A graphene-MXene complex compound and graphite-like BC2
| Autor: | Takaho Tanaka, Wataru Hayami |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Graphene Superlattice Intercalation (chemistry) 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Lithium-ion battery 0104 chemical sciences law.invention Anode Crystallography law General Materials Science Atomic number Graphite 0210 nano-technology Ternary operation |
| Zdroj: | Solid State Sciences. 102:106170 |
| ISSN: | 1293-2558 |
| DOI: | 10.1016/j.solidstatesciences.2020.106170 |
| Popis: | This review discusses the ternary borocarbide Sc2B1.1C3.2 and graphite-like (g-) BC2. Sc2B1.1C3.2 has a layered structure in which two types of layers, graphene-like BC2 and MXene-like Sc2C, are stacked alternately; hence, Sc2B1.1C3.2 can be regarded as a graphene-MXene complex compound. The X-ray diffraction structural analysis was ambiguous due to the close atomic numbers of B and C; however, the most stable structure determined by first-principles calculations had B atoms in the BC2 layer arranged in a √ 3 × √ 3 –R30° superlattice which was an intermediate between the already known BC3 and BC structures. Bulk g-BC2 has also been studied for potential application as the anode of Li-ion batteries. Calculation of the intercalation potential revealed that Li atoms can be intercalated into BC2 to yield Li1.5BC2, which has a specific capacity approximately 3.1 times that of graphite (LiC6). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect