Zobrazeno 1 - 8
of 8
pro vyhledávání: '"L. J. M. Davis"'
Publikováno v:
The Journal of Physical Chemistry C. 117:24181-24188
6Li selective inversion NMR experiments are used to reveal Li ion exchange rates and energy barriers for Li ion hopping in monoclinic Li3Fe2(PO4)3. The three crystallographically unique Li sites in this material are well resolved by magic-angle spinn
Publikováno v:
Solid State Nuclear Magnetic Resonance. 42:26-32
The effectiveness of two different selective inversion methods is investigated to determine timescales of Li ion mobility in paramagnetic Li intercalation materials. The first method is 1D exchange spectroscopy, which employs a 90°-τ(1)-90° sequen
Publikováno v:
Chemistry of Materials. 23:5138-5148
An electrochemical and structural study of the two-electron redox couple comprising the tavorite-type series of fluorophosphates Li1±xVPO4F (x = 0, 1)shows that both intercalation of LiVPO4F with L...
Autor:
Gillian R. Goward, Linda F. Nazar, L. J. M. Davis, T. N. Ramesh, Alex D. Bain, Brian L. Ellis
Publikováno v:
The Journal of Physical Chemistry C. 115:22603-22608
6Li selective inversion NMR studies are used to probe details of Li mobility in Li2VPO4F. Two crystallographically unique Li sites were resolved under magic-angle spinning (25–40 kHz) with paramagnetic shifts arising at 46 and −47 ppm (330 K). Th
Publikováno v:
Chemistry of Materials. 22:769-775
Details of Li-mobility in Li3Fe2(PO4)3 are elucidated using solid-state 6Li NMR. Three crystallographically unique Li sites were resolved under magic angle spinning (25 kHz) with paramagnetic shifts arising at 45 ppm, 102 ppm, and 216 ppm. These reso
Publikováno v:
Powder Diffraction. 24:35-40
SrBi2OB4O9is a novel centrosymmetric borate oxide forming in the SrO–Bi2O3–B2O3system. Its crystal structure has been determinedab initiofrom high-resolution X-ray and neutron powder diffraction data with the help of11B MAS-NMR data. SrBi2OB4O9cr
Publikováno v:
ChemInform. 43
Electrochemical results show that both intercalation of Li in LiVPO4F producing Li2VPO4F and deintercalation yielding VPO4F proceed by a two-phase mechanism.
Publikováno v:
Physical chemistry chemical physics : PCCP. 13(11)
Here we report the observation of electron delocalization in nano-dimension xLiFePO(4):(1 - x)FePO(4) (x = 0.5) using high temperature, static, (31)P solid state NMR. The (31)P paramagnetic shift in this material shows extreme sensitivity to the oxid