Morphology-optimization-enabled rate and cycle performance of LiNi1/3Co1/3Mn1/3O2 cathodes: evaluation at coin and pouch cell level under different temperatures
| Autor: | Kai Han, Ze-xun Tang, Xiaofei Chen, Hongqi Ye |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Diffraction Morphology (linguistics) Materials science Scanning electron microscope Crystal structure Atmospheric temperature range Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Cathode Electronic Optical and Magnetic Materials law.invention Dielectric spectroscopy Chemical engineering law 0103 physical sciences Electrical and Electronic Engineering Cyclic voltammetry |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 32:13948-13960 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-021-05971-x |
| Popis: | High power batteries need to be safe, stable, and have a high energy density and rate at wide temperature range. In this paper, three types of LiNi1/3Co1/3Mn1/3O2 (NCM111) cathodes with different surface morphologies were synthesized, and investigated using scanning electron microscopy, X-ray diffraction, cyclic voltammetry, electrochemical impedance spectroscopy, and through examining them within coin and pouch cells. The results show that the NCM111 cathode with quasi-crystal surface morphology has balanced performance and a stable crystal structure. When applied in pouch cells, this cathode shows a superior capacity retention of 94% at a discharging rate of 30 C and 83.33% after 2000 cycles at a charging/discharging rate of 3 C/3 C at 45 °C, which makes it a promising candidate for high power systems. |
| Databáze: | OpenAIRE |
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