Electrochemical and neutron diffraction measurements of PdD sub x cathodes [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy, 1991.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: Pages: (11 pages) : digital, PDF file
Additional Creators:: Argonne National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

Potentiometric and in-situ neutron diffraction measurements have been carried out on PdDₓ cathodes in LiOD-saturated D₂O solution. Open-circuit potentials of the PdDₓ electrode after interruption of high-intensity cathodic currents (300--500 mA/cm²) showed a more negative potential (ε = 1010 mV, measured against a Hg/HgO reference electrode) than that expected from the literature. The anomalous potentials were observed for about 10--20 min after current interruption at x > 0.7 concentrations of deuterium. This phenomenon may indicate a metastable phase of the Pd-D system, which may be detected by neutron diffraction. In-situ neutron diffraction measurements, so far, have indicated only the evolution of the known α and β phases of PdDₓ. Successful neutron diffraction measurements in electrochemical cells suggest the viability of this technique for in-situ investigations of metal-hydride battery electrodes in experiments when heavy-water electrolyte is used to model the MH₂/H₂O electrode.

Report Numbers:

E 1.99:anl/cp-73231
E 1.99: conf-911047--11
conf-911047--11
anl/cp-73231

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Note:

Published through SciTech Connect.
01/01/1991.
"anl/cp-73231"
" conf-911047--11"
"DE92005236"
180. meeting of the Electrochemical Society, Phoenix, AZ (United States), 13-18 Oct 1991.
Richardson, J.W. Jr.; Rotella, F.J.; Redey, L.; Myles, K.M.; Kleb, R.; Felcher, G.P.; Hitterman, R.L.

Funding Information:

W-31109-ENG-38

View MARC record | catkey: 14101117