Nano-Li3V2(PO4)(3)@C particles embedded in reduced graphene oxide sheets as cathode materials for high-performance lithium-ion batteries

作者：Sun, Meijuan^*; Han, Xiulin; Chen, Shuguang

来源：Solid State Ionics, 2018, 323: 166-171.

DOI：10.1016/j.ssi.2018.06.003

• Energy storage
• Li3V2(PO4)(3)@C
• Reduced graphene oxide
• Cathode
• Lithium storage performance

Monoclinic Li3V2(PO4)(3) is an attractive cathode material for lithium-ion batteries due to its high working potential and high theoretical capacity, but suffers from intrinsically poor electronic conductivity (2.4 x 10(-7) S cm(-1)). In this study, the reduced graphene oxide modified Li3V2(PO4)(3)@C electrode (denoted as Li3V2(PO4)(3)@C-rGO) has been fabricated via a facile approach. The graphene nanosheets are homogeneously dispersed among the nanosized Li3V2(PO4)(3)@C particles, leading to enhanced electronic conductivity. Besides, the coated carbon layer acts as a nanocontainer to prevent the direct contact between the active material and electrolyte, and inhibit the grain growth of Li3V2(PO4)(3) crystals. Due to the excellent electron/ion transport for this extraordinary structure, the as-prepared electrode shows outstanding electrochemical performances in terms of high reversible capacity, excellent rate property as well as stable cycling life. Therefore, we believe this designed Li3V2(PO4)(3)@C-rGO composite is a promising candidate for next-generation lithium-ion batteries.

• 出版日期2018-10-1
• 单位阜阳师范学院