Chemically anchored two-dimensional-SiOx/zerodimensional-MoO2 nanocomposites for highcapacity lithium storage materials
- Title
- Chemically anchored two-dimensional-SiOx/zerodimensional-MoO2 nanocomposites for highcapacity lithium storage materials
- Author
- 김한수
- Keywords
- HIGH-PERFORMANCE ANODES; LI-ION BATTERIES; MOO2 NANOSHEETS; MECHANISM; INSERTION; FIBERS; SIZE
- Issue Date
- 2020-06
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- RSC ADVANCES, v. 10, no. 36, page. 21375-21381
- Abstract
- Silicon oxides are promising alternatives for graphite anodes in lithium-ion batteries. SiOx nanosheets exhibit favorable anodic performances, including outstanding capacity retention and dimensional stability, due to their unique two-dimensional (2D) microstructures, but suffer from low specific capacity and poor initial coulombic efficiency. Here we demonstrate that chemically anchoring of molybdenum dioxide (MoO2) nanoparticles on the surface of 2D-SiOx nanosheets via a Mo–O–Si bond boosts both the reversible capacity and initial coloumbic efficiency without sacrificing the useful properties of 2DSiOx nanosheets. The enhancements can be attributed to the introduction of a zero-dimensional MoO2 nano-object, which offers abnormal storage sites for lithium. The proposed nano-architecturing shows how we can maximize the advantages of 2D nanomaterials for energy storage applications.
- URI
- https://pubs.rsc.org/en/content/articlelanding/2020/ra/d0ra02462ghttps://repository.hanyang.ac.kr/handle/20.500.11754/168848
- ISSN
- 2046-2069
- DOI
- 10.1039/d0ra02462g
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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