Preparation of PLZST antiferroelectric ceramics by hydroxide coprecipitation method

2013 ◽  
Vol 39 ◽  
pp. S345-S348 ◽  
Author(s):  
G. Li ◽  
T.-Q. Yang ◽  
J.-F. Wang ◽  
S.-C. Chen ◽  
X. Yao
Keyword(s):  
Coprecipitation Method ◽  
Hydroxide Coprecipitation

Novel-shaped LiNi1/3Co1/3Mn1/3O2 prepared by a hydroxide coprecipitation method

2008 ◽  
Vol 80 (11) ◽  
pp. 2537-2542 ◽  
Author(s):  
Zexun Tang ◽  
Deshu Gao ◽  
Ping Chen ◽  
Zhaohui Li ◽  
Qiang Wu
Keyword(s):  
Specific Capacity ◽  
High Capacity ◽  
Coprecipitation Method ◽  
X Ray Diffraction ◽  
Capacity Retention ◽  
Uniform Size ◽  
Li Ion ◽  
New Generation ◽  
Optimized Conditions ◽  
Hydroxide Coprecipitation

Ni1/3Co1/3Mn1/3(OH)2, a precursor of LiNi1/3Co1/3Mn1/3O2 in new-generation Li-ion batteries, was prepared by a hydroxide coprecipitation method. Scanning electronic microscopy (SEM) micrographs reveal that the precursor particles thus obtained, show regular shape with uniform size under optimized conditions. X-ray diffraction (XRD) indicates that well-ordered layer-structured LiNi1/3Co1/3Mn1/3O2 was prepared after calcination at high temperature. The final product exhibited a spherical morphology with uniform size distribution (10 μm in diameter). At the terminal charging voltage of 4.3 and 4.5 V (vs. Li/Li+), the testing cells of LiNi1/3Co1/3Mn1/3O2 delivered a specific capacity of 161.2 and 184.1 mAh g-1, respectively. The high capacity retention of 98.0 and 96.1 % after charging to 4.3 and 4.5 V for 50 cycles, respectively, indicates that this material displays excellent cycling stability even at high cut-off voltage.

Preparation of a Nd1.85Ce0.15CuO4- deltasuperconductor via the hydroxide coprecipitation method

1994 ◽  
Vol 7 (2) ◽  
pp. 84-88
Author(s):  
S R Sheen ◽  
D H Chen ◽  
C T Chang ◽  
H Y Hsu ◽  
Y L Sun ◽  
...  
Keyword(s):  
Coprecipitation Method ◽  
Hydroxide Coprecipitation

scholarly journals Peculiar properties of crystal-chemical stucture of spinels of the system Mg(FexCr2-x)O4 obtained through the hydroxide coprecipitation method and solid state technology

2015 ◽  
Vol 5 (6(77)) ◽  
pp. 57
Author(s):  
Анна Віталіївна Луцась ◽  
Іван Петрович Яремій ◽  
Микола Петрович Матківський
Keyword(s):  
Solid State ◽  
Coprecipitation Method ◽  
Crystal Chemical ◽  
Hydroxide Coprecipitation ◽  
State Technology

Synthesis of Cubic and Rhombohedral Phased Nanocrystalline SnO2 Doped In2O3 [ITO] Powders with Coprecipitation Method

1999 ◽  
Vol 581 ◽  
Author(s):  
Bong-Chull Kim ◽  
Jeong-Joo Kim ◽  
Se-Hong Chang
Keyword(s):  
Particle Size ◽  
Aging Time ◽  
Spherical Shape ◽  
The State ◽  
Coprecipitation Method ◽  
Hydroxide Coprecipitation

ABSTRACTNanocrystalline ITO powders have been prepared by a hydroxide coprecipitation method. Through the variation of aging time after precipitation, we have characterized the size, morphology and the structure of the precipitates. It was found that the precipitates are in the state of InOOH at first. Further aging up to 48 h changed it to In(OH)3 structure. After calcinations of the precipitates, rhombohedral nanocrystalline ITO powder with spherical shape was produced from InOOH structured precipitates, while cubic nanocrystalline ITO powder was produced from In(OH)3. Fraction of the rhombohedral ITO powder decreased as the aging time increased. The particle size of the cubic ITO increased with aging time but that of rhombohedral ITO (∼15 nm) was almost invariant.

scholarly journals Influence of Chromium (III) Insertion on the Thermal Stability of Carbonated Magnesium and Aluminum Hydrotalcites Synthesized by the Hydroxide Coprecipitation Method

2018 ◽  
Vol 10 (1) ◽  
Author(s):  
Graciele Vieira Barbosa ◽  
Jusinei Stropa Meirelles ◽  
Lincoln Carlos Silva De Oliveira ◽  
Rafael Aparecido Ciola Amoresi ◽  
Maria Aparecida Zaghete ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Coprecipitation Method ◽  
Hydroxide Coprecipitation ◽  
Thermal Stability Of

Determination of tetracyclines in surface water and milk by the magnesium hydroxide coprecipitation method

2010 ◽  
Vol 1217 (3) ◽  
pp. 415-418 ◽  
Author(s):  
Wen-Hsien Tsai ◽  
Tzou-Chi Huang ◽  
Ho-Hsien Chen ◽  
Joh-Jong Huang ◽  
Min-Hsien Hsue ◽  
...  
Keyword(s):  
Surface Water ◽  
Magnesium Hydroxide ◽  
Coprecipitation Method ◽  
Hydroxide Coprecipitation

Effect of Temperature on Fe3O4 Magnetic Nanoparticles Prepared by Coprecipitation Method

2014 ◽  
Vol 900 ◽  
pp. 172-176 ◽  
Author(s):  
Ji Mei Niu ◽  
Zhi Gang Zheng
Keyword(s):  
Magnetic Nanoparticles ◽  
Coprecipitation Method ◽  
Effect Of Temperature ◽  
Vibrating Sample Magnetometer ◽  
X Ray Diffraction ◽  
X Ray ◽  
Magnetic Carriers ◽  
Average Grain Size ◽  
Or Gene ◽  
Block Temperature

The Fe3O4 magnetic nanoparticles obtained by the aqueous coprecipitation method are characterized systematically using scanning electron microscope, X-ray diffraction and vibrating sample magnetometer. These magnetic nanoparticles are spheric, dispersive, and have average grain size of 50 nm. The size and magnetic properties of Fe3O4 nanoparticles can be tuned by the reaction temperature. All samples exhibit high saturation magnetization (Ms=53.4 emu·g-1) and superparamagnetic behavior with a block temperature (TB) of 215K. These properties make such Fe3O4 magnetic nanoparticles worthy candidates for the magnetic carriers of targeted-drug or gene therapy in future.

scholarly journals Pressureless Sintering of YIG Ceramics from Coprecipitated Nanopowders

2021 ◽  
Vol 7 (5) ◽  
pp. 56
Author(s):  
Yimin Yang ◽  
Xiaoying Li ◽  
Ziyu Liu ◽  
Dianjun Hu ◽  
Xin Liu ◽  
...  
Keyword(s):  
High Temperature ◽  
Calcination Temperature ◽  
Sintering Temperature ◽  
Raw Materials ◽  
Secondary Phase ◽  
Coprecipitation Method ◽  
Pressureless Sintering ◽  
Densification Behavior ◽  
Sintering Process

Nanoparticles prepared by the coprecipitation method were used as raw materials to fabricate Y3Fe5O12 (YIG) ceramics by air pressureless sintering. The synthesized YIG precursor was calcinated at 900–1100 °C for 4 h in air. The influences of the calcination temperature on the phase and morphology of the nanopowders were investigated in detail. The powders calcined at 1000–1100 °C retained the pure YIG phase. YIG ceramics were fabricated by sintering at 1200–1400 °C for 10 h, and its densification behavior was studied. YIG ceramics prepared by air sintering at 1250 °C from powders calcinated at 1000 °C have the highest in-line transmittance in the range of 1000-3000 nm. When the sintering temperature exceeds 1300 °C, the secondary phase appears in the YIG ceramics, which may be due to the loss of oxygen during the high-temperature sintering process, resulting in the conversion of Fe3+ into Fe2+.

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