Local Structures and Li Ion Dynamics in a Li10SnP2S12-Based Composite Observed by Multinuclear Solid-State NMR Spectroscopy
Local Structures and Li Ion Dynamics in a Li10SnP2S12-Based Composite Observed by Multinuclear Solid-State NMR Spectroscopy
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DOI：
10.1021/acs.jpcc.7b08350
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发表时间：
2017-10-26
影响因子：
3.7
通讯作者：
Indris, Sylvio
中科院分区：
文献类型：
--
作者：
Kaus, Maximilian;Stoffler, Heike;Indris, Sylvio
多核固态核磁共振波谱与穆斯堡尔谱和同步加速器衍射相结合，研究了 Li10SnP2S12 基复合材料中的局部和长程结构以及锂离子动力学。尽管可以检测到两个附加相（Li7PS6 和 Li4SnS4），但锂离子动力学非常快，Li 扩散系数为 1.6 x 10(-12) m(2)/s，Li+ 离子电导率类似于 2 mS/cm（均在 303 K 下），单个 Li+ 离子跳跃的激活势垒为 0.13 eV。
Multinuclear solid-state nuclear magnetic resonance spectroscopy was used in combination with Mossbauer spectroscopy and synchrotron diffraction to investigate the local and long-range structure as well as the Li-ion dynamics in a Li10SnP2S12-based composite. Although two additional phases could be detected (Li7PS6 and Li4SnS4), the Li-ion dynamics turn out to be very fast with a Li diffusion coefficient of 1.6 x 10(-12) m(2)/s, a Li+ ion conductivity of similar to 2 mS/cm (both at 303 K), and a small activation barrier of 0.13 eV for single Li+ ion jumps.