Self-assembled Li3V2(PO4)3/reduced graphene oxide multilayer composite prepared by sequential adsorption
[4];
- Yonsei Univ., Seodaemoon-gu, Seoul (Korea, Republic of). Dept. of Material Science and Engineering
- Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Division
- Korea Advanced Inst. Science and Technology (KAIST), Seoul (Korea, Republic of). Center for Energy Convergence Research
- Korea Inst. of Ceramic Engineering & Technology, Jinju, Gyeongsang (Korea, Republic of)
Here in this paper, we report on Li3V2(PO4)3 (LVP)/reduced graphene oxide (rGO) multilayer composites prepared via a sequential adsorption method and subsequent heat treatment, and their use as cathodes for high-rate lithium-ion batteries. The sequential adsorption process includes adsorbing oppositely charged components of anionic inorganic species and cationic head of a surfactant adsorbed to graphite oxide sheets, which is a key step in the fabrication of the LVP/rGO multilayer composites. The multilayer structure has open channels between the highly conductive rGO layers while achieving a relatively high tap density, which could effectively improve the rate capability. Consequently, the LVP/rGO multilayer composites exhibit a high tap density (0.6 g cm-3) and good electrochemical properties. Specifically, in the voltage range of 3.0–4.3 V, the composite exhibits a specific capacity of 131 mAh g-1 at 0.1C, a good rate capabilities (88% capacity retention at 60C), and long cycling performance (97% capacity retention after 500 cycles at 10C). Moreover, in the extended voltage range of 3.0–4.8 V, it exhibits a high specific capacity of 185 mAh g-1 at 0.2C, a good rate capability (66% capacity retention at 30C), and stable cycling performance (96% capacity retention after 500 cycles at 10C).
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); National Research Foundation of Korea (NRF); USDOE
- Grant/Contract Number:
- SC0012704; NRF-2011-0030542
- OSTI ID:
- 1425176
- Alternate ID(s):
- OSTI ID: 1495804
- Report Number(s):
- BNL-200049-2018-JAAM
- Journal Information:
- Journal of Power Sources, Vol. 367, Issue C; ISSN 0378-7753
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Electrospun Li 3 V 2 (PO 4 ) 3 nanocubes/carbon nanofibers as free-standing cathodes for high-performance lithium-ion batteries
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journal | January 2019 |
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