نتایج جستجو برای: li intercalation

تعداد نتایج: 47794  

Journal: :Фізика і хімія твердого тіла 2019

2012
C. R. Fell D. H. Lee Y. S. Meng J. M. Gallardo-Amores

High pressure–high temperature (HP/HT) methods are utilized to introduce structural modifications in the layered lithium transition metal oxides LiCoO2 and Li[NixLi1/3 2x/3Mn2/3 x/3]O2 where x 1⁄4 0.25 and 0.5. The electrochemical property to structure relationship is investigated combining computational and experimental methods. Both methods agree that the substitution of transition metal ions...

Journal: :Physical chemistry chemical physics : PCCP 2016
Mudit Dixit Monica Kosa Onit Srur Lavi Boris Markovsky Doron Aurbach Dan Thomas Major

Ni-rich Li-based layered Ni, Co, and Mn (NCM) materials have shown tremendous promise in recent years as positive electrode materials for Li-ion batteries. This is evident as companies developing batteries for electrical vehicles are currently commercializing these materials. Despite the considerable research performed on LiNiαCoβMnγO2 systems, we do not yet have a complete atomic level underst...

2001
P Papanek W A Kamitakahara P Zhou J E Fischer

Carbon-based anodes show many promising properties in lithium-ion rechargeable batteries. So-called ‘disordered carbons’ are characterized by a substantial amount of residual hydrogen, and exhibit large Li uptake capacities. We have employed a variety of neutron scattering techniques, coupled with computer simulations, to study the composition, local atomic structure, and vibrational dynamics o...

2011
Bo Xu Christopher R. Fell Miaofang Chi Ying Shirley Meng

High voltage cathode materials Li-excess layered oxide compounds Li[NixLi1/3 2x/3Mn2/3 x/3]O2 (0 < x < 1/2) are investigated in a joint study combining both computational and experimental methods. The bulk and surface structures of pristine and cycled samples of Li[Ni1/5Li1/5Mn3/5]O2 are characterized by synchrotron X-Ray diffraction together with aberration corrected Scanning Transmission Elec...

2013
Fitria Rahmawati Liviana Wijayanti

This research study the application of the immobilized TiO2 layer and Cu-TiO2 layer on graphite substrate as a negative electrode or anode for Li-ion battery. The titania layer was produced through chemical bath deposition method, meanwhile Cu particles were deposited electrochemically. A material can be used as an electrode as it has capability to intercalates Li ions into its crystal structur...

2007
L. Cristofolini

We have studied by NMR, magnetometry and x-ray diiraction several lithium doped fullerides Li x C 60. We have found that the stoichiometry x=12 represents the minimum Li doping for a phase whose structure is strikingly similar to that of pristine C 60 and it extends to much larger Li doping levels x. We have followed the temperature dependence of the structure of the x = 12 phase. It is fcc at ...

Journal: :Advanced electronic materials 2022

Abstract The hardware implementation of artificial neural networks requires synaptic devices with linear and high‐speed weight modulation. Memristors as a candidate suffer from excessive write variation asymmetric resistance modulation that inherently rooted in their stochastic mechanisms. Thanks to controllable ion intercalation/deintercalation mechanism, electrolyte‐gated transistors (EGTs) h...

Journal: :Carbon energy 2023

Back cover image: The crystal plane exposure is of great significance to the structural stability layered cathodes. In article number 10.1002/cey2.298, Qiu and co-workers deciphered degradation discrepancy Ni-rich cathode with a diverse proportion [003] crystallographic textures, revealing structure-activity relationship between face oxygen release stability. Although textures was conducive Li+...

Journal: :Journal of The Electrochemical Society 2022

K-ion batteries utilizing ionic liquid (IL) electrolytes are promising candidates for next-generation because of the abundance potassium resources, low redox potential potassium, and high safety ILs. Our major interest is in comprehensive understanding electrochemical alkali metal intercalation/deintercalation into graphite negative electrodes, can easily form intercalation compounds (GICs) wit...

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