Revisiting Li+ intercalation into various crystalline phases of Nb2O5 anchored on graphene sheets as pseudocapacitive electrodes
By Lingping Kong and Xiaodong Cao and Jitong Wang and Wenming Qiao and Licheng Ling and Donghui Long
Published in Journal of Power Sources
2016
Abstract
Herein, polycrystalline Nb2O5 nanoparticles including pseudo-hexagonal (TT-), orthorhombic (T-), tetragonal (M-) and monoclinic (H-) phases are uniformly anchored onto graphene sheets through a polyol-mediated solvothermal reaction and post heat-treatment, enabling us to discuss the effect of Nb2O5 crystalline phases on Li+ intercalation process. Electrochemical results show that Li+ intercalation into M- and H-Nb2O5 are also capacitive behavior, exhibiting higher capacity of 650