Synthesis and characterization of multi–wall carbon nanotubes supported-hydrated iron phosphate cathode material for lithium–ion cells by a novel homogeneous precipitation method

Ionics ◽  
2012 ◽  
Vol 18 (8) ◽  
pp. 721-729 ◽  
Author(s):  
Yunsheng Wu ◽  
Lian Chen ◽  
Kongwei Xie ◽  
Jianping Li ◽  
Yu Chen ◽  
...  
2013 ◽  
Vol 32 (1) ◽  
pp. 47-50
Author(s):  
Guo Chen ◽  
Jin Chen ◽  
Lijun Liu ◽  
C. Srinivasakannan ◽  
Jinhui Peng

AbstractBaCO3 nanoparticles with different morphologies including needle-like, rod-like, bird's nest-like and flower-like have been successfully synthesized by the microwave homogeneous precipitation method using BaCl2·2H2O, NaOH and (NH2)2CO as raw materials with the help of different guide reagents, such as citric acid (CA), sodium triphosphate (STPP) and ethylene diamine tetraacetic acid (EDTA). Their phases and morphologies were characterized by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM), respectively. The characterization results show that different guide reagents have little effect on the phase structure and composition of products while they play significant roles in determining the morphology of products. All the synthesized BaCO3 nanoparticles have typical orthorhombic structures that are well-crystallized.


2014 ◽  
Vol 2014 ◽  
pp. 1-9
Author(s):  
Wang Li ◽  
Fa-gen Li ◽  
Jun Wang ◽  
Guo-meng Zhao

Uniform magnetic hollow nanospheres (GdNi2, Co5Gd) coated with Gd2O3have been successfully prepared on a large scale via a urea-based homogeneous precipitation method using silica (SiO2) spheres as sacrificed templates, followed by subsequent heat treatment. Nitrogen sorption measurements and scanning electron microscope reveal that these hollow-structured magnetic nanospheres have the mesoporous shells that are composed of a large amount of uniform nanoparticles. After reduction treatment, these nanoparticles exhibit superparamagnetism that might have potential applications in medicine. Furthermore, the developed synthesis route may provide an important guidance for the preparation of other multifunctional hollow spherical materials.


2011 ◽  
Vol 391-392 ◽  
pp. 1239-1243
Author(s):  
Zhan Hui Zhang ◽  
Zhi Liang Huang ◽  
Jian Qiu Li ◽  
Ru An Chi ◽  
Yue Hua Hu ◽  
...  

Hexagonal prismatic hydroxyapatite (Ca10(PO4)6(OH)2, HAP) was successfully prepared by a homogeneous precipitation method. The products were characterized by X-ray diffraction, Fourier transform infrared spectrum, and scanning electron microscope. The growth process of the hexagonal prism was surveyed in detail based on the effects of the reaction time on the phase composition and the crystal morphology.


2012 ◽  
Vol 28 (09) ◽  
pp. 2084-2090 ◽  
Author(s):  
WANG Zhen-Po ◽  
◽  
LIU Wen ◽  
WANG Yue ◽  
ZHAO Chun-Song ◽  
...  

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