Designing of high capacity Si nanosheets anode electrodes for lithium batteries
- Authors
- Park, S.-W.; Ha, J.H.; Cho, B.W.; Choi, H.-J.
- Issue Date
- 2021-09
- Publisher
- Elsevier B.V.
- Citation
- Surface and Coatings Technology, v.421
- Abstract
- Despite extensive studies for the last several decades, commercialization of silicon based anode materials for high-capacity batteries is slow. In particular, silicon demonstrates the rapid volumetric changes result in drastic capacity degradation for rechargeable lithium-ion batteries (LIBs). Here, we evaluate uniformly carbon-coated Si nanosheets (C-SiNSs) as effective anode materials in LIBs. We utilize the parylene C, an insulation polymer, to make a coating with a uniform thickness on the SiNSs using the chemical vapor deposition (CVD) method at room temperature. The synthesis method of the C-SiNSs includes a simple pyrolysis process at 950 °C after the uniformed parylene C coating on SiNSs. Particularly, the C-SiNSs coated with 10 nm carbon for anode material improve the capacity and the cycle performance (~2100 mAh g?1 for the 300th cycle at 0.15 C-rate) with approximately 100 % coulombic efficiency. ? 2021 Elsevier B.V.
- Keywords
- SILICON NANOPARTICLES; ELECTROCHEMICAL PERFORMANCE; CARBON/SILICON COMPOSITE; AMORPHOUS-CARBON; C COMPOSITE; THIN-FILM; ION; NANOFIBERS; PARYLENE; STABILITY; Carbon coating; Lithium-ion batteries; Parylene C; Pyrolysis; Silicon nanosheets
- ISSN
- 0257-8972
- URI
- https://pubs.kist.re.kr/handle/201004/116569
- DOI
- 10.1016/j.surfcoat.2021.127358
- Appears in Collections:
- KIST Article > 2021
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