Three-dimensional NaTi^sub 2^(PO^sub 4^)^sub 3^@C microsphere as a high-performance anode material for advanced sodium-ion batteries

Herein, three-dimensional NaTi2(PO4)3@C microsphere (denoted as 3D-NaTi2(PO4)3@C) has been designed and fabricated for the first time by using a facile spray-drying method. The well-crystallized 3D-NaTi2(PO4)3@C composite is formed by calcination at 800 °C under Ar atmosphere. The 3D microspheres wi...

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Published inSolid state ionics Vol. 322; p. 79
Main Authors Liu, Huaixin, Zhang, Hairong, Su, Caina, Li, Xuemei, Guo, Yong
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier BV 01.09.2018
Subjects
3-D technology
Anodes
Batteries
Crystallization
Decay rate
Electrode materials
Microspheres
Nanocomposites
Rechargeable batteries
Sodium-ion batteries
Studies
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Summary:Herein, three-dimensional NaTi2(PO4)3@C microsphere (denoted as 3D-NaTi2(PO4)3@C) has been designed and fabricated for the first time by using a facile spray-drying method. The well-crystallized 3D-NaTi2(PO4)3@C composite is formed by calcination at 800 °C under Ar atmosphere. The 3D microspheres with particle size of about 4 μm are assembled from 120 nm nanosized grains. As an anode material for sodium-ion batteries, the 3D-NaTi2(PO4)3@C composite exhibits good rate capability and long-cycle life due to the small NaTi2(PO4)3 nanocrystals and conductive carbon layer. It can deliver a reversible capacity of 126.6 mAh g−1 at 0.1C and show a capacity decay rate of <8% when cycled under the high rate of 10C for 500 cycles. These results demonstrate that the as-fabricated 3D-NaTi2(PO4)3@C material is a promising anode material for high-performance sodium-ion batteries.
ISSN:0167-2738
1872-7689