Ternary sulfur/polyacrylonitrile/Mg0.6Ni0.4O composite cathodes for high performance lithium/sulfur batteries

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dc.contributor.authorZhang, Yongguang
dc.contributor.authorZhao, Yan
dc.contributor.authorYermukhambetova, Assiya
dc.contributor.authorBakenov, Zhumabay
dc.contributor.authorChen, P.
dc.date.accessioned2015-12-04T06:31:21Z
dc.date.available2015-12-04T06:31:21Z
dc.date.issued2013-01
dc.description.abstractNanostructured magnesium nickel oxide (Mg0.6Ni0.4O) was synthesized by a self-propagating high temperature synthesis method followed by heat treatment. The particles of the resulting oxide were used as additives to prepare the sulfur/polyacrylonitrile/Mg0.6Ni0.4O (S/PAN/Mg0.6Ni0.4O) composite via wet ballmilling. The SEM observation revealed that the composite morphology was drastically changed by the addition of Mg0.6Ni0.4O, from smooth bulky particles of S/PAN to rough nanostructured agglomerates with two times the increase in the specific surface area, favouring the reactivity of the composite, and a homogeneous component distribution. Cyclic voltammetry, discharge–charge tests and ac impedance spectroscopy have shown improved conductivity and electrochemical properties of the composite by the addition of Mg0.6Ni0.4O, leading to high sulfur utilization and interfacial stabilization in a Li/S cell upon discharge–charge cycling. The cell demonstrated enhanced reversibility, resulting in a discharge capacity of about 1223 mA h g 1 at the second cycle and retained about 100% of this value over 100 cycles. Furthermore, the S/PAN/Mg0.6Ni0.4O composite cathode exhibited a good rate capability with discharge capacities of 887, 710 and 445 mA h g 1 at 0.5, 0.7 and 1 C, respectively.ru_RU
dc.identifier.citationZhang Yongguang., Zhao Yan., Yermukhambetova Assiya., Bakenov Zhumabay., Chen P., 2013, Ternary sulfur/polyacrylonitrile/Mg0.6Ni0.4O composite cathodes for high performance lithium/sulfur batteries, DOI: 10.1039/c2ta00105eru_RU
dc.identifier.urihttp://nur.nu.edu.kz/handle/123456789/860
dc.language.isoenru_RU
dc.publisherJournal of materials chemistry., http://www.researchgate.net/publication/235654118ru_RU
dc.subjectternary sulfurru_RU
dc.subjectpolyacrylonitrileru_RU
dc.subjectcomposite cathodesru_RU
dc.subjecthigh performance lithiumru_RU
dc.subjectsulfur batteriesru_RU
dc.titleTernary sulfur/polyacrylonitrile/Mg0.6Ni0.4O composite cathodes for high performance lithium/sulfur batteriesru_RU
dc.typeArticleru_RU

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