Porous LiNi1/3Co1/3Mn1/3O2 microsheets assembled with single crystal nanoparticles as cathode materials for lithium ion batteries
| Autor: | Jian Chen, Wen–Jun Duan, Zhong–Qing Liu, Ke−Jian Ban, Na Zhao |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Mechanical Engineering Metals and Alloys Nanoparticle chemistry.chemical_element 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Cathode 0104 chemical sciences law.invention Lithium ion transport Crystallinity chemistry Chemical engineering Mechanics of Materials law Materials Chemistry Lithium 0210 nano-technology Porosity Single crystal |
| Zdroj: | Journal of Alloys and Compounds. 768:782-788 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2018.07.268 |
| Popis: | The porous micro–nano structure LiNi1/3Co1/3Mn1/3O2 microsheets are prepared via a carbon gel–combustion process with a organic porous polypropylene membrane as hard template, and the microsheets are assembled from two–dimensional nano–scaled sheets comprised with single crystal nanoparticles. As cathode materials for Li–ion batteries, the LiNi1/3Co1/3Mn1/3O2 microsheets deliver excellent electrochemical properties at low or high current rates. For instance, the discharge capacity of the sample is 179.2 mAh g−1 at first cycle, and that is 163.0 mAh g−1 after 50 cycles at 0.5C with 91.0% capacity retention. The sample exhibits a high discharge capacity of 108.1 mAh g−1 after 500 cycles at 10C with 82.8% capacity retention. The high discharge capacity and outstanding cycling life could be attributed to the porous micro–nano structure, high crystallinity, small particle size, high contact area of the active electrode materials with the electrolyte, fast lithium ion transport and relatively low charge transfer resistance, etc. |
| Databáze: | OpenAIRE |
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