Structure of PbSb/sub 2/O/sub 6/ and its relationship to the crystal chemistry of PbO/sub 2/ in antimonial lead-acid batteries
Journal Article
·
· J. Solid State Chem.; (United States)
The crystal structure of PbSb/sub 2/)/sub 6/, space group P anti 31m, a = 5.3006(1), c = 5.3792(1) A, V = 130.89(2) A, Z = 1, D/sub x/ = 6.936 g cm/sup -3/, has been refined at 295 K by Rietveld analysis of step-scan neutron powder diffraction data (lambda = 1.500 A, ..mu.. 0.179 cm/sup -1/): R/sub wp/ = 0.0614 for 2898 step intensities, R/sub B/ = 0.0141 for 150 reflections. The structure consists of gibbsitelike sheets of edge-sharing SbO/sub 6/ octahedra oriented perpendicular to the c-axis. These sheets alternate with layers of isolated PbO/sub 6/ octahedra positioned above and below the vacant sites in the adjacent (SbO/sub 6/)/sup 2 -/ layers. The SbO/sub 6/ octahedra have symmetry 32 and a bond length of 1.9904(4) A; the PbO/sub 6/ octahedra have symmetry anti 3m and a bond length of 2.5633(6) A. The properties of this structure and its relationship to the polymorphs of PbO/sub 2/ provide possible explanations for the well-known beneficial effect of antimony on the cycle life of lead-acid batteries.
- Research Organization:
- CSIRO, Port Melbourne, Australia
- OSTI ID:
- 5573836
- Journal Information:
- J. Solid State Chem.; (United States), Journal Name: J. Solid State Chem.; (United States) Vol. 71:1; ISSN JSSCB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
25 ENERGY STORAGE
250903 -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ANTIMONY COMPOUNDS
ANTIMONY OXIDES
BOND LENGTHS
CHALCOGENIDES
COHERENT SCATTERING
CRYSTAL STRUCTURE
DATA
DIFFRACTION
DIMENSIONS
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
EXPERIMENTAL DATA
INFORMATION
LATTICE PARAMETERS
LEAD COMPOUNDS
LEAD OXIDES
LEAD-ACID BATTERIES
LENGTH
NEUTRON DIFFRACTION
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
SCATTERING
SPACE GROUPS
250903 -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ANTIMONY COMPOUNDS
ANTIMONY OXIDES
BOND LENGTHS
CHALCOGENIDES
COHERENT SCATTERING
CRYSTAL STRUCTURE
DATA
DIFFRACTION
DIMENSIONS
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
EXPERIMENTAL DATA
INFORMATION
LATTICE PARAMETERS
LEAD COMPOUNDS
LEAD OXIDES
LEAD-ACID BATTERIES
LENGTH
NEUTRON DIFFRACTION
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
SCATTERING
SPACE GROUPS