Flower‐like Vanadium Suflide/Reduced Graphene Oxide Composite: An Energy Storage Material for Aluminum‐Ion Batteries

• Published in: ChemSusChem Vol. 11; no. 4; pp. 709 - 715
• Main Authors: Zhang, Xuefeng, Wang, Shuai, Tu, Jiguo, Zhang, Guohua, Li, Shijie, Tian, Donghua, Jiao, Shuqiang
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 22.02.2018
• Subjects: Aluminum; aluminum-ion battery; cathode; Cathodes; Current density; Discharge; Electric Power Supplies; Electrode materials; Electrodes; Energy storage; Graphene; Graphite - chemistry; Oxides; Rechargeable batteries; reduced graphene oxide; Storage batteries; sulfide; Sulfides; Vanadium; Vanadium - chemistry; reduced graphene oxide; sulfide; aluminum-ion battery; cathode; energy storage
• ISSN: 1864-5631; 1864-564X; 1864-564X
• DOI: 10.1002/cssc.201702270

A flower‐like vanadium sulfide/reduced graphene oxide (VS4/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/AlCl4−, 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. Flower power: A flower‐like vanadium sulfide/reduced graphene oxide (VS4/rGO) composite is prepared by a typical hydrothermal method and investigated as cathode for aluminum‐ion batteries with non‐inflammable and non‐explosive ionic‐liquid electrolytes.