TY - JOUR
T1 - Comparing the behavior of nano-and microsized particles of LiMn1. 5Ni0. 5O4 spinel as cathode materials for Li-ion batteries
AU - Talyosef, Yosef
AU - Markovsky, B.
AU - Lavi, Ronit
AU - Salitra, G.
AU - Aurbach, D.
AU - Kovacheva, Daniela
AU - Gorova, Mila
AU - Zhecheva, Ekaterina
AU - Stoyanova, Radostina
PY - 2007
Y1 - 2007
N2 - We report on a rigorous comparative study of nano- and microparticles of LiMn1.5Ni0.5O4LiMn1.5Ni0.5O4 spinel as cathode materials for Li-ion batteries. The stability of these materials in LiPF6LiPF6 /alkyl carbonate solutions in temperatures up to 70°C70°C was explored. Capacity, cycling, rate capabilities, and impedance behavior were also studied. The methods included X-ray diffraction, Raman, X-ray photelectron, Fourier transform infrared, and electron paramagnetic resonance spectroscopies, and electron microscopy, in conjunction with standard electrochemical techniques: voltammetry, chronopotentiometry, and impedance spectroscopy. These materials show an impressive stability in solutions at elevated temperature. The use of nanomaterials was advantageous for obtaining a better rate capability of LiMn1.5Ni0.5O4LiMn1.5Ni0.5O4 electrodes. LiMn1.5Ni0.5O4LiMn1.5Ni0.5O4 particles develop a unique surface chemistry in solutions that passivates and protects them from detrimental interactions with solution species at elevated temperatures.
AB - We report on a rigorous comparative study of nano- and microparticles of LiMn1.5Ni0.5O4LiMn1.5Ni0.5O4 spinel as cathode materials for Li-ion batteries. The stability of these materials in LiPF6LiPF6 /alkyl carbonate solutions in temperatures up to 70°C70°C was explored. Capacity, cycling, rate capabilities, and impedance behavior were also studied. The methods included X-ray diffraction, Raman, X-ray photelectron, Fourier transform infrared, and electron paramagnetic resonance spectroscopies, and electron microscopy, in conjunction with standard electrochemical techniques: voltammetry, chronopotentiometry, and impedance spectroscopy. These materials show an impressive stability in solutions at elevated temperature. The use of nanomaterials was advantageous for obtaining a better rate capability of LiMn1.5Ni0.5O4LiMn1.5Ni0.5O4 electrodes. LiMn1.5Ni0.5O4LiMn1.5Ni0.5O4 particles develop a unique surface chemistry in solutions that passivates and protects them from detrimental interactions with solution species at elevated temperatures.
UR - https://scholar.google.co.il/scholar?q=Comparing+the+behavior+of+nano-+and+micro-sized+particles+of+LiNi0.5Mn1.5O4+spinel+as+cathode+materials+for+Li+ion+batteries&btnG=&hl=en&as_sdt=0%2C5
M3 - Article
SN - 0013-4651
VL - 154
SP - 682
EP - 691
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
IS - 7
ER -