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Lead deficiency and hydrogen content in battery electrode. beta. -PbO/sub 2/

Conference ·
OSTI ID:6458041
Neutron powder-diffraction data have been collected for ..beta..-PbO/sub 2/ obtained from lead-acid battery plates cycled in H/sub 2/SO/sub 4/ and D/sub 2/SO/sub 4/. A comparison of total scattering cross sections for the hydrogenated sample versus the deuterated sample indicates a bulk hydrogen concentration of 0.21 H atoms per PbO/sub 2/ unit. Rietveld refinements of the data yield the expected tetragonal ..beta..-PbO/sub 2/ structure, P4/sub 2//mnm, with a 3 to 5% vacancy concentration on the lead sites. These results suggest that at least part of the hydrogen is incorporated into the ..beta..-PbO/sub 2/ crystalline lattice.
Research Organization:
Argonne National Lab., IL (USA)
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
6458041
Report Number(s):
CONF-820508-10; ON: DE83010812
Country of Publication:
United States
Language:
English