2002年9月1日 · The 7 Li NMR line shapes reveal the heterogeneous structure of the nanocrystalline composites with crystalline grains and structurally disordered interfacial regions. They also show that the fraction of Li ions in fast diffusion pathways is increased in the composite material with x =0.5 compared to pure Li 2 O (about 3% for pure Li 2 O and ...

瑞典KTH皇家理工学院Istv´an Fur´o教授团队最近利用7Li 核磁共振波谱 (NMR)的方法量化了LIBs石墨电极SEI中含锂化合物和死锂的量并揭示了电池的衰减机理。

有鉴于此，以色列魏茨曼科学研究所 Michal Leskes 等人 利用化学交换饱和转移（CEST）磁共振成像（NMR）技术来研究金属Li与SEI之间的Li交换过程。 作者首先应用该方法揭示7Li-CEST对循环过程中生成的枝晶Li结构的影响，7Li-CEST方法可以直接和高效地比较不同电解质中形成的SEI对Li渗透率的影响，且可以定量得出不同温度下金属-SEI之间的Li交换速率，进一步计算出Li传递过程中所需的活化能，CEST提供了一种检测电池不可视化过程的简便方法，可作为一种有 …

2023年10月1日 · We show through experiments and molecular dynamic simulations that an increase in the Li 2 O/Na 2 O ratio can increase the mechanical properties of the glass.

2021年10月12日 · Recently solid-state NMR has shown the possibility of enabling selective and noninvasive measurement of Li + equilibrium exchange, maintaining the dynamic equilibrium, over electrolyte-solid ...

1991年11月1日 · The structure and the mechanism of lithium ion conduction in LiCl Li 2 O P 2 O 5 SiO 2 glasses were studied by 7 Li, 29 Si, and 31 P nuclear magnetic resonance (NMR) spectroscopy.

Understanding charge carrier transport in Li2O2, the storage material in the non-aqueous Li-O2 battery, is key to the development of this high-energy battery. Here, we studied ionic transport properties and Li self-diffusion in nanocrystalline Li2O2 by conductivity and temperature variable 7Li NMR spectrosco

Li diffusion in the nanocrystalline composite system (1 − x)Li2O:xAl2O3 was studied by NMR measurements. Heterogeneous, biexponential 7Li NMR relaxation is found and two Li species with different dynamic behaviour can be discriminated via their individual spin–spin and spin–lattice relaxation times.

Three isotropic resonances can be identified in the 31 P NMR spectra, which have been assigned to various phosphate species. Analysis of the ratios of integrated intensities in the 31 P spectra leads to models for the Ti and Sn coordination environments.

2002年9月1日 · Here, we used ⁷Li NMR to characterize interfacial effects in crystalline lithium bis(trifluoromethylsulfonyl)imide (LiTFSI) to which a small amount of ionic liquid EMIM-TFSI (EMIM: 1-ethyl-3 ...