Low-temperature hydrogen desorption and the structural properties of spark discharge generated Mg nanoparticles
► Spark discharge generated Mg nanoparticles form large-scale agglomerated structures. ► The small size of MgH 2 nanoparticles leads to low temperature hydrogen desorption. ► The hydrogen desorption is characterized by a wide range of apparent activation energies. ► Pd nanoparticles added in-situ by...
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| Veröffentlicht in: | Acta materialia 2011-05, Vol.59 (8), p.3070-3080 |
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| container_issue | 8 |
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| container_title | Acta materialia |
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| creator | Vons, V.A. Anastasopol, A. Legerstee, W.J. Mulder, F.M. Eijt, S.W.H. Schmidt-Ott, A. |
| description | ► Spark discharge generated Mg nanoparticles form large-scale agglomerated structures. ► The small size of MgH
2 nanoparticles leads to low temperature hydrogen desorption. ► The hydrogen desorption is characterized by a wide range of apparent activation energies. ► Pd nanoparticles added in-situ by a second spark generator induce faster kinetics. ► Spark discharge generation shows great promise to create metal hydride nanocomposites.
Mg nanoparticles were synthesized using spark discharge, resulting in large-scale structures of agglomerated nanoparticles with primary particle sizes of ∼10
nm, surrounded by MgO shells 1–2
nm thick. Thermal hydrogen desorption starts at remarkably low temperatures of ∼350
K, related to the small sizes of particles, and extends over a broad temperature range to beyond 700
K, caused by the presence of oxide shells acting as activation barriers. The hydrogen sorption kinetics is increased significantly by adding Pd nanoparticles in situ during synthesis, showing the versatility of spark discharge generation for the production of metal hydride nanocomposites. |
| doi_str_mv | 10.1016/j.actamat.2011.01.047 |
| format | Article |
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2 nanoparticles leads to low temperature hydrogen desorption. ► The hydrogen desorption is characterized by a wide range of apparent activation energies. ► Pd nanoparticles added in-situ by a second spark generator induce faster kinetics. ► Spark discharge generation shows great promise to create metal hydride nanocomposites.
Mg nanoparticles were synthesized using spark discharge, resulting in large-scale structures of agglomerated nanoparticles with primary particle sizes of ∼10
nm, surrounded by MgO shells 1–2
nm thick. Thermal hydrogen desorption starts at remarkably low temperatures of ∼350
K, related to the small sizes of particles, and extends over a broad temperature range to beyond 700
K, caused by the presence of oxide shells acting as activation barriers. The hydrogen sorption kinetics is increased significantly by adding Pd nanoparticles in situ during synthesis, showing the versatility of spark discharge generation for the production of metal hydride nanocomposites.</description><identifier>ISSN: 1359-6454</identifier><identifier>EISSN: 1873-2453</identifier><identifier>DOI: 10.1016/j.actamat.2011.01.047</identifier><language>eng</language><publisher>Elsevier Ltd</publisher><subject>Agglomeration ; Desorption ; Hydrogen storage ; Magnesium ; Metal hydrides ; Nanoparticles ; Palladium ; Shells ; Spark discharge ; X-ray diffraction</subject><ispartof>Acta materialia, 2011-05, Vol.59 (8), p.3070-3080</ispartof><rights>2011 Acta Materialia Inc.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c407t-7174aeddec3617d700b46c30bac818f7f5f9782541f8a86934325954c3757ee43</citedby><cites>FETCH-LOGICAL-c407t-7174aeddec3617d700b46c30bac818f7f5f9782541f8a86934325954c3757ee43</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.actamat.2011.01.047$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3541,27915,27916,45986</link.rule.ids></links><search><creatorcontrib>Vons, V.A.</creatorcontrib><creatorcontrib>Anastasopol, A.</creatorcontrib><creatorcontrib>Legerstee, W.J.</creatorcontrib><creatorcontrib>Mulder, F.M.</creatorcontrib><creatorcontrib>Eijt, S.W.H.</creatorcontrib><creatorcontrib>Schmidt-Ott, A.</creatorcontrib><title>Low-temperature hydrogen desorption and the structural properties of spark discharge generated Mg nanoparticles</title><title>Acta materialia</title><description>► Spark discharge generated Mg nanoparticles form large-scale agglomerated structures. ► The small size of MgH
2 nanoparticles leads to low temperature hydrogen desorption. ► The hydrogen desorption is characterized by a wide range of apparent activation energies. ► Pd nanoparticles added in-situ by a second spark generator induce faster kinetics. ► Spark discharge generation shows great promise to create metal hydride nanocomposites.
Mg nanoparticles were synthesized using spark discharge, resulting in large-scale structures of agglomerated nanoparticles with primary particle sizes of ∼10
nm, surrounded by MgO shells 1–2
nm thick. Thermal hydrogen desorption starts at remarkably low temperatures of ∼350
K, related to the small sizes of particles, and extends over a broad temperature range to beyond 700
K, caused by the presence of oxide shells acting as activation barriers. The hydrogen sorption kinetics is increased significantly by adding Pd nanoparticles in situ during synthesis, showing the versatility of spark discharge generation for the production of metal hydride nanocomposites.</description><subject>Agglomeration</subject><subject>Desorption</subject><subject>Hydrogen storage</subject><subject>Magnesium</subject><subject>Metal hydrides</subject><subject>Nanoparticles</subject><subject>Palladium</subject><subject>Shells</subject><subject>Spark discharge</subject><subject>X-ray diffraction</subject><issn>1359-6454</issn><issn>1873-2453</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNqFkE9LAzEQxYMoWKsfQcjN09Zkk2x2TyLFf1DxoueQJrNt6u5mTbJKv70p9S4MzMC832PmIXRNyYISWt3uFtok3eu0KAmlC5KLyxM0o7VkRckFO80zE01RccHP0UWMO0JoKTmZIb_yP0WCfoSg0xQAb_c2-A0M2EL0YUzOD1gPFqct4JjCZLJKd3gMPiPJQcS-xXHU4RNbF81Whw3gzB_8wOLXDR704PM-OdNBvERnre4iXP31Ofp4fHhfPhert6eX5f2qMJzIVEgquQZrwbCKSisJWfPKMLLWpqZ1K1vRNrIuBadtreuqYZyVohHcMCkkAGdzdHP0zYd-TRCT6vN10HV6AD9FlZmaVUyWWSmOShN8jAFaNQbX67BXlKhDvmqn_vJVh3wVycVl5u6OHOQ3vh0EFY2DwYB1AUxS1rt_HH4BZ26I2A</recordid><startdate>20110501</startdate><enddate>20110501</enddate><creator>Vons, V.A.</creator><creator>Anastasopol, A.</creator><creator>Legerstee, W.J.</creator><creator>Mulder, F.M.</creator><creator>Eijt, S.W.H.</creator><creator>Schmidt-Ott, A.</creator><general>Elsevier Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20110501</creationdate><title>Low-temperature hydrogen desorption and the structural properties of spark discharge generated Mg nanoparticles</title><author>Vons, V.A. ; Anastasopol, A. ; Legerstee, W.J. ; Mulder, F.M. ; Eijt, S.W.H. ; Schmidt-Ott, A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c407t-7174aeddec3617d700b46c30bac818f7f5f9782541f8a86934325954c3757ee43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Agglomeration</topic><topic>Desorption</topic><topic>Hydrogen storage</topic><topic>Magnesium</topic><topic>Metal hydrides</topic><topic>Nanoparticles</topic><topic>Palladium</topic><topic>Shells</topic><topic>Spark discharge</topic><topic>X-ray diffraction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Vons, V.A.</creatorcontrib><creatorcontrib>Anastasopol, A.</creatorcontrib><creatorcontrib>Legerstee, W.J.</creatorcontrib><creatorcontrib>Mulder, F.M.</creatorcontrib><creatorcontrib>Eijt, S.W.H.</creatorcontrib><creatorcontrib>Schmidt-Ott, A.</creatorcontrib><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Acta materialia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Vons, V.A.</au><au>Anastasopol, A.</au><au>Legerstee, W.J.</au><au>Mulder, F.M.</au><au>Eijt, S.W.H.</au><au>Schmidt-Ott, A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Low-temperature hydrogen desorption and the structural properties of spark discharge generated Mg nanoparticles</atitle><jtitle>Acta materialia</jtitle><date>2011-05-01</date><risdate>2011</risdate><volume>59</volume><issue>8</issue><spage>3070</spage><epage>3080</epage><pages>3070-3080</pages><issn>1359-6454</issn><eissn>1873-2453</eissn><abstract>► Spark discharge generated Mg nanoparticles form large-scale agglomerated structures. ► The small size of MgH
2 nanoparticles leads to low temperature hydrogen desorption. ► The hydrogen desorption is characterized by a wide range of apparent activation energies. ► Pd nanoparticles added in-situ by a second spark generator induce faster kinetics. ► Spark discharge generation shows great promise to create metal hydride nanocomposites.
Mg nanoparticles were synthesized using spark discharge, resulting in large-scale structures of agglomerated nanoparticles with primary particle sizes of ∼10
nm, surrounded by MgO shells 1–2
nm thick. Thermal hydrogen desorption starts at remarkably low temperatures of ∼350
K, related to the small sizes of particles, and extends over a broad temperature range to beyond 700
K, caused by the presence of oxide shells acting as activation barriers. The hydrogen sorption kinetics is increased significantly by adding Pd nanoparticles in situ during synthesis, showing the versatility of spark discharge generation for the production of metal hydride nanocomposites.</abstract><pub>Elsevier Ltd</pub><doi>10.1016/j.actamat.2011.01.047</doi><tpages>11</tpages></addata></record> |
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| issn | 1359-6454 1873-2453 |
| language | eng |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Agglomeration Desorption Hydrogen storage Magnesium Metal hydrides Nanoparticles Palladium Shells Spark discharge X-ray diffraction |
| title | Low-temperature hydrogen desorption and the structural properties of spark discharge generated Mg nanoparticles |
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