Abstract
• Self-supported GaZnON nanowires were in-situ synthesized on graphite layer. • Nanowire/graphite layer electrode delivers enhanced capacity and cycling stability. • Reversible intercalation lithium-ion storage mechanism were demonstrated. In this work, (Ga 1− x Zn x )(N 1− x O x ) (GaZnON) nanowire were in-situ synthesized on a graphite layer to generate a morphology for improved electrochemical performance in lithium-ion storage. This hybrid structure exhibited a large surface-to-volume ratio with fast electron and ion transport. The electrical conductivity of GaZnON nanowire was revealed by Hall Effect measurements. The GaZnON nanowire anode delivered a high capacity of 878.2 mA h g −1 at 0.1 A g −1 after 200 cycles, increased by 144% relative to a GaZnON powder anode. After 2000 cycles at 2.0 A g −1 , the discharge capacity was maintained at 326.6 mA h g −1 . The nanowire-based morphology was demonstrated as the origin of the fast charge transfer kinetic and improved pseudocapacitive. The ex-situ XRD and XPS measurements demonstrated the structural stability and reversible lithium-ion intercalation mechanism of GaZnON nanowire. This work provides a simple strategy for controllable GaZnON nanowire preparation, and also a deeper mechanism analysis to understand the lithium-ion storage process of GaZnON nanowire.
Published Version
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