Formation and characterization of a new (LixAg1 − x)2SO4 (x ≤ 0.5) phase

Tao, Shanwen; Liu, X.Q.; Peng, Dingkun; Meng, Guangyao

doi:10.1016/s0167-577x(97)00130-4

Cited by 7 publications

(4 citation statements)

References 8 publications

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“…The observed mode frequencies for LiAgSO 4 and Ag 2 SO 4 are ν 1 , ν 2 , ν 3 and ν 4 which are basically from sulphate -ion intermolecular vibrations. Furthermore, the mode frequencies of solid phases agree with previous calculations [18][19][20][21][22][23][24][25]. This confirms our synthesis and structure of the LiAgSO 4 and Ag 2 SO 4 .…”

Section: Raman Spectroscopy and Phase Transitionsupporting

confidence: 91%

“…For the equimolar compositions of the two phases the electrical conductivity and the diffusion coefficients of Li+, Ag+ and Na+ at 823K are nearly the same for the two abundant cations, while they are considerably smaller for the cation that is present at low concentration. Additional evidence that the two abundant cations have nearly the same mobility in the bcc phase is obtained from a trans-port number study for (Li, Ag) 2 SO 4 [21][22][23][24].…”

Section: Introductionmentioning

confidence: 94%

“…The peak at 420.9 0 C in Ag 2 SO 4 may due to the phase transition of β-Ag 2 SO 4 particles to α-Ag 2 SO 4 on heating. On heating, the excess heat flow at the structural transition was recorded as DSC signal by S.W.Tao et al noticed two small anomalies at 427.7C and 567.9 0 C. It was found that the anomaly depended on the turning temperature at which a cooling run was changed to a heating run [22].…”

Section: Differential Scanning Calorimetrymentioning

confidence: 99%

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Thermal and spectroscopy studies of Ag2SO4 and LiAgSO4

Rao¹,

Rajesh²

2013

IOSR-JAP

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A comparative study is conducted on the structure, electronic and spectroscopic properties of Ag 2 SO 4 and LiAgSO 4 . Both the sulphates crystallise in an orthorhombic structure with the same space group of Fddd (70). A red shift in Raman modes indicates the stiffness of the crystal Ag 2 SO 4 over LiAgSO 4 . From ESR, it is observed that these sulphates has Mn 2+ impurities leading to the g av = 2.1040 at a field of 3255 G. This indicates that the Mn 2+ ions have an environment close to octahedral symmetry. The g value corresponding to Ag 2 SO 4 is 2.3005. The endothermic peaks in LiAgSO 4 at 388.8 and 420 0 C are due to the formation of BCC structure of LiAgSO 4 . The peak at 420.9 0 C in Ag 2 SO 4 may be due to the phase transition of β-Ag 2 SO 4 particles to α-Ag 2 SO 4 on heating.

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Section: Raman Spectroscopy and Phase Transitionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 94%

Section: Differential Scanning Calorimetrymentioning

confidence: 99%

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Thermal and spectroscopy studies of Ag2SO4 and LiAgSO4

Rao¹,

Rajesh²

2013

IOSR-JAP

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“…We also found that some halides, e.g. NaC1 based composite, showed both proton and oxygen ionic conduction in the temperature range of 500 -750 ~ and a current density of several tens mA in H2/O2 fuel cells has been demonstrated [15].…”

mentioning

confidence: 63%

New solid state fuel cells - green power source for 21st century

Meng

Wanyu

Peng

1998

Ionics

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Abstract. The exhaustion of the major fossil energy sources on earth in near future and the serious environmental pollution from the fuel combustion processes in the presently applied technologies are the most important problems of modem society. The sustainable development of mankind requests strongly to develop "green" power devices characterized by high fuel energy conversion efficiency, less pollution to the environment and convenience to use. 9 Fabrication techniques -soft chemistry routes 9 What to do for coming up with "green" power plants ?

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