Coulometric Assay of Deuterium Loading Levels in Palladium Electrodes
We report in this paper measurements of hydrogen (H) and deuterium (D) loading stoichiometries in Pd electrodes. We accomplished these analyses using an electrochemical method developed for in situ determination of palladium deuteride stoichiometries. The electrochemical method quantifies the amount...
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creator | Lawson, Del R Tierney, Michael J Cheng, I F Van Dyke, Leon S Espenscheid, M W Martin, Charles R |
description | We report in this paper measurements of hydrogen (H) and deuterium (D) loading stoichiometries in Pd electrodes. We accomplished these analyses using an electrochemical method developed for in situ determination of palladium deuteride stoichiometries. The electrochemical method quantifies the amount of deuterium incorporated into the metal lattice by collecting the charge released during the potential controlled discharge of deuterium loaded Pd electrodes. In addition, ex situ gravimetric analyses were used to confirm electrochemically measured D/Pd atom ratios. Gravimetric analyses were also used in cases where the diameter of the Pd electrode precluded the relatively slow diffusion-limited electrochemical discharge method. A variety of electrolytic factors were studied to determine what conditions, if any, promote the greatest absorption of deuterium into the Pd lattice. We observed loading values of 0.73 + or - 0.02 deuterium atoms per Pd lattice atom under all the electrolytic conditions studied in LiOD and D2SO4 solutions. As found in previous studies, H/Pd values were approximately 10% higher than D/Pd values. |
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We accomplished these analyses using an electrochemical method developed for in situ determination of palladium deuteride stoichiometries. The electrochemical method quantifies the amount of deuterium incorporated into the metal lattice by collecting the charge released during the potential controlled discharge of deuterium loaded Pd electrodes. In addition, ex situ gravimetric analyses were used to confirm electrochemically measured D/Pd atom ratios. Gravimetric analyses were also used in cases where the diameter of the Pd electrode precluded the relatively slow diffusion-limited electrochemical discharge method. A variety of electrolytic factors were studied to determine what conditions, if any, promote the greatest absorption of deuterium into the Pd lattice. We observed loading values of 0.73 + or - 0.02 deuterium atoms per Pd lattice atom under all the electrolytic conditions studied in LiOD and D2SO4 solutions. As found in previous studies, H/Pd values were approximately 10% higher than D/Pd values.</description><language>eng</language><subject>ABSORPTION ; ASSAYING ; ATOMS ; CONTROL ; COULOMETERS ; DEUTERIUM ; Electrical and Electronic Equipment ; ELECTROCHEMISTRY ; ELECTRODES ; ELECTROLYSIS ; GRAVIMETRY ; HYDROGEN ; MEASUREMENT ; PALLADIUM ; RATIOS ; STOICHIOMETRY ; WUNR627838</subject><creationdate>1990</creationdate><rights>Approved for public release; distribution is unlimited.</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,776,881,27544,27545</link.rule.ids><linktorsrc>$$Uhttps://apps.dtic.mil/sti/citations/ADA229759$$EView_record_in_DTIC$$FView_record_in_$$GDTIC$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Lawson, Del R</creatorcontrib><creatorcontrib>Tierney, Michael J</creatorcontrib><creatorcontrib>Cheng, I F</creatorcontrib><creatorcontrib>Van Dyke, Leon S</creatorcontrib><creatorcontrib>Espenscheid, M W</creatorcontrib><creatorcontrib>Martin, Charles R</creatorcontrib><creatorcontrib>COLORADO STATE UNIV FORT COLLINS DEPT OF CHEMISTRY</creatorcontrib><title>Coulometric Assay of Deuterium Loading Levels in Palladium Electrodes</title><description>We report in this paper measurements of hydrogen (H) and deuterium (D) loading stoichiometries in Pd electrodes. We accomplished these analyses using an electrochemical method developed for in situ determination of palladium deuteride stoichiometries. The electrochemical method quantifies the amount of deuterium incorporated into the metal lattice by collecting the charge released during the potential controlled discharge of deuterium loaded Pd electrodes. In addition, ex situ gravimetric analyses were used to confirm electrochemically measured D/Pd atom ratios. Gravimetric analyses were also used in cases where the diameter of the Pd electrode precluded the relatively slow diffusion-limited electrochemical discharge method. A variety of electrolytic factors were studied to determine what conditions, if any, promote the greatest absorption of deuterium into the Pd lattice. We observed loading values of 0.73 + or - 0.02 deuterium atoms per Pd lattice atom under all the electrolytic conditions studied in LiOD and D2SO4 solutions. As found in previous studies, H/Pd values were approximately 10% higher than D/Pd values.</description><subject>ABSORPTION</subject><subject>ASSAYING</subject><subject>ATOMS</subject><subject>CONTROL</subject><subject>COULOMETERS</subject><subject>DEUTERIUM</subject><subject>Electrical and Electronic Equipment</subject><subject>ELECTROCHEMISTRY</subject><subject>ELECTRODES</subject><subject>ELECTROLYSIS</subject><subject>GRAVIMETRY</subject><subject>HYDROGEN</subject><subject>MEASUREMENT</subject><subject>PALLADIUM</subject><subject>RATIOS</subject><subject>STOICHIOMETRY</subject><subject>WUNR627838</subject><fulltext>true</fulltext><rsrctype>report</rsrctype><creationdate>1990</creationdate><recordtype>report</recordtype><sourceid>1RU</sourceid><recordid>eNrjZHB1zi_Nyc9NLSnKTFZwLC5OrFTIT1NwSS0tSS3KLM1V8MlPTMnMS1fwSS1LzSlWyMxTCEjMyQGKAeVcc1KTS4ryU1KLeRhY0xJzilN5oTQ3g4yba4izh25KSWZyfHFJZl5qSbyji6ORkaW5qaUxAWkA1h4wHw</recordid><startdate>19901206</startdate><enddate>19901206</enddate><creator>Lawson, Del R</creator><creator>Tierney, Michael J</creator><creator>Cheng, I F</creator><creator>Van Dyke, Leon S</creator><creator>Espenscheid, M W</creator><creator>Martin, Charles R</creator><scope>1RU</scope><scope>BHM</scope></search><sort><creationdate>19901206</creationdate><title>Coulometric Assay of Deuterium Loading Levels in Palladium Electrodes</title><author>Lawson, Del R ; Tierney, Michael J ; Cheng, I F ; Van Dyke, Leon S ; Espenscheid, M W ; Martin, Charles R</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-dtic_stinet_ADA2297593</frbrgroupid><rsrctype>reports</rsrctype><prefilter>reports</prefilter><language>eng</language><creationdate>1990</creationdate><topic>ABSORPTION</topic><topic>ASSAYING</topic><topic>ATOMS</topic><topic>CONTROL</topic><topic>COULOMETERS</topic><topic>DEUTERIUM</topic><topic>Electrical and Electronic Equipment</topic><topic>ELECTROCHEMISTRY</topic><topic>ELECTRODES</topic><topic>ELECTROLYSIS</topic><topic>GRAVIMETRY</topic><topic>HYDROGEN</topic><topic>MEASUREMENT</topic><topic>PALLADIUM</topic><topic>RATIOS</topic><topic>STOICHIOMETRY</topic><topic>WUNR627838</topic><toplevel>online_resources</toplevel><creatorcontrib>Lawson, Del R</creatorcontrib><creatorcontrib>Tierney, Michael J</creatorcontrib><creatorcontrib>Cheng, I F</creatorcontrib><creatorcontrib>Van Dyke, Leon S</creatorcontrib><creatorcontrib>Espenscheid, M W</creatorcontrib><creatorcontrib>Martin, Charles R</creatorcontrib><creatorcontrib>COLORADO STATE UNIV FORT COLLINS DEPT OF CHEMISTRY</creatorcontrib><collection>DTIC Technical Reports</collection><collection>DTIC STINET</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Lawson, Del R</au><au>Tierney, Michael J</au><au>Cheng, I F</au><au>Van Dyke, Leon S</au><au>Espenscheid, M W</au><au>Martin, Charles R</au><aucorp>COLORADO STATE UNIV FORT COLLINS DEPT OF CHEMISTRY</aucorp><format>book</format><genre>unknown</genre><ristype>RPRT</ristype><btitle>Coulometric Assay of Deuterium Loading Levels in Palladium Electrodes</btitle><date>1990-12-06</date><risdate>1990</risdate><abstract>We report in this paper measurements of hydrogen (H) and deuterium (D) loading stoichiometries in Pd electrodes. We accomplished these analyses using an electrochemical method developed for in situ determination of palladium deuteride stoichiometries. The electrochemical method quantifies the amount of deuterium incorporated into the metal lattice by collecting the charge released during the potential controlled discharge of deuterium loaded Pd electrodes. In addition, ex situ gravimetric analyses were used to confirm electrochemically measured D/Pd atom ratios. Gravimetric analyses were also used in cases where the diameter of the Pd electrode precluded the relatively slow diffusion-limited electrochemical discharge method. A variety of electrolytic factors were studied to determine what conditions, if any, promote the greatest absorption of deuterium into the Pd lattice. We observed loading values of 0.73 + or - 0.02 deuterium atoms per Pd lattice atom under all the electrolytic conditions studied in LiOD and D2SO4 solutions. As found in previous studies, H/Pd values were approximately 10% higher than D/Pd values.</abstract><oa>free_for_read</oa></addata></record> |
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subjects | ABSORPTION ASSAYING ATOMS CONTROL COULOMETERS DEUTERIUM Electrical and Electronic Equipment ELECTROCHEMISTRY ELECTRODES ELECTROLYSIS GRAVIMETRY HYDROGEN MEASUREMENT PALLADIUM RATIOS STOICHIOMETRY WUNR627838 |
title | Coulometric Assay of Deuterium Loading Levels in Palladium Electrodes |
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