Optimized Morphology and Tuning the Mn3+ Content of LiNi0.5Mn1.5O4 Cathode Material for Li-Ion Batteries
Lin, Y., Välikangas, J., Sliz, R., Molaiyan, P., Hu, T., & Lassi, U. (2023). Optimized Morphology and Tuning the Mn3+ Content of LiNi0.5Mn1.5O4 Cathode Material for Li-Ion Batteries. Materials, 16(8), Article 3116. https://doi.org/10.3390/ma16083116
Julkaistu sarjassa
MaterialsPäivämäärä
2023Tekijänoikeudet
© 2023 by the authors. Licensee MDPI, Basel, Switzerland
The advantages of cobalt-free, high specific capacity, high operating voltage, low cost, and environmental friendliness of spinel LiNi0.5Mn1.5O4 (LNMO) material make it one of the most promising cathode materials for next-generation lithium-ion batteries. The disproportionation reaction of Mn3+ leads to Jahn–Teller distortion, which is the key issue in reducing the crystal structure stability and limiting the electrochemical stability of the material. In this work, single-crystal LNMO was synthesized successfully by the sol-gel method. The morphology and the Mn3+ content of the as-prepared LNMO were tuned by altering the synthesis temperature. The results demonstrated that the LNMO_110 material exhibited the most uniform particle distribution as well as the presence of the lowest concentration of Mn3+, which was beneficial to ion diffusion and electronic conductivity. As a result, this LNMO cathode material had an optimized electrochemical rate performance of 105.6 mAh g−1 at 1 C and cycling stability of 116.8 mAh g−1 at 0.1 C after 100 cycles.
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https://converis.jyu.fi/converis/portal/detail/Publication/182826842
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This research was funded by the PASS project in Finland (2430356512, A76178, EU Regional Fund) and BATCircle2.0 (Business Finland 44612/31/2020). Financial supports from Tauno Tönningin Säätiö (20220020) and Fortum and Neste foundation (20220130).Lisenssi
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