The Experts below are selected from a list of 327 Experts worldwide ranked by ideXlab platform
Zishun Li - One of the best experts on this subject based on the ideXlab platform.
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carbon sphere co9s8 yolk shell structure with Good Morphology stability for improved lithium storage performance
Nanotechnology, 2017Co-Authors: Xuekun Tang, Jing Huang, Qiming Feng, Zishun LiAbstract:The poor electronic conductivity and huge volume expansion of cobalt sulfides upon cycling would lead to their poor electrochemical performances for Lithium-ion batteries. Here, we rationally design a yolk-shell carbon sphere@Co9S8 (C@CS) composite, which demonstrates improved kinetics and excellent Morphology stability during cycling. This structure can keep Co9S8 shell from collapse and aggregation. After cycling, a layer of thin solid electrolyte interphase is coated on the Co9S8 shells and prevented them from dissolving in electrolyte, which is helpful for the electrochemical performances. As a result, the C@CS electrodes exhibit Good lithium storage performances, including excellent cyclic stability up to 300 cycles at 1000 and 2000 mA g−1 and high-rate property of 4000 mA g−1 with a capacity of 489 mA h g−1.
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Carbon sphere@Co9S8 yolk-shell structure with Good Morphology stability for improved lithium storage performance.
Nanotechnology, 2017Co-Authors: Xuekun Tang, Jing Huang, Qiming Feng, Zishun LiAbstract:The poor electronic conductivity and huge volume expansion of cobalt sulfides upon cycling would lead to their poor electrochemical performances for Lithium-ion batteries. Here, we rationally design a yolk-shell carbon sphere@Co9S8 (C@CS) composite, which demonstrates improved kinetics and excellent Morphology stability during cycling. This structure can keep Co9S8 shell from collapse and aggregation. After cycling, a layer of thin solid electrolyte interphase is coated on the Co9S8 shells and prevented them from dissolving in electrolyte, which is helpful for the electrochemical performances. As a result, the C@CS electrodes exhibit Good lithium storage performances, including excellent cyclic stability up to 300 cycles at 1000 and 2000 mA g−1 and high-rate property of 4000 mA g−1 with a capacity of 489 mA h g−1.
Seong-ju Park - One of the best experts on this subject based on the ideXlab platform.
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Growth of Buffer-Free High-Quality ZnO Epilayer on Sapphire (0001) Using Radio-Frequency Magnetron Sputtering [J. Electrochem. Soc., 151, G623 (2004)]
Journal of The Electrochemical Society, 2004Co-Authors: Jin-yong Oh, R. Navamathavan, Dae Kue Hwang, Hyun Sik Kim, Jae-hong Lim, Kyoung-kook Kim, Seong-ju ParkAbstract:High-quality ZnO thin films were grown epitaxially on sapphire (0001) substrates by radio-frequency magnetron sputtering without a buffer layer at a high growth temperature of 750 degreesC. The full width at half maximum of X-ray diffraction v rocking measurement of the (0002) plane was 97.2 arcsec and that of the (10 (1) over bar2) plane was 705.5 arcsec. Scanning electron microscope and atomic force microscope measurements showed that the epilayers were grown in a 2-dimensional growth mode and had a root mean square roughness of 1.1 nm. These results showed that the ZnO films have a high degree of out-of-plane and in-plane crystallinity and a remarkably Good Morphology. Low-temperature photoluminescence spectra also revealed a very sharp excitonic emission comprised of a neutral donor bound exciton emission and a very strong free exciton A emission with first, second, and third LO phonon replicas, indicating that the ZnO epilayer was of a high optical quality. (C) 2004 The Electrochemical Society.
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growth of buffer free high quality zno epilayer on sapphire 0001 using radio frequency magnetron sputtering
Journal of The Electrochemical Society, 2004Co-Authors: Jin-yong Oh, R. Navamathavan, Dae Kue Hwang, Hyun Sik Kim, Jae-hong Lim, Kyoung-kook Kim, Seong-ju ParkAbstract:High-quality ZnO thin films were grown epitaxially on sapphire (0001) substrates by radio-frequency magnetron sputtering without a buffer layer at a high growth temperature of 750°C. The full width at half maximum of X-ray diffraction ω rocking measurement of the (0002) plane was 97.2 arcsec and that of the (1012) plane was 705.5 arcsec. Scanning electron microscope and atomic force microscope measurements showed that the epilayers were grown in a 2-dimensional growth mode and had a root mean square roughness of 1.1 nm. These results showed that the ZnO films have a high degree of out-of-plane and in-plane crystallinity and a remarkably Good Morphology. Low-temperature photoluminescence spectra also revealed a very sharp excitonic emission comprised of a neutral donor bound exciton emission and a very strong free exciton A emission with first, second, and third LO phonon replicas, indicating that the ZnO epilayer was of a high optical quality.
Xuekun Tang - One of the best experts on this subject based on the ideXlab platform.
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carbon sphere co9s8 yolk shell structure with Good Morphology stability for improved lithium storage performance
Nanotechnology, 2017Co-Authors: Xuekun Tang, Jing Huang, Qiming Feng, Zishun LiAbstract:The poor electronic conductivity and huge volume expansion of cobalt sulfides upon cycling would lead to their poor electrochemical performances for Lithium-ion batteries. Here, we rationally design a yolk-shell carbon sphere@Co9S8 (C@CS) composite, which demonstrates improved kinetics and excellent Morphology stability during cycling. This structure can keep Co9S8 shell from collapse and aggregation. After cycling, a layer of thin solid electrolyte interphase is coated on the Co9S8 shells and prevented them from dissolving in electrolyte, which is helpful for the electrochemical performances. As a result, the C@CS electrodes exhibit Good lithium storage performances, including excellent cyclic stability up to 300 cycles at 1000 and 2000 mA g−1 and high-rate property of 4000 mA g−1 with a capacity of 489 mA h g−1.
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Carbon sphere@Co9S8 yolk-shell structure with Good Morphology stability for improved lithium storage performance.
Nanotechnology, 2017Co-Authors: Xuekun Tang, Jing Huang, Qiming Feng, Zishun LiAbstract:The poor electronic conductivity and huge volume expansion of cobalt sulfides upon cycling would lead to their poor electrochemical performances for Lithium-ion batteries. Here, we rationally design a yolk-shell carbon sphere@Co9S8 (C@CS) composite, which demonstrates improved kinetics and excellent Morphology stability during cycling. This structure can keep Co9S8 shell from collapse and aggregation. After cycling, a layer of thin solid electrolyte interphase is coated on the Co9S8 shells and prevented them from dissolving in electrolyte, which is helpful for the electrochemical performances. As a result, the C@CS electrodes exhibit Good lithium storage performances, including excellent cyclic stability up to 300 cycles at 1000 and 2000 mA g−1 and high-rate property of 4000 mA g−1 with a capacity of 489 mA h g−1.
Peter Veranic - One of the best experts on this subject based on the ideXlab platform.
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how to obtain Good Morphology and antigen detection in the same tissue section
Protoplasma, 2017Co-Authors: Dasa Zupancic, Marjeta Tercelj, Bojan Strus, Peter VeranicAbstract:Most human and animal biopsy samples are routinely embedded in paraffin since this enables the pathologist or researcher to obtain excellent Morphology and simplifies storage. Nevertheless, in many cases, the antigen of interest cannot be detected in paraffin section. The alternative available for Good immunohistochemistry is preparation of cryosections, which usually provide decent antigen preservation and are frequently used for immunofluorescence. However, cryosections often do not provide efficient morphological details of tissues and cells for pathologic evaluation. In order to obtain Good antigen preservation and improve tissue and cell Morphology after freezing, we tested three different fixations and freezing methodologies and compared them to routine formaldehyde fixation and paraffin embedding. As a model system, we selected the epithelium of the rat urinary bladder and trachea. On all samples, haematoxylin and eosin staining was performed as well as immunofluorescence with antibodies against tight junction protein ZO-1 and against intermediate filament cytokeratin 7. The best compromise between Morphology and immunofluorescence was obtained with “sucrose impregnation prior to freezing” method. Moreover, this procedure is also quicker in comparison to standard paraffin section preparation. To check the clinical relevance of our study, this method was used for human biopsy samples of neoplastic urothelial and bronchial mucosa lesions. Besides Good immunofluorescence results, the Morphology of these samples was well preserved. We therefore propose that cryosection preparation with sucrose impregnation prior to freezing should be further exploited in other clinical and veterinary applications, since it enables Good Morphology and antigen preservation.
Jin-yong Oh - One of the best experts on this subject based on the ideXlab platform.
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Growth of Buffer-Free High-Quality ZnO Epilayer on Sapphire (0001) Using Radio-Frequency Magnetron Sputtering [J. Electrochem. Soc., 151, G623 (2004)]
Journal of The Electrochemical Society, 2004Co-Authors: Jin-yong Oh, R. Navamathavan, Dae Kue Hwang, Hyun Sik Kim, Jae-hong Lim, Kyoung-kook Kim, Seong-ju ParkAbstract:High-quality ZnO thin films were grown epitaxially on sapphire (0001) substrates by radio-frequency magnetron sputtering without a buffer layer at a high growth temperature of 750 degreesC. The full width at half maximum of X-ray diffraction v rocking measurement of the (0002) plane was 97.2 arcsec and that of the (10 (1) over bar2) plane was 705.5 arcsec. Scanning electron microscope and atomic force microscope measurements showed that the epilayers were grown in a 2-dimensional growth mode and had a root mean square roughness of 1.1 nm. These results showed that the ZnO films have a high degree of out-of-plane and in-plane crystallinity and a remarkably Good Morphology. Low-temperature photoluminescence spectra also revealed a very sharp excitonic emission comprised of a neutral donor bound exciton emission and a very strong free exciton A emission with first, second, and third LO phonon replicas, indicating that the ZnO epilayer was of a high optical quality. (C) 2004 The Electrochemical Society.
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growth of buffer free high quality zno epilayer on sapphire 0001 using radio frequency magnetron sputtering
Journal of The Electrochemical Society, 2004Co-Authors: Jin-yong Oh, R. Navamathavan, Dae Kue Hwang, Hyun Sik Kim, Jae-hong Lim, Kyoung-kook Kim, Seong-ju ParkAbstract:High-quality ZnO thin films were grown epitaxially on sapphire (0001) substrates by radio-frequency magnetron sputtering without a buffer layer at a high growth temperature of 750°C. The full width at half maximum of X-ray diffraction ω rocking measurement of the (0002) plane was 97.2 arcsec and that of the (1012) plane was 705.5 arcsec. Scanning electron microscope and atomic force microscope measurements showed that the epilayers were grown in a 2-dimensional growth mode and had a root mean square roughness of 1.1 nm. These results showed that the ZnO films have a high degree of out-of-plane and in-plane crystallinity and a remarkably Good Morphology. Low-temperature photoluminescence spectra also revealed a very sharp excitonic emission comprised of a neutral donor bound exciton emission and a very strong free exciton A emission with first, second, and third LO phonon replicas, indicating that the ZnO epilayer was of a high optical quality.