TY - JOUR
T1 - Excellent Rate Capability and Cycling Stability of Novel H2V3O8 Doped with Graphene Materials Used in New Aqueous Zinc-Ion Batteries
AU - Duan, Wenyuan
AU - Zhao, Mingshu
AU - Li, Yanlin
AU - Lashari, Najeeb ur Rehman
AU - Xu, Tong
AU - Wang, Fei
AU - Song, Xiaoping
N1 - Publisher Copyright:
Copyright © 2020 American Chemical Society
PY - 2020/3/19
Y1 - 2020/3/19
N2 - Nanorods of H2V3O8 wrapped in graphene sheets were prepared by hydrothermal synthesis and tested as the cathode in an aqueous rechargeable zinc-ion battery. Cyclic voltammetry indicates that H2V3O8 nanorods/graphene-523 K allows a rapid and reversible Zn2+ intercalation/extraction without the evolution of H2 and O2. The structure and composition of the composite graphene H2V3O8 nanorods [determined by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), selected area electron diffraction (SEAD), and X-ray photoelectron spectroscopy (XPS)] offered excellent electrochemical performance including a high specific discharge capacity of 401 mAh g–1 at 200 mA g–1, a high rate capacity of 170 mAh g–1 at 2 A g–1, and prolonged cycling stability after 200 cycles. The addition of the graphene sheets increases the diffusion coefficient of the zinc ions by an order of magnitude. Five light-emitting diodes (LEDs) are successfully powered by the aqueous rechargeable zinc-ion batteries (ARZBs) for more than 2 min to demonstrate the practical application. This work provides a creative choice for energy storage applications with low prices, green and environmental protection, and excellent safety.
AB - Nanorods of H2V3O8 wrapped in graphene sheets were prepared by hydrothermal synthesis and tested as the cathode in an aqueous rechargeable zinc-ion battery. Cyclic voltammetry indicates that H2V3O8 nanorods/graphene-523 K allows a rapid and reversible Zn2+ intercalation/extraction without the evolution of H2 and O2. The structure and composition of the composite graphene H2V3O8 nanorods [determined by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), selected area electron diffraction (SEAD), and X-ray photoelectron spectroscopy (XPS)] offered excellent electrochemical performance including a high specific discharge capacity of 401 mAh g–1 at 200 mA g–1, a high rate capacity of 170 mAh g–1 at 2 A g–1, and prolonged cycling stability after 200 cycles. The addition of the graphene sheets increases the diffusion coefficient of the zinc ions by an order of magnitude. Five light-emitting diodes (LEDs) are successfully powered by the aqueous rechargeable zinc-ion batteries (ARZBs) for more than 2 min to demonstrate the practical application. This work provides a creative choice for energy storage applications with low prices, green and environmental protection, and excellent safety.
UR - https://www.scopus.com/pages/publications/85080042615
U2 - 10.1021/acs.energyfuels.9b03736
DO - 10.1021/acs.energyfuels.9b03736
M3 - 文章
AN - SCOPUS:85080042615
SN - 0887-0624
VL - 34
SP - 3877
EP - 3886
JO - Energy and Fuels
JF - Energy and Fuels
IS - 3
ER -