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Flower‐like Vanadium Suflide/Reduced Graphene Oxide Composite: An Energy Storage Material for Aluminum‐Ion Batteries
Author(s) -
Zhang Xuefeng,
Wang Shuai,
Tu Jiguo,
Zhang Guohua,
Li Shijie,
Tian Donghua,
Jiao Shuqiang
Publication year - 2018
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201702270
Subject(s) - materials science , graphene , faraday efficiency , vanadium , vanadium oxide , composite number , cathode , electrolyte , chemical engineering , oxide , energy storage , inorganic chemistry , composite material , nanotechnology , metallurgy , chemistry , electrode , engineering , power (physics) , physics , quantum mechanics
A flower‐like vanadium sulfide/reduced graphene oxide (VS 4 /rGO) composite was prepared by a typical hydrothermal method and it was investigated as cathode for aluminum‐ion batteries with non‐inflammable and non‐explosive ionic‐liquid electrolytes. The charge/discharge performance measurements were performed in a voltage range of 0.1–2.0 V versus Al/AlCl 4 − , which gave an initial charge/discharge specific capacity af approximately 491.57 and 406.94 mA h g −1 , respectively, at a current density of 100 mA g −1 . Additionally, in the cycling performance, the discharge capacity was observed to remain over 80, 70, and 60 mA h g −1 at current densities of 100, 200, and 300 mA g −1 after 100 cycles, respectively. The result of a coulombic efficiency over 90 % after 100 cycles and high retained capacity indicate that the composite is a favorable cathode material for new rechargeable aluminum‐ion batteries.