Synthesis and Characterization of Manganese Vanadium Oxides as Cathodes in Lithium Batteries

1999 ◽  
Vol 581 ◽  
Author(s):  
Fan Zhang ◽  
Peter Zavalij ◽  
M. Stanley Whittingham
Keyword(s):  
Hydrothermal Method ◽  
Electron Microprobe ◽  
Lithium Batteries ◽  
Electrochemical Behavior ◽  
Vanadium Oxides ◽  
Synthesis And Characterization ◽  
Nano Materials ◽  
Monoclinic Structure ◽  
Hydrothermal Reactions

ABSTRACTOur research on new cathode nano-materials for advanced lithium batteries has focused on the hydrothermal method for synthesis. We have synthesized two novel manganese vanadium oxides using the hydrothermal reactions of vanadium (V) pentoxide, [N(CH3)4]MnO4, and MnSO4 with an organic templating cation at 165°C. The 6-type [N(CH3)4]zMnyV2O5*nH2O has a monoclinic structure, a= 11.66(2)Å, b=3.610(9)Å, c= 13.91(4)Å, β= 108.8(2)°. It has a disordered V2O5 double layer and the Mn and N(CH3)4 ions reside between the layers. The γ-type MnV2O5 is orthorhombic, belongs to the space group Pnma, a=9.7585(2) Å, b=3.5825(l)Å, c= 11.2653(2) Å. These compounds were also characterized by electron microprobe, FTIR and TGA. They reacted readily with lithium, and their electrochemical behavior in lithium cells was determined.

Synthesis and Characterization of Nickel and Manganese Vanadium Oxides

1998 ◽  
Vol 548 ◽  
Author(s):  
Fan Zhang ◽  
Peter Zavalij ◽  
M. Stanley Whittingham
Keyword(s):  
Electron Microprobe ◽  
Electrochemical Behavior ◽  
Vanadium Oxides ◽  
Synthesis And Characterization ◽  
Monoclinic Structure ◽  
Hydrothermal Reactions ◽  
Lithium Cells

ABSTRACTWe have synthesized novel nickel and manganese vanadium oxides using the hydrothermal reactions of vanadium(V) pentoxide, Ni(CH3COO)2, and MnSO4 with an organic templating cation at 165°C. The [NH2(CH2)2NH2]2NiV6O14 has a monoclinic structure. It has some disordered V and 0 atoms in the V6014 layer, which appear to be very close to each other with occupation factor around 0.5. The disordered model was decomposed for two ordered configurations, which differ in the stacking of the layers. The (Mn+2)6(Mn+3)l−2/3z(OH)3(1−Z)(VO4)3[(VO4)l−2z(v207)z] (Z≈0. 1) phase has a hexagonal pipe morphology. These compounds were also characterized by electron microprobe, FTIR and TGA. They reacted readily with lithium, and their electrochemical behavior in lithium cells was determined.

The Hydrothermal Synthesis and Characterization of New Organically Templated Layered Vanadium Oxides by Methylamine

1997 ◽  
Vol 497 ◽  
Author(s):  
Rongji Chen ◽  
Peter Y. Zavalij ◽  
M. Stanley Whittingham
Keyword(s):  
Catalytic Activity ◽  
Hydrothermal Synthesis ◽  
Lithium Batteries ◽  
Hydrothermal Reaction ◽  
Vanadium Oxides ◽  
Synthesis And Characterization ◽  
X Ray ◽  
Secondary Lithium Batteries ◽  
Initial Ph

ABSTRACTThe hydrothermal reaction of vanadium pentoxide with methylamine leads to a series of new layered vanadium oxides by using different acids to adjust the initial pH. The structure of these layered vanadium oxides was established by X-ray single crystal and powder diffraction. The new phases were also characterized by TGA and FTIR. The oxidation state of vanadium was determined. These materials are expected to exhibit catalytic activity and may be of interest as cathode materials for secondary lithium batteries.

Synthesis and characterization of LiNi0.8Co0.2O2 prepared by a combustion solution method for lithium batteries

2004 ◽  
Vol 132 (1-2) ◽  
pp. 213-218 ◽  
Author(s):  
Padikkasu Periasamy ◽  
Hyun-Soo Kim ◽  
Seong-Hwan Na ◽  
Seong-In Moon ◽  
Joong-Cheol Lee
Keyword(s):  
Lithium Batteries ◽  
Solution Method ◽  
Synthesis And Characterization

Synthesis and characterization of LiNiO2 compounds as cathodes for rechargeable lithium batteries

1998 ◽  
Vol 76 (2) ◽  
pp. 141-146 ◽  
Author(s):  
G.X. Wang ◽  
S. Zhong ◽  
D.H. Bradhurst ◽  
S.X. Dou ◽  
H.K. Liu
Keyword(s):  
Lithium Batteries ◽  
Synthesis And Characterization ◽  
Rechargeable Lithium Batteries

scholarly journals Synthesis and Characterization of Mesoporous NaX Zeolite from Kaolin Loading of Soursop Leaves Extract (Annona muricata Linn.)

ALCHEMY ◽  
2018 ◽  
Vol 5 (3) ◽  
pp. 100
Author(s):  
Ilmin Nasifah ◽  
Susi Nurul Khalifah ◽  
Elok Kamilah Hayati
Keyword(s):  
Hydrothermal Method ◽  
Ethanol Extract ◽  
Nitrogen Adsorption ◽  
Synthesis And Characterization ◽  
Annona Muricata ◽  
Nax Zeolite ◽  
Loading Process ◽  
Uniform Particles ◽  
Calcined Kaolin

<p>Mesoporous NaX zeolite has been synthesized from calcined kaolin with the addition of 5M NaOH and CTABr surfactant as mesoporous template by hydrothermal method. The result of synthesis was used as anticancer loading agent of ethanol extract soursop leaves. Characteristics of zeolite were studied by XRD, IR spestroscopy, Nitrogen Adsorption and SEManalysis. The mesoporous NaX zeolite has been formed with mixing of A, Y, kaolinite and quartz phases. The surface of zeolite particles has changed from amorphous to regular and uniform particles. The pores of NaX zeolite belongs to mesoporous type with size 6.13 nm. Loading process of soursop leaves extract on zeolite decreased intensity and crystallinity of zeolite peaks. The new absorption in soursop leaves extract loaded on zeolite spectra was detected at 2928.174 cm<sup>-1</sup>. The surface of zeolite seen to be compact and irregular.</p>

Sign in / Sign up

Export Citation Format

Share Document