L. Fallarino , G. Salaverri , R. Cid , E. Gucciardi , M. Cabello , E. Gonzalo , M. Galceran
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引用次数: 0
摘要
作为概念验证,我们展示了一种材料设计途径,使我们能够利用热沉积技术在微尺度上制造钠(Na)金属阳极。我们的研究发现,直接镀在不锈钢集流器上的 10 μm 钠薄膜阳极可降低电镀过程中钠成核的能量障碍。同样,蒸发薄膜钠阳极也能实现与块状钠阳极一样稳定的全电池配置循环,而且比这里介绍的无阳极情况要稳定得多。这些见解可能会带来实际设计上的改变,从而有效利用金属钠,减轻重量,降低成本。此外,它们还为未来的发展提供了一个坚实的起点,即提高金属态 Na 电池的稳定性并延长其使用寿命。所有这些都为下一代钠基储能技术铺平了道路,因为能量密度和成本是下一代钠基储能技术的关键因素。
On the practical applicability of thermal evaporation technique to fabricate Na thin metal anodes for Na-metal batteries
We demonstrate, as proof of concept, a materials design path that allows us to exploit thermal deposition technique to fabricate sodium (Na) metal anodes at the microscale. Our study reveals that Na thin anodes <10 μm, directly coated on a stainless-steel current collector, reduces the energy barrier of Na nucleation during plating process. Likewise, evaporated thin-film sodium anodes enable achieving a cycling in a full battery configuration as stable as with bulk Na anode, and considerably more stable than the here presented anode-less case. These insights may lead to practical design changes toward the efficient use of metallic Na, alleviating weight and costs. In addition, they provide a solid starting point for future developments that focus on improving the stability and extending the life of Na-metal batteries. All this paves the way for the next-generation of sodium-based energy storage technologies, where energy density and cost are key factors.