Kim, Myeong-Seong Bak, Seong-Min Lee, Suk-Woo Cho, Byung-Won Roh, Kwang Chul Kim, Kwang-Bum 2024-01-20T00:03:48Z 2024-01-20T00:03:48Z 2022-01-25 2017-11 0378-7753 https://pubs.kist.re.kr/handle/201004/122089 Herein, 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). (C) 2017 Elsevier B.V. All rights reserved. English ELSEVIER Self-assembled Li3V2(PO4)(3)/reduced graphene oxide multilayer composite prepared by sequential adsorption Article 10.1016/j.jpowsour.2017.09.057 1 JOURNAL OF POWER SOURCES, v.367, pp.167 - 176 JOURNAL OF POWER SOURCES 367 167 176 N scie scopus 000415780000020 2-s2.0-85029782216 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article BATTERY CATHODE MATERIALS HIGH-CAPACITY ELECTROCHEMICAL PERFORMANCE BINDER-FREE ION CARBON NANOCOMPOSITES NANOSHEETS SHEETS MICROSPHERES Multilayer structure Graphene-based 3D assembly Sequential adsorption method High-rate lithium-ion batteries Energy efficiency