A New Lithium Iron Phosphate LiFe2P3O10 Synthesized at 600 °C from Precursor Obtained by Wet Chemistry

2006 ◽  
Vol 972 ◽  
Author(s):  
Atmane Ait-Salah ◽  
Chintalapalle V Ramana ◽  
François Gendron ◽  
Jean-François Morhange ◽  
Alain Mauger ◽  
...  
Keyword(s):  
Lithium Iron Phosphate ◽  
Iron Phosphate ◽  
Voltage Range ◽  
Wet Chemistry ◽  
Cell Parameters ◽  
Antiferromagnetic Ordering ◽  
Chemical Technique ◽  
Wet Chemical ◽  
Wet Chemical Technique

AbstractWe present the synthesis and characterization of a novel lithium iron polyphosphate LiFe2P3O10 prepared by wet-chemical technique from nitrate precursors. The crystal system is shown to be monoclinic (P21/m space group) and the refined cell parameters are a=4.596 Å, b=8.566 Å, c=9.051 Å and β=97.46°. LiFe2P3O10 has a weak antiferromagnetic ordering below the Néel temperature TN=19 K. Electrochemical measurements carried out at 25 °C in lithium cell with LiPF6-EC-DEC electrolyte show a capacity 70 mAh/g in the voltage range 2.7-3.9 V.

Drop Solution Calorimetric Studies of Interface Enthalpy of Cubic Silver (I) Oxide (Ag2O) Nanocrystals

2021 ◽  
Vol 878 ◽  
pp. 73-80
Author(s):  
Khansaa Al-Essa ◽  
A V Radha ◽  
Alexandra Navrotsky
Keyword(s):  
Thermodynamic Cycle ◽  
Solution Calorimetry ◽  
X Ray Diffraction ◽  
X Ray ◽  
Surface Areas ◽  
Chemical Technique ◽  
Crystallite Sizes ◽  
Wet Chemical ◽  
Wet Chemical Technique ◽  
Calorimetric Studies

The nanoscale, cubic silver (I) oxide (Ag2O.nH2O) with different particles sizes and surface areas were synthesized by a wet chemical technique. The prepared crystallite size ranges were from (33.3±0.3 to 39.4±0.4 nm). Interface areas were estimated by comparing the surface areas measured by N2 adsorption to the crystallite sizes refined from X-ray diffraction data. The interface enthalpy of Ag2O.nH2O nanocrystal was measured using isothermal acid solution calorimetry in 25%HNO3 at 26°C. The interface enthalpy was verified by utilizing thermodynamic cycle. The enthalpies of drop solution (ΔHds) for Ag2O.nH2O are exothermic and range from (-62.228±0.197) to (-64.025±0.434 kJ/mol), while its interface enthalpy is (0.842±0.508 J/m2). This work provides the first calorimetric measurement of the interface enthalpy of nanocrystalline silver (I) oxide (Ag2O.nH2O).

Synthesis and Characterization of Mg and Ti Ions Co-Doped Lithium Iron Phosphate and Its Lithium-Ion Batteries

2012 ◽  
Vol 28 (09) ◽  
pp. 2084-2090 ◽  
Author(s):  
WANG Zhen-Po ◽  
◽  
LIU Wen ◽  
WANG Yue ◽  
ZHAO Chun-Song ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Iron Phosphate ◽  
Lithium Ion ◽  
Iron Phosphate ◽  
Synthesis And Characterization ◽  
Co Doped

DyCrxFe(1-x)O3 nanoparticles prepared by wet chemical technique for photocatalytic applications

2020 ◽  
Vol 46 (17) ◽  
pp. 26675-26681 ◽  
Author(s):  
Hira ◽  
Aysha Daud ◽  
Sonia Zulfiqar ◽  
Philips O. Agboola ◽  
Imran Shakir ◽  
...  
Keyword(s):  
Chemical Technique ◽  
Wet Chemical ◽  
Wet Chemical Technique ◽  
Photocatalytic Applications

The Determination of Iron in Used Lubricating Oil

1971 ◽  
Vol 25 (6) ◽  
pp. 668-671 ◽  
Author(s):  
Gerald S. Golden
Keyword(s):  
Internal Standard ◽  
Rotating Disk ◽  
Lubricating Oil ◽  
X Ray ◽  
Chemical Technique ◽  
Used Lubricating Oil ◽  
Wet Chemical ◽  
Wet Chemical Technique ◽  
Instrumental Methods

Iron analyses performed on used gas turbine lubricating oil samples by several variations of rotating disk–spark emission spectrography, atomic absorptiometry, and x-ray fluorescence spectrometry are compared with a quantitative wet chemical technique. The results indicate that emission spectrography with a cobalt internal standard, atomic absorptiometry with a nitrous oxide–acetylene flame, and x-ray fluorescence, both dispersive and nondispersive, are the most reliable instrumental methods. The iron contained in the samples exists primarily as particulates 1 µ or less in diameter.

Preparation and characterization of flexible lithium iron phosphate/graphene/cellulose electrode for lithium ion batteries

2018 ◽  
Vol 512 ◽  
pp. 398-403 ◽  
Author(s):  
Yan Wang ◽  
Zhen-yu He ◽  
Yao-xuan Wang ◽  
Cong Fan ◽  
Chen-ren-lang Liu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Iron Phosphate ◽  
Lithium Ion ◽  
Iron Phosphate
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