Preparation and characterization of sub-micro LiNi0.5−xMn1.5+xO4 for 5V cathode materials synthesized by an ultrasonic-assisted co-precipitation method

2007 ◽  
Vol 167 (1) ◽  
pp. 185-191 ◽  
Author(s):  
Ting-Feng Yi ◽  
Xin-Guo Hu
RSC Advances ◽  
2017 ◽  
Vol 7 (60) ◽  
pp. 37588-37595 ◽  
Author(s):  
Xinxin Zhao ◽  
Guangchuan Liang ◽  
Dan Lin

The performances of 14500 batteries assembled with Al-NCM as the cathode, synthesized by a modified method, are improved.


2020 ◽  
Vol 3 (1) ◽  
pp. 30-33
Author(s):  
Muthulakshmi M ◽  
Madhumitha G

Nanotechnology is a field of applied science focused on design, synthesis and characterization of nanomaterials. The nickel and magnesium have improved their applications in transparent electrodes and nano electronics. In addition, magnesium oxide has moisture resistance and high melting point properties. In the present work has been carried out in the development of green crystalline powder of nickel doped magnesium oxide nanoparticles by Co-precipitation method, from the mixture of nickel chloride and magnesium chloride with KOH as solvent. From the XRD results, crystalline size of the particle can be observed. Spherical structure of Ni doped MgO nanoparticles were indicated by SEM results and powdered composition of samples were obtained from FTIR. EDAX represents the peak composition of the nanoparticle. The above analytical techniques have confirmed that the Ni doped MgO nanoparticles obtained from the mixture of NiCl2 and MgCl2.


MRS Advances ◽  
2017 ◽  
Vol 2 (64) ◽  
pp. 4025-4030 ◽  
Author(s):  
T. Kryshtab ◽  
H. A. Calderon ◽  
A. Kryvko

ABSTRACTThe microstructure of Ni-Mg-Al mixed oxides obtained by thermal decomposition of hydrotalcite-like compounds synthesized by a co-precipitation method has been studied by using X-ray diffraction (XRD) and atomic resolution transmission electron microscopy (TEM). XRD patterns revealed the formation of NixMg1-xO (x=0÷1), α-Al2O3 and traces of MgAl2O4 and NiAl2O4 phases. The peaks profile analysis indicated a small grain size, microdeformations and partial overlapping of peaks due to phases with different, but similar interplanar spacings. The microdeformations point out the presence of dislocations and the peaks shift associated with the presence of excess vacancies. The use of atomic resolution TEM made it possible to identify the phases, directly observe dislocations and demonstrate the vacancies excess. Atomic resolution TEM is achieved by applying an Exit Wave Reconstruction procedure with 40 low dose images taken at different defocus. The current results suggest that vacancies of metals are predominant in MgO (NiO) crystals and that vacancies of Oxygen are predominant in Al2O3 crystals.


2017 ◽  
Vol 43 (15) ◽  
pp. 12120-12125 ◽  
Author(s):  
S.A.N.H. Lavasani ◽  
O. Mirzaee ◽  
H. Shokrollahi ◽  
A.K. Moghadam ◽  
M. Salami

2017 ◽  
Vol 53 (40) ◽  
pp. 5569-5572 ◽  
Author(s):  
Yang Liu ◽  
Dandan He ◽  
Ruimin Han ◽  
Gangya Wei ◽  
Yun Qiao

Nanostructured KxNayMnFe(CN)6 (x + y ≤ 2) has been synthesized via a facile co-precipitation method.


2018 ◽  
Vol 33 (4) ◽  
pp. 501-513 ◽  
Author(s):  
Hossein Semyari ◽  
Majid Salehi ◽  
Ferial Taleghani ◽  
Arian Ehterami ◽  
Farshid Bastami ◽  
...  

In this study, hydroxyapatite nanoparticles containing 10% doxycycline, a structural isomer of tetracycline, was prepared by the co-precipitation method. It was added to collagen solution for the preparation of the scaffold with freeze-casting method in order to develop a composite scaffold with both antibacterial and osteoinductive properties for repairing bone defects. The scaffolds were evaluated regarding their morphology, porosity, degradation and cellular response. The scaffolds for further investigation were added in a rat calvaria defect model. The study showed that after eight weeks, the bone formation was relatively higher in the collagen/nano-hydroxyapatite/doxycycline group with completely filled defect when compared with other groups. Histopathological evaluation showed that the defect in the collagen/nano-hydroxyapatite/doxycycline group was fully replaced by the new bone and connective tissue. Our results provide evidence supporting the possible applicability of doxycycline-containing scaffolds for successful bone regeneration.


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