Dissolution Rate of Noble Metals for Electrochemical Recycle in Polymer Electrolyte Fuel Cells
An electrochemical recycling process of the noble metal such as Pt and Ru from the membrane electrode assemblies (MEAs) in fuel cells was investigated for the environment-friendly process without aqua regia. The dissolution rate of Pt in HCl solution was about 50 times as fast as those in H2SO4 and...
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| Veröffentlicht in: | Denki kagaku oyobi kōgyō butsuri kagaku 2012/11/05, Vol.80(11), pp.898-903 |
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| container_title | Denki kagaku oyobi kōgyō butsuri kagaku |
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| creator | SHIROISHI, Hidenobu HAYASHI, Shinjiro YONEKAWA, Minoru SHOJI, Ryo KATO, Itaru KUNIMATSU, Masayuki |
| description | An electrochemical recycling process of the noble metal such as Pt and Ru from the membrane electrode assemblies (MEAs) in fuel cells was investigated for the environment-friendly process without aqua regia. The dissolution rate of Pt in HCl solution was about 50 times as fast as those in H2SO4 and HClO4 solutions. The Pt dissolution rate increased linearly with HCl concentration. Pt dissolution under fluctuating potential using saw-tooth wave is 15 times faster than that under constant potentials. The electrochemical dissolution method can also be applied to the dissolution of Pt and Ru in the PtRu catalysts. The chemical methods using aqua regia, HCl-H2O2 mixed solution, and HCl only were also investigated for the comparison as the electrochemical methods. The Pt dissolution rate decreased according to the order of aqua regia > 11.3 M HCl-0.36 M H2O2 > 1 M HCl-10.3 M H2O2 > 1 M HCl. The vaporization rate of oxidants (NOCl and Cl2) from aqua regia at 333 K was 40 times as fast as that at 298 K by a spectrochemical method. |
| doi_str_mv | 10.5796/electrochemistry.80.898 |
| format | Article |
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The dissolution rate of Pt in HCl solution was about 50 times as fast as those in H2SO4 and HClO4 solutions. The Pt dissolution rate increased linearly with HCl concentration. Pt dissolution under fluctuating potential using saw-tooth wave is 15 times faster than that under constant potentials. The electrochemical dissolution method can also be applied to the dissolution of Pt and Ru in the PtRu catalysts. The chemical methods using aqua regia, HCl-H2O2 mixed solution, and HCl only were also investigated for the comparison as the electrochemical methods. The Pt dissolution rate decreased according to the order of aqua regia > 11.3 M HCl-0.36 M H2O2 > 1 M HCl-10.3 M H2O2 > 1 M HCl. The vaporization rate of oxidants (NOCl and Cl2) from aqua regia at 333 K was 40 times as fast as that at 298 K by a spectrochemical method.</description><identifier>ISSN: 1344-3542</identifier><identifier>EISSN: 2186-2451</identifier><identifier>DOI: 10.5796/electrochemistry.80.898</identifier><language>eng</language><publisher>Tokyo: The Electrochemical Society of Japan</publisher><subject>Dissolution ; Dissolution of Noble Metal ; Electrodes ; Electrolytes ; Fluctuation ; Fuel Cell ; Fuel cells ; Noble metals ; Platinum ; Recycle ; Vaporization</subject><ispartof>Electrochemistry, 2012/11/05, Vol.80(11), pp.898-903</ispartof><rights>2012 The Electrochemical Society of Japan</rights><rights>Copyright Japan Science and Technology Agency 2012</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c621t-49bbcf4751c2ef3bbfa8559808c42609c06c1181b4fe6b4cb59658c2e1afc43c3</citedby><cites>FETCH-LOGICAL-c621t-49bbcf4751c2ef3bbfa8559808c42609c06c1181b4fe6b4cb59658c2e1afc43c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,1877,27901,27902</link.rule.ids></links><search><creatorcontrib>SHIROISHI, Hidenobu</creatorcontrib><creatorcontrib>HAYASHI, Shinjiro</creatorcontrib><creatorcontrib>YONEKAWA, Minoru</creatorcontrib><creatorcontrib>SHOJI, Ryo</creatorcontrib><creatorcontrib>KATO, Itaru</creatorcontrib><creatorcontrib>KUNIMATSU, Masayuki</creatorcontrib><title>Dissolution Rate of Noble Metals for Electrochemical Recycle in Polymer Electrolyte Fuel Cells</title><title>Denki kagaku oyobi kōgyō butsuri kagaku</title><addtitle>Electrochemistry</addtitle><description>An electrochemical recycling process of the noble metal such as Pt and Ru from the membrane electrode assemblies (MEAs) in fuel cells was investigated for the environment-friendly process without aqua regia. The dissolution rate of Pt in HCl solution was about 50 times as fast as those in H2SO4 and HClO4 solutions. The Pt dissolution rate increased linearly with HCl concentration. Pt dissolution under fluctuating potential using saw-tooth wave is 15 times faster than that under constant potentials. The electrochemical dissolution method can also be applied to the dissolution of Pt and Ru in the PtRu catalysts. The chemical methods using aqua regia, HCl-H2O2 mixed solution, and HCl only were also investigated for the comparison as the electrochemical methods. The Pt dissolution rate decreased according to the order of aqua regia > 11.3 M HCl-0.36 M H2O2 > 1 M HCl-10.3 M H2O2 > 1 M HCl. The vaporization rate of oxidants (NOCl and Cl2) from aqua regia at 333 K was 40 times as fast as that at 298 K by a spectrochemical method.</description><subject>Dissolution</subject><subject>Dissolution of Noble Metal</subject><subject>Electrodes</subject><subject>Electrolytes</subject><subject>Fluctuation</subject><subject>Fuel Cell</subject><subject>Fuel cells</subject><subject>Noble metals</subject><subject>Platinum</subject><subject>Recycle</subject><subject>Vaporization</subject><issn>1344-3542</issn><issn>2186-2451</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNptkE1vEzEQhi0EElHb31BLXHrZ4O-1jyikBaktKIJrLa81phs569b2HvbfYwiKUNXLzOV53xk9CF1Sspa9UR8hgq85-Uc4jKXmZa3JWhv9Bq0Y1apjQtK3aEW5EB2Xgr1HF6XsCSGUGGWYWaGHz2MpKc51TBPeuQo4BXyfhgj4DqqLBYeU8fa_M95FvAO_-IaME_6e4nKAExKXVnE9Q8QbiLGco3ehlcDFv32Gfl5vf2y-dLffbr5uPt12XjFaO2GGwQfRS-oZBD4MwWkpjSbaC6aI8UR5SjUdRAA1CD9Io6RuLHXBC-75Gbo69j7l9DxDqbb58O0DN0Gai6VMcyWl5ryhH16g-zTnqX1nqeh7wXrT00b1R8rnVEqGYJ_yeHB5sZTYP-rtS_VWE9vUt-TumNyX6n7BKedyHZuzV3OU_p3MSrtlrf0E-0eXLUz8N8fDm14</recordid><startdate>20121101</startdate><enddate>20121101</enddate><creator>SHIROISHI, Hidenobu</creator><creator>HAYASHI, Shinjiro</creator><creator>YONEKAWA, Minoru</creator><creator>SHOJI, Ryo</creator><creator>KATO, Itaru</creator><creator>KUNIMATSU, Masayuki</creator><general>The Electrochemical Society of Japan</general><general>Japan Science and Technology Agency</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QL</scope><scope>7QO</scope><scope>7QQ</scope><scope>7SC</scope><scope>7SE</scope><scope>7SP</scope><scope>7SR</scope><scope>7TA</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>H8G</scope><scope>JG9</scope><scope>JQ2</scope><scope>KR7</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><scope>P64</scope></search><sort><creationdate>20121101</creationdate><title>Dissolution Rate of Noble Metals for Electrochemical Recycle in Polymer Electrolyte Fuel Cells</title><author>SHIROISHI, Hidenobu ; HAYASHI, Shinjiro ; YONEKAWA, Minoru ; SHOJI, Ryo ; KATO, Itaru ; KUNIMATSU, Masayuki</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c621t-49bbcf4751c2ef3bbfa8559808c42609c06c1181b4fe6b4cb59658c2e1afc43c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Dissolution</topic><topic>Dissolution of Noble Metal</topic><topic>Electrodes</topic><topic>Electrolytes</topic><topic>Fluctuation</topic><topic>Fuel Cell</topic><topic>Fuel cells</topic><topic>Noble metals</topic><topic>Platinum</topic><topic>Recycle</topic><topic>Vaporization</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>SHIROISHI, Hidenobu</creatorcontrib><creatorcontrib>HAYASHI, Shinjiro</creatorcontrib><creatorcontrib>YONEKAWA, Minoru</creatorcontrib><creatorcontrib>SHOJI, Ryo</creatorcontrib><creatorcontrib>KATO, Itaru</creatorcontrib><creatorcontrib>KUNIMATSU, Masayuki</creatorcontrib><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Biotechnology Research Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Computer and Information Systems Abstracts</collection><collection>Corrosion Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Materials Business File</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Copper Technical Reference Library</collection><collection>Materials Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Computer and Information Systems Abstracts Academic</collection><collection>Computer and Information Systems Abstracts Professional</collection><collection>Biotechnology and BioEngineering Abstracts</collection><jtitle>Denki kagaku oyobi kōgyō butsuri kagaku</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>SHIROISHI, Hidenobu</au><au>HAYASHI, Shinjiro</au><au>YONEKAWA, Minoru</au><au>SHOJI, Ryo</au><au>KATO, Itaru</au><au>KUNIMATSU, Masayuki</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Dissolution Rate of Noble Metals for Electrochemical Recycle in Polymer Electrolyte Fuel Cells</atitle><jtitle>Denki kagaku oyobi kōgyō butsuri kagaku</jtitle><addtitle>Electrochemistry</addtitle><date>2012-11-01</date><risdate>2012</risdate><volume>80</volume><issue>11</issue><spage>898</spage><epage>903</epage><pages>898-903</pages><issn>1344-3542</issn><eissn>2186-2451</eissn><abstract>An electrochemical recycling process of the noble metal such as Pt and Ru from the membrane electrode assemblies (MEAs) in fuel cells was investigated for the environment-friendly process without aqua regia. The dissolution rate of Pt in HCl solution was about 50 times as fast as those in H2SO4 and HClO4 solutions. The Pt dissolution rate increased linearly with HCl concentration. Pt dissolution under fluctuating potential using saw-tooth wave is 15 times faster than that under constant potentials. The electrochemical dissolution method can also be applied to the dissolution of Pt and Ru in the PtRu catalysts. The chemical methods using aqua regia, HCl-H2O2 mixed solution, and HCl only were also investigated for the comparison as the electrochemical methods. The Pt dissolution rate decreased according to the order of aqua regia > 11.3 M HCl-0.36 M H2O2 > 1 M HCl-10.3 M H2O2 > 1 M HCl. The vaporization rate of oxidants (NOCl and Cl2) from aqua regia at 333 K was 40 times as fast as that at 298 K by a spectrochemical method.</abstract><cop>Tokyo</cop><pub>The Electrochemical Society of Japan</pub><doi>10.5796/electrochemistry.80.898</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| source | J-STAGE (Japan Science & Technology Information Aggregator, Electronic) Freely Available Titles - Japanese; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Dissolution Dissolution of Noble Metal Electrodes Electrolytes Fluctuation Fuel Cell Fuel cells Noble metals Platinum Recycle Vaporization |
| title | Dissolution Rate of Noble Metals for Electrochemical Recycle in Polymer Electrolyte Fuel Cells |
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