Compounds
Hacim947
DOI'lar
Yayın durumuYayınlandı - 25 Haz 2023

Bibliyografik not

Publisher Copyright:
© 2023 Elsevier B.V.

Finansman

This project was financially supported by Istanbul Technical University, Turkiye Scientific Research Project Coordination Department under the project number of 41702. Special thanks to Arda KOCAMAN for his support on utilizing OO-KUMA KATANA EM 3-D Printer. We are grateful to Assoc. Prof. Dr. Billur Deniz KARAHAN and Istanbul Medipol University REMER (Regenerative and Restorative Medicine Research Center) for their support in SEM imaging. We acknowledge Prof. Dr. Cuneyt ARSLAN for his help on COMSOL software. This project was financially supported by Istanbul Technical University , Turkiye Scientific Research Project Coordination Department under the project number of 41702 . Special thanks to Arda KOCAMAN for his support on utilizing OO-KUMA KATANA EM 3-D Printer. We are grateful to Assoc. Prof. Dr. Billur Deniz KARAHAN and Istanbul Medipol University REMER (Regenerative and Restorative Medicine Research Center) for their support in SEM imaging. We acknowledge Prof. Dr. Cuneyt ARSLAN for his help on COMSOL software.

FinansörlerFinansör numarası
İstanbul Medipol Üniversitesi
Istanbul Teknik Üniversitesi41702

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