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Self-Templated Formation of Fluffy Graphene-Wrapped Ni5P4Hollow Spheres for Li-Ion Battery Anodes with High Cycling Stability
- Title
- Self-Templated Formation of Fluffy Graphene-Wrapped Ni5P4Hollow Spheres for Li-Ion Battery Anodes with High Cycling Stability
- Authors
- Zhang, Chunfei; Park, Gisang; Lee, Byong-June; Xia, Lan; Miao, He; Yuan, Jinliang; Yu, Jong-Sung
- DGIST Authors
- Zhang, Chunfei; Park, Gisang; Lee, Byong-June; Xia, Lan; Miao, He; Yuan, Jinliang; Yu, Jong-Sung
- Issue Date
- 2021-05
- Citation
- ACS Applied Materials and Interfaces, 13(20), 23714-23723
- Type
- Article
- Author Keywords
- anode; core-shell structure; graphene; Li-ion battery; nickel phosphide
- Keywords
- Anodes; Chemical vapor deposition; Energy conversion; Fuel cells; Fuel storage; Graphene; Ions; Nickel compounds; Phosphorus compounds; Solid electrolytes; Transition metals; Chemical vapor deposition methods; Energy conversion and storages; Fabrication methodology; Hierarchical structures; High reversible capacities; Lithium ion diffusion; Solid electrolyte interfaces; Transition metal phosphide; Lithium-ion batteries
- ISSN
- 1944-8244
- Abstract
- Transition-metal phosphides have gained great importance in the field of energy conversion and storage such as electrochemical water splitting, fuel cells, and Li-ion batteries. In this study, a rationally designed novel fluffy graphene (FG)-wrapped monophasic Ni5P4 (Ni5P4@FG) is in-situ-synthesized using a chemical vapor deposition method as a Li-ion battery anode material. The porous and hollow structure of Ni5P4 core is greatly helpful for lithium-ion diffusion, and at the same time, the cilia-like graphene nanosheet shell provides an electron-conducting layer and stabilizes the solid electrolyte interface formed on the Ni5P4 surface. The Ni5P4@FG sample shows a high reversible capacity of 739 mAh g-1 after 300 cycles at a specific current density of 500 mA g-1. The high capacity, superior cycling stability, and improved rate capability of Ni5P4@FG are ascribed to its unique hierarchical structure. Moreover, the present efficient fabrication methodology of Ni5P4@FG has potential to be developed as a general method for the synthesis of other transition-metal phosphides. © 2021 American Chemical Society.
- URI
- http://hdl.handle.net/20.500.11750/15416
- DOI
- 10.1021/acsami.1c03696
- Publisher
- American Chemical Society
- Related Researcher
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Yu, Jong-Sung
Light, Salts and Water Research Group
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Research Interests
Materials chemistry; nanomaterials; electrochemistry; carbon and porous materials; fuel cell; battery; supercapacitor; sensor and photochemical catalyst
- Files:
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- Collection:
- Department of Energy Science and EngineeringLight, Salts and Water Research Group1. Journal Articles
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