Design and Synthesis of Hierarchical Nanowire Composites for Electrochemical Energy Storage
Identifieur interne : 000603 ( Main/Exploration ); précédent : 000602; suivant : 000604Design and Synthesis of Hierarchical Nanowire Composites for Electrochemical Energy Storage
Auteurs : Zheng Chen [États-Unis] ; Yaochun Qin [États-Unis] ; Ding Weng [États-Unis] ; Qiangfeng Xiao [États-Unis] ; Yiting Peng [États-Unis] ; Xiaolei Wang [États-Unis] ; Hexing Li [États-Unis] ; Fei Wei [États-Unis] ; Yunfeng Lu [États-Unis]Source :
- Advanced Functional Materials [ 1616-301X ] ; 2009-11-09.
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Abstract
Nanocomposites of interpenetrating carbon nanotubes and vanadium pentoxide (V2O5) nanowires networks are synthesized via a simple in situ hydrothermal process. These fibrous nanocomposites are hierarchically porous with high surface area and good electric conductivity, which makes them excellent material candidates for supercapacitors with high energy density and power density. Nanocomposites with a capacitance up to 440 and 200 F g−1 are achieved at current densities of 0.25 and 10 A g−1, respectively. Asymmetric devices based on these nanocomposites and aqueous electrolyte exhibit an excellent charge/discharge capability, and high energy densities of 16 W h kg−1 at a power density of 75 W kg−1 and 5.5 W h kg−1 at a high power density of 3 750 W kg−1. This performance is a significant improvement over current electrochemical capacitors and is highly competetive with Ni–MH batteries. This work provides a new platform for high‐density electrical‐energy storage for electric vehicles and other applications.
Url:
DOI: 10.1002/adfm.200900971
Affiliations:
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xml:lang="fr">États-Unis</country><placeName><region type="state">Californie</region></placeName><wicri:cityArea>Hexing Li, Department of Chemistry Shanghai Normal University Shanghai 200234 (China).Fei Wei, Department of Chemical Engineering Tsinghua University Beijing 100084 (China).Yunfeng Lu, Department of Chemical and Biomolecular EngineeringUniversity of California Los Angeles</wicri:cityArea></affiliation></author><author><name sortKey="Wei, Fei" sort="Wei, Fei" uniqKey="Wei F" first="Fei" last="Wei">Fei Wei</name><affiliation></affiliation><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><placeName><region type="state">Californie</region></placeName><wicri:cityArea>Hexing Li, Department of Chemistry Shanghai Normal University Shanghai 200234 (China).Fei Wei, Department of Chemical Engineering Tsinghua University Beijing 100084 (China).Yunfeng Lu, Department of Chemical and Biomolecular EngineeringUniversity of California Los Angeles</wicri:cityArea></affiliation></author><author><name sortKey="Lu, Yunfeng" sort="Lu, Yunfeng" uniqKey="Lu Y" first="Yunfeng" last="Lu">Yunfeng Lu</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><placeName><region type="state">Californie</region></placeName><wicri:cityArea>Department of Chemical and Biomolecular EngineeringUniversity of California Los Angeles</wicri:cityArea></affiliation><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><placeName><region type="state">Californie</region></placeName><wicri:cityArea>Hexing Li, Department of Chemistry Shanghai Normal University Shanghai 200234 (China).Fei Wei, Department of Chemical Engineering Tsinghua University Beijing 100084 (China).Yunfeng Lu, Department of Chemical and Biomolecular EngineeringUniversity of California Los Angeles</wicri:cityArea></affiliation></author></analytic><monogr></monogr><series><title level="j">Advanced Functional Materials</title><title level="j" type="abbrev">Adv. Funct. Mater.</title><idno type="ISSN">1616-301X</idno><idno type="eISSN">1616-3028</idno><imprint><publisher>WILEY‐VCH Verlag</publisher><pubPlace>Weinheim</pubPlace><date type="published" when="2009-11-09">2009-11-09</date><biblScope unit="volume">19</biblScope><biblScope unit="issue">21</biblScope><biblScope unit="page" from="3420">3420</biblScope><biblScope unit="page" to="3426">3426</biblScope></imprint><idno type="ISSN">1616-301X</idno></series><idno type="istex">C198C59DEDDB443FB2036F869896964D4A4D1D34</idno><idno type="DOI">10.1002/adfm.200900971</idno><idno type="ArticleID">ADFM200900971</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1616-301X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>carbon nanotubes</term><term>electrochemistry</term><term>nanocomposites</term><term>supercapacitors</term><term>vanadium oxide nanowires</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Nanocomposites of interpenetrating carbon nanotubes and vanadium pentoxide (V2O5) nanowires networks are synthesized via a simple in situ hydrothermal process. These fibrous nanocomposites are hierarchically porous with high surface area and good electric conductivity, which makes them excellent material candidates for supercapacitors with high energy density and power density. Nanocomposites with a capacitance up to 440 and 200 F g−1 are achieved at current densities of 0.25 and 10 A g−1, respectively. Asymmetric devices based on these nanocomposites and aqueous electrolyte exhibit an excellent charge/discharge capability, and high energy densities of 16 W h kg−1 at a power density of 75 W kg−1 and 5.5 W h kg−1 at a high power density of 3 750 W kg−1. This performance is a significant improvement over current electrochemical capacitors and is highly competetive with Ni–MH batteries. This work provides a new platform for high‐density electrical‐energy storage for electric vehicles and other applications.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>Californie</li></region></list><tree><country name="États-Unis"><region name="Californie"><name sortKey="Chen, Zheng" sort="Chen, Zheng" uniqKey="Chen Z" first="Zheng" last="Chen">Zheng Chen</name></region><name sortKey="Li, Hexing" sort="Li, Hexing" uniqKey="Li H" first="Hexing" last="Li">Hexing Li</name><name sortKey="Lu, Yunfeng" sort="Lu, Yunfeng" uniqKey="Lu Y" first="Yunfeng" last="Lu">Yunfeng Lu</name><name sortKey="Lu, Yunfeng" sort="Lu, Yunfeng" uniqKey="Lu Y" first="Yunfeng" last="Lu">Yunfeng Lu</name><name sortKey="Peng, Yiting" sort="Peng, Yiting" uniqKey="Peng Y" first="Yiting" last="Peng">Yiting Peng</name><name sortKey="Qin, Yaochun" sort="Qin, Yaochun" uniqKey="Qin Y" first="Yaochun" last="Qin">Yaochun Qin</name><name sortKey="Wang, Xiaolei" sort="Wang, Xiaolei" uniqKey="Wang X" first="Xiaolei" last="Wang">Xiaolei Wang</name><name sortKey="Wei, Fei" sort="Wei, Fei" uniqKey="Wei F" first="Fei" last="Wei">Fei Wei</name><name sortKey="Weng, Ding" sort="Weng, Ding" uniqKey="Weng D" first="Ding" last="Weng">Ding Weng</name><name sortKey="Xiao, Qiangfeng" sort="Xiao, Qiangfeng" uniqKey="Xiao Q" first="Qiangfeng" last="Xiao">Qiangfeng Xiao</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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