Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 53-65 |
| Seitenumfang | 13 |
| Fachzeitschrift | CHEMPHYSCHEM |
| Jahrgang | 13 |
| Ausgabenummer | 1 |
| Publikationsstatus | Veröffentlicht - 16 Jan. 2012 |
Abstract
The development of highly conductive solids is a rapidly growing research area in materials science. In particular, the study of Li-ion conductors is driven by the ambitious effort to design powerful lithium-ion batteries. A deeper understanding of Li dynamics in solids requires the availability of a large set of complementary techniques to probe Li self-diffusion on different length and time-scales. We report on 7Li as well as 6Li spin-alignment echo (SAE) nuclear magnetic resonance (NMR) spectroscopy, which is capable of probing long-range diffusion parameters from a microscopic, that is, atomic-scale, point of view. So far, variable-temperature SAE NMR spectroscopy has been applied to a number of polycrystalline and glassy Li-ion conductors. The materials investigated serve as model systems to unravel the interesting features of the technique in determining reliable Li jump rates and hopping activation energies. In particular, the latter are compared with those probed by macroscopic techniques such as dc-conductivity measurements that are sensitive to long-range translational motions. Jumping lithium ions: Spin-alignment echo (SAE) NMR can be used to trace slow diffusion processes in solids (see picture). The results are comparable with those probed by macroscopic methods, making the technique an attractive tool to study lithium-ion conductors.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Atom- und Molekularphysik sowie Optik
- Chemie (insg.)
- Physikalische und Theoretische Chemie
Ziele für nachhaltige Entwicklung
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in: CHEMPHYSCHEM, Jahrgang 13, Nr. 1, 16.01.2012, S. 53-65.
Publikation: Beitrag in Fachzeitschrift › Übersichtsarbeit › Forschung › Peer-Review
}
TY - JOUR
T1 - From micro to macro
T2 - Access to long-range Li+ diffusion parameters in solids via microscopic 6, 7Li spin-alignment echo NMR spectroscopy
AU - Wilkening, Martin
AU - Heitjans, Paul
PY - 2012/1/16
Y1 - 2012/1/16
N2 - The development of highly conductive solids is a rapidly growing research area in materials science. In particular, the study of Li-ion conductors is driven by the ambitious effort to design powerful lithium-ion batteries. A deeper understanding of Li dynamics in solids requires the availability of a large set of complementary techniques to probe Li self-diffusion on different length and time-scales. We report on 7Li as well as 6Li spin-alignment echo (SAE) nuclear magnetic resonance (NMR) spectroscopy, which is capable of probing long-range diffusion parameters from a microscopic, that is, atomic-scale, point of view. So far, variable-temperature SAE NMR spectroscopy has been applied to a number of polycrystalline and glassy Li-ion conductors. The materials investigated serve as model systems to unravel the interesting features of the technique in determining reliable Li jump rates and hopping activation energies. In particular, the latter are compared with those probed by macroscopic techniques such as dc-conductivity measurements that are sensitive to long-range translational motions. Jumping lithium ions: Spin-alignment echo (SAE) NMR can be used to trace slow diffusion processes in solids (see picture). The results are comparable with those probed by macroscopic methods, making the technique an attractive tool to study lithium-ion conductors.
AB - The development of highly conductive solids is a rapidly growing research area in materials science. In particular, the study of Li-ion conductors is driven by the ambitious effort to design powerful lithium-ion batteries. A deeper understanding of Li dynamics in solids requires the availability of a large set of complementary techniques to probe Li self-diffusion on different length and time-scales. We report on 7Li as well as 6Li spin-alignment echo (SAE) nuclear magnetic resonance (NMR) spectroscopy, which is capable of probing long-range diffusion parameters from a microscopic, that is, atomic-scale, point of view. So far, variable-temperature SAE NMR spectroscopy has been applied to a number of polycrystalline and glassy Li-ion conductors. The materials investigated serve as model systems to unravel the interesting features of the technique in determining reliable Li jump rates and hopping activation energies. In particular, the latter are compared with those probed by macroscopic techniques such as dc-conductivity measurements that are sensitive to long-range translational motions. Jumping lithium ions: Spin-alignment echo (SAE) NMR can be used to trace slow diffusion processes in solids (see picture). The results are comparable with those probed by macroscopic methods, making the technique an attractive tool to study lithium-ion conductors.
KW - battery materials
KW - diffusion
KW - ion conductors
KW - lithium
KW - NMR spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=84855705104&partnerID=8YFLogxK
U2 - 10.1002/cphc.201100580
DO - 10.1002/cphc.201100580
M3 - Review article
AN - SCOPUS:84855705104
VL - 13
SP - 53
EP - 65
JO - CHEMPHYSCHEM
JF - CHEMPHYSCHEM
SN - 1439-4235
IS - 1
ER -