Reversible Na~+ insertion/extraction in conductive polypyrrole-decorated NaTi_2(PO_4)_3 nanocomposite with outstanding electrochemical property

摘要

In the present work, we have fabricated the polypyrrole-modified NaTi2(PO4)(3) (NaTi2(PO4)(3)@PPy) nanocomposite for sodium energy storage via the sol-gel approach and the self-assembly procedure. The physical and electrochemical performances for the resulted NaTi2(PO4)(3)@PPy have been characterized in this research. Benefiting from the conductive polypyrrole coating, the NaTi2(PO4)(3)@PPy displays outstanding sodium storage property with the specific capacity of 95.9 mAh g(-1) at 20 C after 400 cycles.