Synthesis and properties of nanostructured LiNi1/3Co1/3Mn1/3O2 as cathode with lithium bis(oxalate)borate-based electrolyte to improve cycle performance in Li-ion battery
| Autor: | Fengjuan Tang, Qian Hou, Chunlei Li, Peng Wang, Shiyou Li |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Passivation Mechanical Engineering Inorganic chemistry Metals and Alloys chemistry.chemical_element 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Cathode Oxalate 0104 chemical sciences Electrochemical cell law.invention chemistry.chemical_compound chemistry Mechanics of Materials law Materials Chemistry Lithium 0210 nano-technology Boron |
| Zdroj: | Journal of Alloys and Compounds. 723:887-893 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2017.06.151 |
| Popis: | Nanostructure-LiNi 1/3 Co 1/3 Mn 1/3 O 2 (NCMa) has been successfully synthesized via a facile chemistry method using a cheap chelating agent of acetic acid. The NCMa has low cation mixing between Li + and Ni 2+ and exhibits a diameter of 100–300 nm. Specifically, the as-prepared particles NCMa with unique nano structure can increase the contact area with electrolyte, shorten Li + diffusion path and thus improve the Li + mobility. In addition, to reduce the adverse effect caused by NCMa, lithium bis(oxalate)borate (LiBOB) instead of LiPF 6 has been used as electrolyte salt to enhance the cycling of NCMa, due to the fact that LiBOB will generate relatively little acid in electrolyte. Furthermore, it is interest to note that LiBOB leads to forming a relative stable passivation film on the surface of NCMa cathode. Hence, compared with LiPF 6 , NCMa will generate remarkable electrochemical lithium storage properties in terms of high capacity, excellent rate capability and ultrastable long-term cycling performance. |
| Databáze: | OpenAIRE |
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