@article{Jiao2018, 
author = {Yuzhi Jiao and Haitao Zhang and Hailang Zhang and Ao Liu and Yanxia Liu and Suojiang Zhang},
title = {Highly bonded T-Nb2O5/rGO nanohybrids for 4 V quasi-solid state asymmetric supercapacitors with improved electrochemical performance},
year = {2018},
journal = {Nano Research},
volume = {11},
number = {9},
pages = {4673-4685},
keywords = {solid-state supercapacitor, nanohybrid electrode, ionogel polymer electrolyte, electrochemical performance},
url = {https://www.sciopen.com/article/10.1007/s12274-018-2049-1},
doi = {10.1007/s12274-018-2049-1},
abstract = {Orthorhombic niobium pentoxide (T-Nb2O5)/reduced graphene oxide nanohybrids were fabricated via the hydrothermal attachment of Nb2O5 nanowires to dispersed graphene oxide nanosheets followed by a high-temperature phase transformation. Electrochemical measurements showed that the nanohybrid anodes possessed enhanced reversible capacity and superior cycling stability compared to those of a pristine T-Nb2O5 nanowire electrode. Owing to the strong bonds between graphene nanosheets and T-Nb2O5 nanowires, the nanohybrids achieved an initial capacity of 227 mAh·g-1. Additionally, non-aqueous asymmetric supercapacitors (ASCs) were fabricated with the synthesized nanohybrids as the anode and activated carbon as the cathode. The 3 V Li-ion ASC with a LiPF6-based organic electrolyte achieved an energy density of 45.1 Wh·kg-1 at 715.2 W·kg-1. The working potential could be further enhanced to 4 V when a polymer ionogel separator (PVDF-HFP/LiTFSI/EMIMBF4) and formulated ionic liquid electrolyte were employed. Such a quasi-solid state ASC could operate at 60 ℃ and delivered a maximum energy density of 70 Wh·kg-1 at 1 kW·kg-1.}
}