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=Volume 6 - 2018

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=NaTi2(PO4)3 has attracted great interest as anode material for sodium ion batteries owing to its open three-dimensional framework structure and almost unchanged volume during the charge and discharge process. However, the poor intrinsic electronic conductivity of NaTi2(PO4)3 still needs to be improved. In this work, porous NaTi2(PO4)3 nanocubes anchored on porous carbon nanosheets (NaTi2(PO4)3/C) are designed to improve the electrical conductivity. This material exhibit a large discharge capacity and good rate capacity: The first discharge capacity can reach 485 mAh g-1 at a current density of 0.1 A g-1; A capacity of 98 mAh g-1 can be retained at a high rate of 4 A g-1 even after 2,000 cycles. These results suggest that NaTi2(PO4)3/C is a promising anode material for sodium-ion batteries.