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DOI：
10.1021/acs.macromol.0c00254
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发表时间：
2020
期刊：
影响因子：
5.5
通讯作者：
Laine, R. M.
中科院分区：
文献类型：
--
作者：
Zhang, X.;Temeche, E.;Laine, R. M.
在锂电池组件之间形成锂枝晶不可穿透界面的LiPON类玻璃是可以替代液体电解质的材料，从而允许生产全固态电池（ASB）。不幸的是，迄今为止，这些材料仅通过气相沉积引入。在这里，我们展示了设计和合成的易于缩放，低温，低成本，溶液加工的无机聚合物含有LiPON/LiSiPON元素。OPCl 3和六氯磷腈[Cl 2 P N] 3为使用MNH 2进行详细说明提供了起点（M = Li/Na）或（Me 3Si）NH，然后与控制量的LiNH 2反应，以产生分子量（MW）为1- 2kDa的低聚物/聚合物，其通过多核NMR、凝胶渗透色谱（GPC）、热重分析（TGA）、傅里叶变换红外（FTIR）、X射线粉末衍射（XRD）表征，X射线光电子能谱（XPS）和基质辅助激光解吸/电离（MALDI）-飞行时间（ToF）提供了150-200 °C的稳定性和50- 60%的陶瓷产率（800 °C）。7 Li NMR表明，吸附剂结合的Li+容易解离，有利于电化学应用。XPS显示出比通过气相方法（<1）更高的N/P比（1-3），其关联N/P比、7 Li位移和Li+电导率。Li 2SiPHN在400 °C/2 h/N2下提供最高的环境电导率3 × 10- 1 mS cm-1。
LiPON-like glasses that form lithium dendrite impenetrable interfaces between lithium battery components are enabling materials that may replace liquid electrolytes permitting production of all-solid-state batteries (ASBs). Unfortunately, to date, such materials are introduced only via gas-phase deposition. Here, we demonstrate the design and synthesis of easily scaled, low-temperature, low-cost, solution-processable inorganic polymers containing LiPON/LiSiPON elements. OPCl3and hexachlorophosphazene [Cl2P═N]3provide starting points for elaboration using MNH2(M = Li/Na) or (Me3Si)NH followed by reaction with controlled amounts of LiNH2to produce oligomers/polymers with molecular weights (MWs) ≈1–2 kDa characterized by multinuclear NMR, gel permeation chromatography (GPC), thermogravimetric analysis (TGA), Fourier-transform infrared (FTIR), X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and matrix-assisted laser desorption/ionization (MALDI)-time-of-flight (ToF) offering stabilities to 150–200 °C and ceramic yields (800 °C) of 50–60%.7Li NMR suggests that precursor-bound Li+dissociates easily, beneficial for electrochemical applications. XPS shows higher N/P ratios (1–3) than via gas-phase methods (<1) correlating N/P ratios,7Li shifts, and Li+conductivities. Li2SiPHN offers the highest ambient conductivity of 3 × 10–1mS cm–1at 400 °C/2 h/N2.