Abstract
Abstract Sodium-metal batteries are garnering increasing attention due to their utilization of abundant resources and high theoretical specific capacity. However, the growth of sodium dendrites has remained a challenging issue, which makes it difficult to apply. In this study, we employ carbon cloth as a substrate to mitigate the sodium dendrite growth, onto which sodium-affinitive material ZnO is grown to facilitate uniform nucleation. Furthermore, we enhance the cycling stability and rate performance significantly by introducing an external magnetic field. Under a 200 mT applied magnetic field and deposition/stripping at 1 mA/cm2 and 1 mAh/cm2, symmetric cells exhibit a remarkable cycling stability exceeding 1200 hours. Additionally, in full cells, NVP is used for the positive electrode, and ZnO/CC is the negative electrode, with a capacity of 108 mAh/g, and energy density maintained at 429.4 Wh/kg over 200 cycles under the influence of a 200 mT magnetic field.
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