Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 539, Issue -, Pages 168-174Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2018.12.071
Keywords
Na3V2( PO4)(3); Porous structure; Nanoplate; Cathode materials; Sodium-ion batteries
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Funding
- National Natural Science Foundation of China [21573110]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Australian Research Council (ARC) through the ARC Discovery Project [DP170100436]
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Sodium super-ionic conductor (NASICON) structured Na3V2(PO4)(3) (NVP), a promising cathode material for sodium-ion batteries (SIBs), benefits by its unique three-dimensional (3D) channel structure. However, the inherent characteristics of NVP (such as low electrical conductivity) usually lead to inferior rate and long-cycling performance, which miss the requirements of practical application in electrical energy storage systems (ESSs). Herein, we propose the synthesis of porous high-crystalline Na3V2(PO4)(3)/C nanoplates (NVP/C-P) via hydrothermal method and post-calcination. The porous nanoplate structure provides increased specific surface area and shortened diffusion pathway for ion/electron transport. Consequently, NVP/C-P cathodes exhibit a high specific capacity (117 mAh g(-1), 0.2 C), exceptional rate performance (76.5 mAh g(-1), 100 C) and long cyclic stability (10,000 cycles). (C) 2018 Elsevier Inc. All rights reserved.
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