Spray-pyrolyzed silicon/disordered carbon nanocomposites for lithium-ion battery anodes
Identifieur interne : 009339 ( Main/Exploration ); précédent : 009338; suivant : 009340Spray-pyrolyzed silicon/disordered carbon nanocomposites for lithium-ion battery anodes
Auteurs : S. H. Ng [Australie] ; J. Wang [Australie] ; K. Konstantinov [Australie] ; D. Wexler [Australie] ; S. Y. Chew [Australie] ; Z. P. Guo [Australie] ; H. K. Liu [Australie]Source :
- Journal of power sources [ 0378-7753 ] ; 2007.
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- Pascal (Inist)
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Abstract
A new and effective approach to prepare carbon-coated Si nanocomposites as high capacity anode materials for lithium-ion batteries with markedly improved electrochemical performance is described. Initially, nanosized Si particles (<100 nm) were mixed with different concentrations of the carbon source precursor, citric acid in ethanol solution via ultrasonication. Spray pyrolysis of these mixtures at 400°C in air resulted in an amorphous carbon coating on the spherical Si nanoparticles. High-resolution transmission electron microscopy (HRTEM) analysis confirms a homogeneous layer of amorphous carbon coating of ∼10 nm. These resultant nanocomposites show excellent cycling performance, especially when the disordered carbon (DC) content is above 50wt.%. The 44Si/56DC nanocomposite shows the highest specific capacity retention of 1120mAh g-1 after 100 cycles. The carbon-coating on the nanocrystalline Si particles appears to be the main reason for the good cyclability, suggesting the excellent potential of these Si/DC-based nanocomposites for use as alternative anodes for lithium-ion batteries.
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H." last="Ng">S. H. Ng</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute for Superconducting and Electronic Materials, University of Wollongong</s1><s2>NSW 2522</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>NSW 2522</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>ARC Centre ofExcellence for Electromaterials Science, University of Wollongong</s1><s2>NSW 2522</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>NSW 2522</wicri:noRegion></affiliation></author><author><name sortKey="Wang, J" sort="Wang, J" uniqKey="Wang J" first="J." last="Wang">J. 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Konstantinov</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute for Superconducting and Electronic Materials, University of Wollongong</s1><s2>NSW 2522</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>NSW 2522</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>ARC Centre ofExcellence for Electromaterials Science, University of Wollongong</s1><s2>NSW 2522</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>NSW 2522</wicri:noRegion></affiliation></author><author><name sortKey="Wexler, D" sort="Wexler, D" uniqKey="Wexler D" first="D." last="Wexler">D. Wexler</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Faculty of Engineering, University of Wollongong</s1><s2>NSW 2522</s2><s3>AUS</s3><sZ>4 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>NSW 2522</wicri:noRegion></affiliation></author><author><name sortKey="Chew, S Y" sort="Chew, S Y" uniqKey="Chew S" first="S. Y." last="Chew">S. Y. Chew</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute for Superconducting and Electronic Materials, University of Wollongong</s1><s2>NSW 2522</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>NSW 2522</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>ARC Centre ofExcellence for Electromaterials Science, University of Wollongong</s1><s2>NSW 2522</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>NSW 2522</wicri:noRegion></affiliation></author><author><name sortKey="Guo, Z P" sort="Guo, Z P" uniqKey="Guo Z" first="Z. P." last="Guo">Z. P. Guo</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute for Superconducting and Electronic Materials, University of Wollongong</s1><s2>NSW 2522</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>NSW 2522</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>ARC Centre ofExcellence for Electromaterials Science, University of Wollongong</s1><s2>NSW 2522</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>NSW 2522</wicri:noRegion></affiliation></author><author><name sortKey="Liu, H K" sort="Liu, H K" uniqKey="Liu H" first="H. K." last="Liu">H. K. Liu</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute for Superconducting and Electronic Materials, University of Wollongong</s1><s2>NSW 2522</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>NSW 2522</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>ARC Centre ofExcellence for Electromaterials Science, University of Wollongong</s1><s2>NSW 2522</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>NSW 2522</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Journal of power sources</title><title level="j" type="abbreviated">J. power sources</title><idno type="ISSN">0378-7753</idno><imprint><date when="2007">2007</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of power sources</title><title level="j" type="abbreviated">J. power sources</title><idno type="ISSN">0378-7753</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Anode</term><term>Discharge charge cycle</term><term>Lithium battery</term><term>Nanocrystal</term><term>Nanoparticle</term><term>Nanostructured materials</term><term>Performance</term><term>Protective coatings</term><term>Pyrolysis</term><term>Secondary cell</term><term>Silicon</term><term>Specific capacity</term><term>Transmission electron microscopy</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Silicium</term><term>Nanomatériau</term><term>Batterie lithium</term><term>Anode</term><term>Performance</term><term>Pyrolyse</term><term>Revêtement protecteur</term><term>Nanoparticule</term><term>Microscopie électronique transmission</term><term>Cycle charge décharge</term><term>Capacité spécifique</term><term>Nanocristal</term><term>Accumulateur électrochimique</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">A new and effective approach to prepare carbon-coated Si nanocomposites as high capacity anode materials for lithium-ion batteries with markedly improved electrochemical performance is described. Initially, nanosized Si particles (<100 nm) were mixed with different concentrations of the carbon source precursor, citric acid in ethanol solution via ultrasonication. Spray pyrolysis of these mixtures at 400°C in air resulted in an amorphous carbon coating on the spherical Si nanoparticles. High-resolution transmission electron microscopy (HRTEM) analysis confirms a homogeneous layer of amorphous carbon coating of ∼10 nm. These resultant nanocomposites show excellent cycling performance, especially when the disordered carbon (DC) content is above 50wt.%. The 44Si/56DC nanocomposite shows the highest specific capacity retention of 1120mAh g<sup>-1</sup> after 100 cycles. The carbon-coating on the nanocrystalline Si particles appears to be the main reason for the good cyclability, suggesting the excellent potential of these Si/DC-based nanocomposites for use as alternative anodes for lithium-ion batteries.</div></front></TEI><affiliations><list><country><li>Australie</li></country></list><tree><country name="Australie"><noRegion><name sortKey="Ng, S H" sort="Ng, S H" uniqKey="Ng S" first="S. H." last="Ng">S. H. Ng</name></noRegion><name sortKey="Chew, S Y" sort="Chew, S Y" uniqKey="Chew S" first="S. Y." last="Chew">S. Y. Chew</name><name sortKey="Chew, S Y" sort="Chew, S Y" uniqKey="Chew S" first="S. Y." last="Chew">S. Y. Chew</name><name sortKey="Guo, Z P" sort="Guo, Z P" uniqKey="Guo Z" first="Z. P." last="Guo">Z. P. Guo</name><name sortKey="Guo, Z P" sort="Guo, Z P" uniqKey="Guo Z" first="Z. P." last="Guo">Z. P. Guo</name><name sortKey="Konstantinov, K" sort="Konstantinov, K" uniqKey="Konstantinov K" first="K." last="Konstantinov">K. Konstantinov</name><name sortKey="Konstantinov, K" sort="Konstantinov, K" uniqKey="Konstantinov K" first="K." last="Konstantinov">K. Konstantinov</name><name sortKey="Liu, H K" sort="Liu, H K" uniqKey="Liu H" first="H. K." last="Liu">H. K. Liu</name><name sortKey="Liu, H K" sort="Liu, H K" uniqKey="Liu H" first="H. K." last="Liu">H. K. Liu</name><name sortKey="Ng, S H" sort="Ng, S H" uniqKey="Ng S" first="S. H." last="Ng">S. H. Ng</name><name sortKey="Wang, J" sort="Wang, J" uniqKey="Wang J" first="J." last="Wang">J. Wang</name><name sortKey="Wang, J" sort="Wang, J" uniqKey="Wang J" first="J." last="Wang">J. Wang</name><name sortKey="Wexler, D" sort="Wexler, D" uniqKey="Wexler D" first="D." last="Wexler">D. Wexler</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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