In Situ TEM Studies of Nanostructured Thermoelectric Materials: An Application to Mg‐Doped Zn4Sb3 Alloy
We demonstrate an advanced approach using state of the art in situ transmission electron microscopy (TEM) to understand the interplay between nanostructures and thermoelectric (TE) properties of high‐performance Mg‐doped Zn4Sb3 TE systems. By using the technique, microstructure and crystal evolution...
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| Veröffentlicht in: | Chemphyschem 2018-01, Vol.19 (1), p.108-115 |
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| creator | Ngo, Duc‐The Hung, Le Thanh Van Nong, Ngo |
| description | We demonstrate an advanced approach using state of the art in situ transmission electron microscopy (TEM) to understand the interplay between nanostructures and thermoelectric (TE) properties of high‐performance Mg‐doped Zn4Sb3 TE systems. By using the technique, microstructure and crystal evolutions of TE material have been dynamically captured as a function of temperature from 300 K to 573 K. On heating, we have clearly observed precipitation and growth of a Zn‐rich secondary phase as nanoinclusions in the matrix of primary Zn4Sb3 phase. Elemental mapping by STEM‐EDX spectroscopy reveals enrichment of Zn in the secondary Zn6Sb5 nanoinclusions during the thermal processing without decomposition. Such nanostructures strongly enhances phonon scattering, resulting in a decrease in the thermal conductivity leading to a zT value of 1.4 at 718 K.
State of the art in situ transmission electron microscopy (TEM) is used to understand the interplay between nanostructures and thermoelectric (TE) properties of high‐performance Mg‐doped Zn4Sb3 TE systems. |
| doi_str_mv | 10.1002/cphc.201700930 |
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State of the art in situ transmission electron microscopy (TEM) is used to understand the interplay between nanostructures and thermoelectric (TE) properties of high‐performance Mg‐doped Zn4Sb3 TE systems.</description><subject>electron diffraction</subject><subject>energy transfer</subject><subject>Magnesium base alloys</subject><subject>materials science</subject><subject>Nanostructure</subject><subject>solid-state structures</subject><subject>Thermal conductivity</subject><subject>Thermoelectric materials</subject><subject>Transmission electron microscopy</subject><subject>Zn-Sb compounds</subject><issn>1439-4235</issn><issn>1439-7641</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNo9kM9LwzAUx4MoOKdXzwHPnUmTNqm3UqcbbCpsXryENn3bMrqmpimym3-Cf6N_iR0bnt578P3B-yB0S8mIEhLe62ajRyGhgpCEkTM0oJwlgYg5PT_tPGTRJbpq2y0hRBJBB8hMa7wwvsPL8RwvfFcaaLFd4Ze8tq13nfadgxIvN-B2FirQ3hmN57kHZ_KqfcBpjdOmqYzOvbE19hbP17_fP4-26W0fNV8UDKdVZffX6GLVO-DmNIfo_Wm8zCbB7PV5mqWzYM36N4KoIDSmAjiNCIhCgtaMg5Z5XArNCw4yDnVSRDHIMolESEsdE8ZDuWKM5lKzIbo75jbOfnbQerW1nav7SkUTyWPJqaC9KjmqvkwFe9U4s8vdXlGiDizVgaX6Z6myt0n2f7E_EeVqdQ</recordid><startdate>20180105</startdate><enddate>20180105</enddate><creator>Ngo, Duc‐The</creator><creator>Hung, Le Thanh</creator><creator>Van Nong, Ngo</creator><general>Wiley Subscription Services, Inc</general><scope>K9.</scope></search><sort><creationdate>20180105</creationdate><title>In Situ TEM Studies of Nanostructured Thermoelectric Materials: An Application to Mg‐Doped Zn4Sb3 Alloy</title><author>Ngo, Duc‐The ; Hung, Le Thanh ; Van Nong, Ngo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-g3100-5b01617e4150e7b8ecc34ec8a6d7c4b4e862c9b56e8d95721dc603428f331a8c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>electron diffraction</topic><topic>energy transfer</topic><topic>Magnesium base alloys</topic><topic>materials science</topic><topic>Nanostructure</topic><topic>solid-state structures</topic><topic>Thermal conductivity</topic><topic>Thermoelectric materials</topic><topic>Transmission electron microscopy</topic><topic>Zn-Sb compounds</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ngo, Duc‐The</creatorcontrib><creatorcontrib>Hung, Le Thanh</creatorcontrib><creatorcontrib>Van Nong, Ngo</creatorcontrib><collection>ProQuest Health & Medical Complete (Alumni)</collection><jtitle>Chemphyschem</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ngo, Duc‐The</au><au>Hung, Le Thanh</au><au>Van Nong, Ngo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>In Situ TEM Studies of Nanostructured Thermoelectric Materials: An Application to Mg‐Doped Zn4Sb3 Alloy</atitle><jtitle>Chemphyschem</jtitle><date>2018-01-05</date><risdate>2018</risdate><volume>19</volume><issue>1</issue><spage>108</spage><epage>115</epage><pages>108-115</pages><issn>1439-4235</issn><eissn>1439-7641</eissn><abstract>We demonstrate an advanced approach using state of the art in situ transmission electron microscopy (TEM) to understand the interplay between nanostructures and thermoelectric (TE) properties of high‐performance Mg‐doped Zn4Sb3 TE systems. By using the technique, microstructure and crystal evolutions of TE material have been dynamically captured as a function of temperature from 300 K to 573 K. On heating, we have clearly observed precipitation and growth of a Zn‐rich secondary phase as nanoinclusions in the matrix of primary Zn4Sb3 phase. Elemental mapping by STEM‐EDX spectroscopy reveals enrichment of Zn in the secondary Zn6Sb5 nanoinclusions during the thermal processing without decomposition. Such nanostructures strongly enhances phonon scattering, resulting in a decrease in the thermal conductivity leading to a zT value of 1.4 at 718 K.
State of the art in situ transmission electron microscopy (TEM) is used to understand the interplay between nanostructures and thermoelectric (TE) properties of high‐performance Mg‐doped Zn4Sb3 TE systems.</abstract><cop>Weinheim</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1002/cphc.201700930</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | electron diffraction energy transfer Magnesium base alloys materials science Nanostructure solid-state structures Thermal conductivity Thermoelectric materials Transmission electron microscopy Zn-Sb compounds |
| title | In Situ TEM Studies of Nanostructured Thermoelectric Materials: An Application to Mg‐Doped Zn4Sb3 Alloy |
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