Results 71 to 80 of about 694,028 (301)

Tracking Battery Microstructural Degradation Through Directional Thermal Transport Signatures

Advanced Functional Materials, EarlyView.
In lithium‐ion batteries, heat conduction varies between the through‐plane and in‐plane directions because of the cell's layered structure. Therefore, cell degradation influences thermal conductivity in each direction uniquely due to detailed microstructural and compositional changes.
Mohammad Shoghi Tekmedash, Rituparna Mohanty, Jack Leber, David Nageb, Mirella Richard, Sharan Singh, Amin Reihani   +6 more
wiley   +1 more source

The GALAH Survey : Lithium-strong KM dwarfs [PDF]

, 2019
Identifying and characterizing young stars in the Solar neighbourhood is essential to find and describe planets in the early stages of their evolution. This work seeks to identify nearby young stars showing a lithium 6708 Å absorption line in the GALAH ...
Martell, S.,, Traven, G., Zwitter, T., Casagrande, L., De Silva, G., Horner, J., De Silva, G.,, Martell, S., Nordlander, T., Buder, S.,, Zerjal, M., GALAH Collaboration, Nordlander, T.,, Buder, S., Casagrande, L.,, Lin, J., Čotar, K., Åotar, K.,, Zwitter, T.,, Ireland, M. J.,, Collaboration, G., Åotar, K., Ireland, M., Ireland, M. J., Zerjal, M.,, Horner, J.,, Lin, J.,, Buder, Sven, De Silva, Gayandhi, Žerjal, Maruša, Casagrande, Luca, Nordlander, Thomas, Ireland, Michael, Lin, Jane, Martell, Sarah, Horner, Jonathan   +35 more
core   +1 more source

SPECTRAL INVESTIGATION OF FIELD BLUE STRAGGLERS

Odessa Astronomical Publications, 2017
Field blue stragglers are counterparts of cluster blue stragglers. They were selected by Olsen in base of specific Stromgren indices among bright metal-deficient early F dwarfs. For some stars from this list, the high-resolution and high S/N CCD spectra
I. V. Chernyshova
doaj   +1 more source

Spatially Regulated Silicon Clusters in Trimodal Composite Anodes for High‐Energy Lithium‐Ion Batteries

Advanced Functional Materials, EarlyView.
A trimodal anode architecture spatially regulates silicon clusters within confined interstitial environments formed by graphite and contorted hexabenzocoronene. This confinement suppresses silicon aggregation and localized stress while enabling efficient Li‐ion transport, achieving high‐capacity, stable lithium‐ion batteries.
Jeongmi Joo, Minsung Kang, Seung Hak Oh, Jee Ho Ha, Hyunji Cha, Jimin Han, Ji‐Su Lim, Dae Hyeon Kwon, Won‐Jin Kwak, Sang Kyu Kwak, Seokhoon Ahn, Seok Ju Kang   +11 more
wiley   +1 more source

Li-rich Unevolved Stars from LAMOST-MRS

The Astrophysical Journal
Based on the spectra from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope medium-resolution spectroscopic survey, we select a sample of 88 Li-rich unevolved star candidates.
Ze-Ming Zhou, Jian-Rong Shi, Shao-Lan Bi, Hong-Liang Yan, Kai-Ke Pan, Ming-Yi Ding, Jiang-Tao Wang, Shuai Liu, Chun-Qian Li, Yu-Tao Zhou, Jing-Hua Zhang, Xiang-Song Fang, Xian-Fei Zhang, Tian-Yi Chen, Xiao-Jin Xie, Yao-Jia Tang, Tai-Sheng Yan, Guo Li   +17 more
doaj   +1 more source

Cerium: The lithium substitute in post-AGB stars [PDF]

Astronomy & Astrophysics, 2002
In this letter we present an alternative identification for the line detected in the spectra of s-process enriched low-mass post-AGB stars around 6708A and which was interpreted in the literature as due to Li. Newly released line lists of lanthanide species reveal, however, the likely identification of the line to be due to a CeII transition.
Reyniers, M., Winckel, H. V., Biémont, Emile, Quinet, Pascal   +3 more
openaire   +2 more sources

Nitride MXenes Beyond Carbides: Bridging the Gap Between Computational Prediction and Experimental Realization

Advanced Functional Materials, EarlyView.
Nitride MXenes remain constrained by a persistent gap between computational prediction and experimental realization. This Review identifies the thermodynamic, kinetic, and chemical barriers limiting their synthesis, critically evaluates emerging fabrication routes, and proposes a multidimensional computational‐experimental framework to accelerate the ...
Naresh Varnakavi, Masoud Soroush
wiley   +1 more source

Protostellar accretion and the cosmological lithium problem

, 2020
The cosmological lithium problem, i.e. the discrepancy between the lithium abundance predicted by the Big Bang Nucleosynthesis and the one observed for the stars of the "Spite plateau", is one of the long standing problems of modern astrophysics.
E. Tognelli, M. Salaris, S. Degl'Innocenti, P. G. Prada Moroni, S. Cassisi   +4 more
core  

Lithium abundances and extra mixing processes in evolved stars of M67 [PDF]

, 2011
13 pages, 8 figuresInternational audienceAims. We present a spectroscopic analysis of a sample of evolved stars in M67 (turn-off, subgiant and giant stars) in order to bring observational constraints to evolutionary models taking into account non ...
de Medeiros, J.R., A. Lèbre, Richard, O., Lèbre, A., P. de Laverny, Richard, Olivier, C. H. F. Melo, de Laverny, P., Melo, C., Lebre, Agnès, Do Nascimento, J.D. Jr, Nascimento Jr, J. D. do, B. L. Canto Martins, J. D. do Nascimento Jr, Laverny, P. de, Melo, C. H. F., Canto Martins, B.L., Palacios, A., O. Richard, J. R. De Medeiros, Medeiros, José Renan de, Palacios, Ana, A. Palacios, Martins, B. L. Canto   +23 more
core   +1 more source

Matter accretion in metal-poor stars down to extremely metal-poor stars and the lithium problem

, 2021
Context. The formation and evolution of light elements in the Universe act as important cosmological constraints. It has long been assumed that the oldest stars of the Galaxy display the primordial lithium abundance in their outer layers, although ...
Deal, M., Richard, O., Vauclair, S., S. Vauclair, M. Deal, O. Richard   +5 more
core   +1 more source