Al-Doped Li[Ni0.78Co0.1Mn0.1Al0.02]O2 for High Performance of Lithium Ion Batteries
| Autor: | Kadirvelayutham Prasanna, Chang Woo Lee, Yong Nam Jo, Suk Hyun Kang, P. Santhoshkumar, Su Jung Do |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Process Chemistry and Technology Doping chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Cathode Lithium-ion battery Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Differential scanning calorimetry chemistry Chemical engineering law Aluminium 0103 physical sciences Electrode Materials Chemistry Ceramics and Composites Calcination 0210 nano-technology |
| Zdroj: | Ceramics International. 45:6972-6977 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2018.12.196 |
| Popis: | Li[NixCoyMnz]O2 (NCM) layered materials have been successfully adopted in commercial lithium ion batteries (LIBs). The presence of higher Ni content in cathode materials helps to improve the capacity. However, increased cation mixing on the surface of layered material leads to unstable structure. Aluminium (Al) doping is known to enhance the performance of cathode material by rendering thermal and structural stability. In this article, we synthesize Li[Ni0.8Co0.1Mn0.1]O2 (Bare NCM811) and Li[Ni0.78Co0.1Mn0.1Al0.02]O2 (Al-Doped NCM811) using simple co-precipitation process followed by calcination process. The electrochemical, morphological, and structural characteristics of the Al-Doped NCM811 are investigated and compared with the Bare NCM811. The discharge capacity of the Bare NCM811 and the Al-Doped NCM811 maintained 73.59% and 96.15% after the 100th cycle at a room temperature of 20 °C and 87.32% and 94.38% after the 50th cycle at an elevated temperature of 60 °C, respectively. The enhanced electrochemical performance of Al-Doped NCM811 is attributed to the improved thermal and structural properties of the electrode, as confirmed using differential scanning calorimeter (DSC) and particle compression tester (PCT). |
| Databáze: | OpenAIRE |
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