1. Polyethylene glycol (PEG)-assisted synthesis of self-assembled cactus-like NH4V3O8 for lithium ion battery cathode.
- Author
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Kou, Lingjiang, Cao, Liyun, Huang, Jianfeng, Song, Jiajia, Feng, Liangliang, Wang, Yong, Chen, Shaoyi, and Kajiyoshi, Koji
- Subjects
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POLYETHYLENE glycol , *LITHIUM-ion batteries , *SCANNING electron microscopy techniques , *CATHODES , *CACTUS , *HYDROTHERMAL synthesis - Abstract
Self-assembled cactus-like NH 4 V 3 O 8 is prepared through polyethylene glycol (PEG)-assisted hydrothermal synthesis method. The samples are characterized by X-ray diffraction and scanning electron microscopy techniques. Adjusting the pH value of the solution can effectively control the morphology of NH 4 V 3 O 8. The electrochemical measurements indicate that the sample which pH value is 3.7, shows the best cycling performance. It delivers an initial discharge capacity is 228 mAh g−1 and maintains at 156 mAh g−1 under 15 mA g−1 after 50 cycles. The proposed synthetic method can also be developed to address other electrode materials with inferior electronic conductivity and lithium ion diffusion. Schematic illustration of cactus-like NH 4 V 3 O 8 by PEG4000-assisted hydrothermal method Image, graphical abstract [ABSTRACT FROM AUTHOR]
- Published
- 2020
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