2022年1月1日 · The NaF SEI layer formed during cycles is proven to be conducive for fast Na ion transport and rigid enough to inhibit the formation of Na dendrites. The NaF SEI@Na electrodes demonstrate excellent cyclic performance in symmetric …

2023年5月6日 · SEI膜是一种由多种有机和无机组分（如ROCO 2 Na, Na 2 CO 3, Na 2 O, NaF等）组成的马赛克结构。其中，NaF具有好的电子绝缘性和高的机械强度，能有效地抑制电解液分解和钠枝晶的生长。因此，构建富含NaF的SEI膜有助于稳定钠负极表面，从而带来优异的电化学性 …

2024年5月25日 · In this study, dense Na 3 Zr 2 Si 2 PO 12 (NZSP) pellets are fabricated via a new sintering strategy using NaF as the melting agent for interfacial rivets. Detail studies uncover that adding NaF in the last step of ceramic sintering, rather than in the first step of phase formation, enhances the density and stability of the solid electrolyte.

2020年8月1日 · The structure of NaF–TeO 2 glasses and glass-ceramics has been studied by XRD, TEM, SEM, Raman and FTIR techniques. The results suggest that, for NaF ≤10 mol%, the entire NaF content enters the structure to convert TeO 4 …

2023年12月5日 · 同时，通过扫描电子显微镜(SEM)研究了循环后的电极形貌，结果发现未经处理的Na电极表面非常粗糙，而经处理后的Na电极表面相对光滑，表明富含NaF的人工界面层具有高的结构稳定性以实现Na的均匀电镀/剥离循环。

3 天之前 · Field-emission scanning electron microscopy (SEM, Hitachi S-4800 at 10 kV) and high-resolution transmission electron microscopy (HRTEM, Tecnia G20, FEI) were utilized to examine the morphologies ...

2024年8月19日 · Here, a NaF solid electrolyte interphase (SEI) is fabricated on the surface of sodium metal using a facile and straightforward gas–solid reaction between evaporated organic acid salt and sodium metal, to alleviate the reactivity of the sodium metal surface and prevent corrosion induced by organic electrolytes.

摘要 利用XRD、TEM、SEM、拉曼和FTIR技术研究了NaF-TeO2玻璃和微晶玻璃的结构。结果表明，当 NaF ≤ 10 mol% 时，整个 NaF 含量都会进入结构，将 TeO4 单元转化为 TeO3/2F 和 Na+[TeO3+1]– 单元。

2022年7月10日 · A novel NaF phase change microcapsule with a carbon shell (NaF@C microcapsule) was prepared by a simple approach. The carbon shell was synthesized by carbonization of a resole-type phenolic resin shell, which was encapsulated onto the surface of NaF particles by a simple phase separation process induced by tetraethoxysilane.

SEI膜可以在Na负极自发生成，其会因为无法承受Na沉积过程中严重的体积膨胀而破裂，破裂处成为促进Na枝晶形成的活性位点，从而严重降低Na金属电池的电化学性能和安全性。 因此，在循环过程中稳定Na/电解质界面是Na金属电池发展的关键。 来自哈工大化工与化学学院的 王殿龙 教授团队综述了不稳定SEI膜形成的基本原理、表征手段以及稳定化方法，最后对Na金属负极上的SEI膜发展作了展望。 相关论文以题为“Solid Electrolyte Interphases on Sodium Metal …