Non-uniform lithium-ion migration on micrometre scale for garnet- and NASICON-type solid electrolytes studied by 7Li PGSE-NMR diffusion spectroscopy

2018 ◽  
Vol 20 (26) ◽  
pp. 17615-17623 ◽  
Author(s):  
Kikuko Hayamizu ◽  
Shiro Seki ◽  
Tomoyuki Haishi
Keyword(s):  
Solid Electrolytes ◽  
Spin Echo ◽  
Lithium Ion ◽  
Solid Oxide ◽  
Ion Migration ◽  
Solid Oxide Electrolytes ◽  
Nasicon Type ◽  
Nmr Diffusion ◽  
Pgse Nmr

The migration behaviours of Li+ in three garnet- and one NASICON-type solid oxide electrolytes were studied on the micrometre scale by pulsed-gradient spin-echo (PGSE) 7Li NMR diffusion spectroscopy to clarify common and specific characteristics of each electrolyte.

scholarly journals Lithium Ion Conductivities of NASICON-type Li1+xAlxTi2^|^minus;x(PO4)3 Solid Electrolytes Prepared from Amorphous Powder Using a Mechanochemical Method

2014 ◽  
Vol 82 (10) ◽  
pp. 870-874 ◽  
Author(s):  
Hideyuki MORIMOTO ◽  
Masatoshi HIRUKAWA ◽  
Atsuyuki MATSUMOTO ◽  
Takashi KURAHAYASHI ◽  
Nobukiyo ITO ◽  
...  
Keyword(s):  
Solid Electrolytes ◽  
Lithium Ion ◽  
Amorphous Powder ◽  
Mechanochemical Method ◽  
Nasicon Type ◽  
Ion Conductivities

Contrary interfacial effects for textured and non-textured multilayer solid oxide electrolytes

RSC Advances ◽  
2016 ◽  
Vol 6 (41) ◽  
pp. 34390-34398 ◽  
Author(s):  
Lei Yao ◽  
Hiroki Nishijima ◽  
Wei Pan
Keyword(s):  
Solid Electrolytes ◽  
Solid Oxide ◽  
Interfacial Effect ◽  
Interfacial Effects ◽  
Solid Oxide Electrolytes

We report a negative and a positive interfacial effect for textured and non-textured polycrystalline Ce0.8Sm0.2O2−δ/Al2O3 multilayered solid electrolytes which are due to differences in microstructures.

Long-range Li ion diffusion in NASICON-type Li1.5Al0.5Ge1.5(PO4)3 (LAGP) studied by 7Li pulsed-gradient spin-echo NMR

2017 ◽  
Vol 19 (34) ◽  
pp. 23483-23491 ◽  
Author(s):  
Kikuko Hayamizu ◽  
Shiro Seki
Keyword(s):  
Long Range ◽  
Spin Echo ◽  
Ion Diffusion ◽  
Nasicon Type ◽  
Li Ion ◽  
Pgse Nmr ◽  
Parameter Dependent

PGSE NMR showed parameter-dependent 7Li diffusion for a solid conductor LAGP in micrometer space, suggesting disperse mobility of Li ions.

High lithium-ion conducting NASICON-type Li1+x−yAlxNbyTi2–x−y(PO4)3 solid electrolytes

2016 ◽  
Vol 297 ◽  
pp. 43-48 ◽  
Author(s):  
Xuefu Shang ◽  
Hiroyoshi Nemori ◽  
Shigehi Mitsuoka ◽  
Yasuaki Mastuda ◽  
Yasuo Takeda ◽  
...  
Keyword(s):  
Solid Electrolytes ◽  
Lithium Ion ◽  
Nasicon Type ◽  
Ion Conducting

Experimental Assessment of the Practical Oxidative Stability of Lithium Thiophosphate Solid Electrolytes

2019 ◽  
Author(s):  
Georg Dewald ◽  
Saneyuki Ohno ◽  
Marvin Kraft ◽  
Raimund Koerver ◽  
Paul Till ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Solid State ◽  
Oxidative Stability ◽  
Photoelectron Spectroscopy ◽  
Solid Electrolytes ◽  
Stability Limit ◽  
Lithium Ion ◽  
High Energy ◽  
Redox Activity ◽  
Solid State Batteries

<p>All-solid-state batteries are often expected to replace conventional lithium-ion batteries in the future. However, the practical electrochemical and cycling stability of the best-conducting solid electrolytes, i.e. lithium thiophosphates, are still critical issues that prevent long-term stable high-energy cells. In this study, we use <i>stepwise</i><i>cyclic voltammetry </i>to obtain information on the practical oxidative stability limit of Li<sub>10</sub>GeP<sub>2</sub>S<sub>12</sub>, a Li<sub>2</sub>S‑P<sub>2</sub>S<sub>5</sub>glass, as well as the argyrodite Li<sub>6</sub>PS<sub>5</sub>Cl solid electrolytes. We employ indium metal and carbon black as the counter and working electrode, respectively, the latter to increase the interfacial contact area to the electrolyte as compared to the commonly used planar steel electrodes. Using a stepwise increase in the reversal potentials, the onset potential at 25 °C of oxidative decomposition at the electrode-electrolyte interface is identified. X‑ray photoelectron spectroscopy is used to investigate the oxidation of sulfur(-II) in the thiophosphate polyanions to sulfur(0) as the dominant redox process in all electrolytes tested. Our results suggest that after the formation of these decomposition products, significant redox behavior is observed. This explains previously reported redox activity of thiophosphate solid electrolytes, which contributes to the overall cell performance in solid-state batteries. The <i>stepwise cyclic voltammetry</i>approach presented here shows that the practical oxidative stability at 25 °C of thiophosphate solid electrolytes against carbon is kinetically higher than predicted by thermodynamic calculations. The method serves as an efficient guideline for the determination of practical, kinetic stability limits of solid electrolytes. </p>

Experimental Assessment of the Practical Oxidative Stability of Lithium Thiophosphate Solid Electrolytes

2019 ◽  
Author(s):  
Georg Dewald ◽  
Saneyuki Ohno ◽  
Marvin Kraft ◽  
Raimund Koerver ◽  
Paul Till ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Solid State ◽  
Oxidative Stability ◽  
Photoelectron Spectroscopy ◽  
Solid Electrolytes ◽  
Stability Limit ◽  
Lithium Ion ◽  
High Energy ◽  
Redox Activity ◽  
Solid State Batteries

<p>All-solid-state batteries are often expected to replace conventional lithium-ion batteries in the future. However, the practical electrochemical and cycling stability of the best-conducting solid electrolytes, i.e. lithium thiophosphates, are still critical issues that prevent long-term stable high-energy cells. In this study, we use <i>stepwise</i><i>cyclic voltammetry </i>to obtain information on the practical oxidative stability limit of Li<sub>10</sub>GeP<sub>2</sub>S<sub>12</sub>, a Li<sub>2</sub>S‑P<sub>2</sub>S<sub>5</sub>glass, as well as the argyrodite Li<sub>6</sub>PS<sub>5</sub>Cl solid electrolytes. We employ indium metal and carbon black as the counter and working electrode, respectively, the latter to increase the interfacial contact area to the electrolyte as compared to the commonly used planar steel electrodes. Using a stepwise increase in the reversal potentials, the onset potential at 25 °C of oxidative decomposition at the electrode-electrolyte interface is identified. X‑ray photoelectron spectroscopy is used to investigate the oxidation of sulfur(-II) in the thiophosphate polyanions to sulfur(0) as the dominant redox process in all electrolytes tested. Our results suggest that after the formation of these decomposition products, significant redox behavior is observed. This explains previously reported redox activity of thiophosphate solid electrolytes, which contributes to the overall cell performance in solid-state batteries. The <i>stepwise cyclic voltammetry</i>approach presented here shows that the practical oxidative stability at 25 °C of thiophosphate solid electrolytes against carbon is kinetically higher than predicted by thermodynamic calculations. The method serves as an efficient guideline for the determination of practical, kinetic stability limits of solid electrolytes. </p>

Metallocene Polymerization Catalyst Ion-Pair Aggregation by Cryoscopy and Pulsed Field Gradient Spin−Echo NMR Diffusion Measurements

2003 ◽  
Vol 125 (18) ◽  
pp. 5256-5257 ◽  
Author(s):  
Nicholas G. Stahl ◽  
Cristiano Zuccaccia ◽  
Tryg R. Jensen ◽  
Tobin J. Marks
Keyword(s):  
Field Gradient ◽  
Spin Echo ◽  
Ion Pair ◽  
Pulsed Field ◽  
Polymerization Catalyst ◽  
Nmr Diffusion
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