AUTHOR=Wang Ziqi , Liang Jiaojiao , Fan Kai , Liu Xiaodi , Wang Caiyun , Ma Jianmin 

TITLE=Porous NaTi2(PO4)3 Nanocubes Anchored on Porous Carbon Nanosheets for High Performance Sodium-Ion Batteries

JOURNAL=Frontiers in Chemistry

VOLUME=6

YEAR=2018

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2018.00396

DOI=10.3389/fchem.2018.00396

ISSN=2296-2646

ABSTRACT=<p>NaTi<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> has attracted great interest as anode material for sodium ion batteries owing to its open three-dimensional framework structure and limited volume changes during the charge and discharge process. However, the poor intrinsic electronic conductivity of NaTi<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> needs to be improved for high rate capability. In this work, porous NaTi<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> nanocubes anchored on porous carbon nanosheets (NaTi<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub>/C) are designed and developed. This material exhibits a large discharge capacity and good rate capacity including a first discharge capacity of 485 mAh g<sup>−1</sup> at a current density of 0.1 A g<sup>−1</sup>, and 98 mAh g<sup>−1</sup> retained at a high rate of 4 A g<sup>−1</sup> even after 2,000 cycles. These results suggest that NaTi<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub>/C is a promising anode material for sodium-ion batteries.</p>