论文标题
独立式Lipon：从基本研究到零外部压力下均匀致密的LI金属沉积
Freestanding LiPON: from Fundamental Study to Uniformly Dense Li Metal Deposition Under Zero External Pressure
论文作者
论文摘要
磷氧硝酸锂（Lipon）是一种众所周知的无定形薄膜固体电解质，在过去的三十年中已经对其进行了广泛的研究。尽管有望与Li金属阳极和各种阴极材料搭配，但刚性底物和Lipons的存在独特的无定形，空气敏感的自然设定限制，以全面地理解其内在特性，以实现未来的开发和应用。这项工作展示了一种以独立形式合成Lipon的方法，该方法表现出显着的灵活性和〜33 GPA的年轻S模量。固态核磁共振（SS-NMR）和差异扫描量热法（DSC）结果具有前所未有的高信噪比，可以通过这种独立的Lipon（FS-Lipon）获得，从而揭示了Li-Lipon界面键合环境的定量和定义的玻璃转换温度。 FS-Lipon结合了界面应力和播种层，在没有外部压力的情况下显示出均匀且完全致密的LI金属沉积。这样的FS-Lipon电影为Lipon材料和相关界面提供了新的机会，并为散装固态电池的接口工程提供了视角。
Lithium phosphorus oxynitride (LiPON) is a well-known amorphous thin film solid electrolyte that has been extensively studied in the last three decades. Despite the promises to pair with Li metal anode and various cathode materials, the presence of rigid substrate and LiPONs unique amorphous, air-sensitive nature set limitations to comprehensively understand its intrinsic properties for future development and applications. This work demonstrates a methodology to synthesize LiPON in a freestanding form that exhibits remarkable flexibility and a Young s modulus of ~33 GPa. Solid-state nuclear magnetic resonance (ss-NMR) and differential scanning calorimetry (DSC) results with unprecedented high signal-to-noise ratio could be obtained with such freestanding LiPON (FS-LiPON), revealing the Li-LiPON interface bonding environments quantitatively and a well-defined glass transition temperature for LiPON. Combining interfacial stress and a seeding layer, FS-LiPON demonstrates a uniform and fully dense Li metal deposition without the aid of external pressure. Such a FS-LiPON film offers new opportunities for fundamental study of LiPON material and associated interfaces, and provides perspectives for interface engineering in bulk solid-state battery.
