Ag<sub>4</sub>V<sub>2</sub>O<sub>6</sub>F<sub>2</sub>: An Electrochemically Active and High Silver
Density Phase
Erin M. Sorensen
Heather K. Izumi
John T. Vaughey
Charlotte L. Stern
Kenneth R. Poeppelmeier
10.1021/ja050150f.s001
https://acs.figshare.com/articles/dataset/Ag_sub_4_sub_V_sub_2_sub_O_sub_6_sub_F_sub_2_sub_An_Electrochemically_Active_and_High_Silver_Density_Phase/3288073
Low-temperature hydrothermal techniques were used to synthesize single crystals of Ag<sub>4</sub>V<sub>2</sub>O<sub>6</sub>F<sub>2</sub>.
This previously unreported oxide fluoride phase was characterized by single-crystal X-ray diffraction and
IR spectroscopy and was also evaluated as a primary lithium battery cathode. Crystal data: monoclinic,
space group <i>P</i>2<sub>1</sub>/<i>n</i> (No. 14), with <i>a </i>= 8.4034(4) Å, <i>b </i>= 10.548(1) Å, <i>c </i>= 12.459(1) Å, β = 90.314(2)°, and
<i>Z</i> = 4. Ag<sub>4</sub>V<sub>2</sub>O<sub>6</sub>F<sub>2</sub> (SVOF) exhibits two characteristic regions within the discharge curve, an upper plateau
at 3.5 V, and a lower sloped region around 2.3 V from reduction of the vanadium oxide fluoride framework.
The material has a nominal capacity of 251 mAh/g, with 148 mAh/g above 3 V. The upper discharge plateau
at 3.5 V is nearly 300 mV over the silver reduction potential of the commercial primary battery material,
Ag<sub>2</sub>V<sub>4</sub>O<sub>11</sub> (SVO).
2005-05-04 00:00:00
lithium battery cathode
SVOF
4. Ag 4 V 2 O 6 F 2
Ag 2 V 4 O 11
material
region
vanadium oxide fluoride framework
Ag 4 V 2 O 6 F 2
mAh
plateau
3.5 V
crystal
SVO
oxide fluoride phase
IR
discharge