2021年10月1日 · Hexagonal WO 3 irreversible transformation to Li 2 WO 4 can be experimentally demonstrated via in situ HRTEM in the deep lithiation process including the initial activation of the lithium metal, the wetting of a single WO 3 nanowire and the migration of lithium ions into WO 3, and the restructuring of hexagonal WO 3.

2021年10月1日 · Real-time Observation of Deep Lithiation of Tungsten Oxide Nanowires by In Situ Electron Microscopy. It is shown that the rapid and deep lithiation of WO3 nanowires leads to the formation of highly disordered and near-amorphous Lix W O3 phases, but with no detectable traces of elemental W and segregated Li2 O phase formation.

摘要 通过简单的湿法包覆工艺成功合成了γ-WO3/Li2WO4复合包覆尖晶石包埋的Li [Li0.2Mn0.54Ni0.13Co0.13]O2正极。 通过X射线衍射（XRD）、场发射扫描电子显微镜（FE-SEM）、高分辨率透射电子显微镜（HR-TEM）、拉曼和X射线光电子能谱（XPS）对一系列合成材料进行了表征. γ-WO3/Li2WO4复合层成功包覆在富锂锰基材料表面，并在改性过程中形成尖晶石结构。 充放电测量表明改性样品显示出增强的循环特性和倍率能力。 在改性过程之后，对 …

2021年10月1日 · One of the most significant features of h-WO3 lithiation is the irreversible transformation from h-WO3 to Li2WO4. There are a large number of deep ion-trapping sites composed of 4 O atoms in...

2019年7月9日 · We examined a eutectic Li2WO4-Na2WO 4-K2WO4 melt and several its derivative melts at 873 K to develop a stable bath which enables electrodeposition of high quality tungsten.

在此基础上，界面原位诱导制备的Layered@spinel@Li2WO4结构可以进一步提升富锂层状氧化物的电化学性能。 尖晶石夹层的三维结构以及Li2WO4包覆层的立方隧道结构都有助于加速Li+扩散，为倍率性能的提升提供助力。

2011年1月31日 · Nanosize Li2WO4 is successfully synthesized using a mechanical milling method. The mean particle size of milled Li2WO4 is 37 nm and 31 nm as measured by Transmission Electron Microscopy (TEM)...

Herein, an in situ single nanowire-based cell is constructed to investigate the dynamic phase transformation and morphology evolution of h-WO3 nanowire in real-time during its deep lithiation. One of the most significant features of h-WO3 lithiation is the irreversible transformation from h-WO3 to Li2WO4. There are a large num

A mechanism on irreversible WO3-to-Li2WO4 transformation in deep lithiation reaction is demonstrated. With the aid of in situ transmission electron microscopy, we controllably triggered lithium-ion migration at the WO3/electrolyte interface and directly visualized the nanoscale lithium-ion migration as a stop motion movie.

2019年7月9日 · Li 2 WO 4 compound presents a compact structure, wherein the presence of some porosity is noticed. The band gap and the Urbagh energies were determined from the optical measurement. The DSC study shows the presence of an endothermic peak at T = 500 K, indicating the existence of a phase transition.