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- Title
Watermelon-like multicore-shell Fe(PO<sub>3</sub>)<sub>2</sub>@carbon nanocapsule anode to construct an all iron phosphate-based sodium ion battery.
- Authors
Yue, Lu; Zhang, Jingyu; Kong, Meng; Li, Kai; Zhang, Wenhui; Guo, Xiaotian; Xiao, Mengmeng; Zhang, Feng; Pang, Huan
- Abstract
Rechargeable sodium ion battery (SIB) has attracted much attention recently. However, the deficiency of high-performance electrode materials limits its commercial development. Exploring new cost-effective, high safe electrode materials and full battery matching technology is an important direction of future research. In this work, a novel watermelon-like multicore-shell Fe(PO3)2@C nanocapsule anode material is designed via a facile and eco-friendly process for high performance SIB. Fe(PO3)2@C composite anode exhibits remarkable electrochemical performances for SIB, showing high sodium storage capacity (452 mAh·g−1 at 0.2 A·g−1), good rate (235 mAh·g−1 at 10 A·g−1), stable long-term cycling life (210 mAh·g−1 over 2,000 cycles under 5 A·g−1), and superior high-low temperature performance. Furthermore, a new type all iron-based phosphate full battery with high specific capacity is constructed, which can output initial capacity of 309 mAh·g−1 and a high energy density of 254, 107, and 82 Wh·kg−1 at the power density of 186, 917, and 1,640 W·kg−1 at room temperature. The exceptional performance of multicore-shell Fe(PO3)2@C nanocapsule structure can be ascribed to the large specific surface, good structure stability, high conductivity, as well as the multiple layer protection for superior electron/ion transportation.
- Publication
Nano Research, 2022, Vol 15, Issue 10, p9026
- ISSN
1998-0124
- Publication type
Article
- DOI
10.1007/s12274-022-4678-7