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Title: Self-assembled Li 3V 2(PO 4) 3/reduced graphene oxide multilayer composite prepared by sequential adsorption

Here in this paper, we report on Li 3V 2(PO 4) 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 500more » cycles at 10C).« less
Authors:
 [1] ;  [2] ;  [1] ;  [3] ; ORCiD logo [4] ;  [1]
  1. Yonsei Univ., Seodaemoon-gu, Seoul (Korea, Republic of). Dept. of Material Science and Engineering
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Division
  3. Korea Advanced Inst. Science and Technology (KAIST), Seoul (Korea, Republic of). Center for Energy Convergence Research
  4. Korea Inst. of Ceramic Engineering & Technology, Jinju, Gyeongsang (Korea, Republic of)
Publication Date:
Report Number(s):
BNL-200049-2018-JAAM
Journal ID: ISSN 0378-7753
Grant/Contract Number:
SC0012704; NRF-2011-0030542
Type:
Accepted Manuscript
Journal Name:
Journal of Power Sources
Additional Journal Information:
Journal Volume: 367; Journal Issue: C; Journal ID: ISSN 0378-7753
Publisher:
Elsevier
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); National Research Foundation of Korea (NRF)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE
OSTI Identifier:
1425176