The strong interaction between Mg2+and vanadium pentoxideVanadium pentoxide deteriorates crystal stability, which restricts the highly efficient magnesiumMagnesium storage of vanadium pentoxide. In contrast to the typical strategy of introducing interlayer water, the establishment of a fast diffusion path and robust structure are crucial for enhancing the magnesium storage properties of vanadium pentoxideVanadium pentoxide. Herein, we synthesize a new Mg2+ host of MgxV2O5@GO with Mg2+ pre-intercalationPre-intercalation and graphene modification through a simple hydrothermal method. In MgxV2O5@GO, Mg2+ acts as a ‘pillar’ within the layered V2O5 to alleviate the crystal structure from collapse, while graphene serves as a conductive network to optimize the charge transfer efficiency. Remarkably, MgxV2O5@GO cathodeCathode achieves an outstanding cycling life of 5000 cycles at 1 A g−1 with an excellent capacity retention of 98.3%. Profited from the conductive graphene that offers a rapid charge transfer network, MgxV2O5@GO exhibits a considerable rate performance of 150.6/81.7 mAh g−1 at 0.02/3 A g−1.
Magnesium Ion Embedded and Graphene Modified Vanadium Pentoxide Cathode for Superior Magnesium Storage Performance
The Minerals, Metals & Materials Series
TMS Annual Meeting & Exhibition ; 2024 ; Orlando, FL, USA March 03, 2024 - March 07, 2024
2024-02-03
6 pages
Article/Chapter (Book)
Electronic Resource
English
Small lithium/vanadium pentoxide reserve cells.
Tema Archive | 1975
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Online Contents | 2003
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