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Solid-state synthesis of lanthanum-based oxides Co-coated LiNi0.5Co0.2Mn0.3O2 for advanced lithium ion batteries
- Source :
- Journal of Alloys and Compounds. 832:154959
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- The high voltage application of the LiNi0.5Co0.2Mn0.3O2 cathode is still hindered by its unstable surficial structure and poor capacity retention. Surface coating has been proved to be an effective strategy to deal with these problems. However, previous multistep surface coating approaches greatly complicate the synthesis procedure. In this work, a simple and large-scale solid-state approach is developed to prepare lanthanum-based oxides co-coated LiNi0.5Co0.2Mn0.3O2 cathode materials. Electrochemical tests indicate that the co-coated samples exhibit superior cycle life and higher rate performance than those of the pristine sample. Further studies reveal that the enhanced interface stability and facilitated electron transportation can be attributed to the synergetic contribution provided by the lanthanum-based oxides co-coating layer. The present work demonstrates that our approach can achieve cathode synthesis and surface coating synchronously, and shows great potential to apply on a large scale and extent to all Ni-rich cathodes.
- Subjects :
- Materials science
Mechanical Engineering
Metals and Alloys
chemistry.chemical_element
High voltage
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Electrochemistry
01 natural sciences
Cathode
0104 chemical sciences
law.invention
Ion
Surface coating
Chemical engineering
chemistry
Mechanics of Materials
law
Materials Chemistry
Lanthanum
Lithium
0210 nano-technology
Layer (electronics)
Subjects
Details
- ISSN :
- 09258388
- Volume :
- 832
- Database :
- OpenAIRE
- Journal :
- Journal of Alloys and Compounds
- Accession number :
- edsair.doi...........dd9c0ff7d7907f030ff6de8ad252139a