Low temperature combustion synthesis and performance of spherical 0.5Li2MnO3–LiNi0.5Mn0.5O2 cathode material for Li-ion batteries

2011 ◽  
Vol 175 ◽  
pp. 579-584 ◽  
Author(s):  
Zhuohong Zhong ◽  
Naiqing Ye ◽  
Hai Wang ◽  
Zhen Ma
2011 ◽  
Vol 399-401 ◽  
pp. 514-518
Author(s):  
Li Dan Yang ◽  
Ming Quan Ye ◽  
Ai Jun Han

New inorganic pigments Ce0.95ZrxPr0.05-xO2(x = 0, 0.01, 0.02, 0.03, 0.04, 0.05) based on CeO2-ZrO2-Pr6O11solid solutions were synthesized by low-temperature combustion synthesis (LCS) method using citric acid as a reductant and metal nitrate as an oxidant. The pigments are CeO2solid solutions doped with praseodymium and zirconium ions, and display colors ranging from dark brown via brick red to bright cream. The prepared pigments were characterized by X-ray powder diffraction, transmission electron microscopy, ultraviolet-visible absorption spectroscopy and colorimetrical measurements. Results show that cubic fluorite structure solid solution of 100 nm Ce0.95ZrxPr0.05-xO2particles can be obtained at 1000 °C. There was an effective absorption of visible blue and green in 600 nm, which is originated from the shift of charge transfer band in CeO2by doping of zirconium and praseodymium ions. Effective red hue was obtained for Ce0.95Zr0.02Pr0.03O2composition, which exhibited better L*, a*,and b* values (57.64, 23.83 and 23.78). The coloring mechanism is based on the introduction of an additional electronic energy level of unpaired 4f electron of the lanthanide ion into the cerianite forbidden band. Furthermore, the doping of Zr in Pr-CeO2system raises the slope of the absorption edge with a blue shift resulting in enhanced lightness. The prepared pigments were prospective to be alternatives for toxic pigments used in coloration of plastics.


CrystEngComm ◽  
2021 ◽  
Author(s):  
Feng Hu ◽  
Qian Wan ◽  
Liping Lu ◽  
Haiying Sun ◽  
Xiyan Zhang ◽  
...  

Multi-component fluoride phosphors BaxNay-nMnYzF2x+y+3z+3m: Er3+m (M=Li, K) sensitive to 1550 nm were synthesized by the low temperature combustion synthesis (LCS) method. The optimum batch formula was determined by the orthogonal...


2018 ◽  
Vol 6 (46) ◽  
pp. 12584-12591 ◽  
Author(s):  
Jun Yang ◽  
Bowen Wang ◽  
Yongpeng Zhang ◽  
Xingwei Ding ◽  
Jianhua Zhang

The p-type Li:NiOx thin films were successfully fabricated through the SUV route at 150 °C.


2011 ◽  
Vol 13 (9) ◽  
pp. 1016-1019 ◽  
Author(s):  
Zhe Li ◽  
Yuhui Wang ◽  
Xiaofei Bie ◽  
Kai Zhu ◽  
Chunzhong Wang ◽  
...  

2007 ◽  
Vol 546-549 ◽  
pp. 2111-2114
Author(s):  
X.H. Ma ◽  
Xin Tai Su ◽  
Qing Zhi Yan ◽  
Y.L. Jiao ◽  
L. Xiao ◽  
...  

This paper describes the details on synthesizing nanocrystalline Gd2BaCuO5 (Gd211) using low-temperature combustion synthesis(LCS). The morphology and structure of the powders are characterized by field emission scanning electron microscopy (FESEM) and XRD. The size of obtained powders by this method calcined at 800 C is about 100nm, which is much smaller than the powders synthesizing by conventional solid state route. Besides, the Gd211 powders synthesizing by LCS have a low calcination temperature with a high-purity. The microstructure of melt-textured samples is also observed by FESEM, the result shows that the size of Gd211 particles trapped in GdBa2Cu3O7 (Gd123) matrix could be refined by using ultrafine Gd211 powder as a precursor. The refined Gd211 particles with a good distribution resulted in the improvement of Jc values in this system.


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