TY - JOUR
AU - Yi, Jianhong
AB - Vanadate-based synthesis of battery electrodes has become a topic of research interest due to the high lithium storage performance. However, the rapid capacity decay seriously hinders its practical application. In order to improve the potential for Co3V2O8 (CVO) as an electrode in lithium batteries, a Na5V12O32 nanowire precursor with a smooth surface was obtained using the hydrothermal method. Next, the CVO nanowires assembled by nanosheets were fabricated by cation exchange from the Na5V12O32 precursor. Finally, the elemental phosphorus-coated CVO was successfully synthesized by a custom furnace. The characterization of X-ray diffraction (XRD) and inductively coupled plasma emission spectroscopy (ICP-ES) quantified the ratio of P and CVO, and Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) revealed the presence and coverage. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) further demonstrated the existence and morphology of P and CVO. Meanwhile, electrochemical measurements illustrated the stable lithium storage and notable rate performance of the P-CVO electrode as compared to AN-CVO. The P-CVO electrode holds a higher stable cycle performance after 190 cycles, with discharge specific capacity of 415.3 mA h g−1 and capacity retention of 97% at a current density of 1.0 A g−1 (872 mA h g−1, 2.0 A g−1, 98.8%), versus AN-CVO with 320.6 mA h g−1 (capacity retention of 79.5%) after only 100 cycles. Thence, the synthetic strategy provides a potential solution to enhance the stability of electrodes for high-performance lithium-ion batteries.
TI - Vapor phosphorus-coated cobalt vanadate as a high-performance anode for a lithium-ion battery
JF - Journal of Solid State Electrochemistry
DO - 10.1007/s10008-022-05127-9
DA - 2022-04-01
UR - https://www.deepdyve.com/lp/springer-journals/vapor-phosphorus-coated-cobalt-vanadate-as-a-high-performance-anode-UeJ3fDH5KU
SP - 917
EP - 927
VL - 26
IS - 4
DP - DeepDyve
ER -