dc.contributor.authorZhu, Jixin
dc.contributor.authorSun, Ting
dc.contributor.authorChen, Jun Song
dc.contributor.authorShi, Wenhui
dc.contributor.authorZhang, Xiaojun
dc.contributor.authorLou, David Xiong Wen
dc.contributor.authorMhaisalkar, Subodh Gautam
dc.contributor.authorHng, Huey Hoon
dc.contributor.authorBoey, Freddy Yin Chiang
dc.contributor.authorMa, Jan
dc.contributor.authorYan, Qingyu
dc.identifier.citationZhu, J., Sun, T., Chen, J. S., Shi, W., Zhang, X., Lou, D. X. W., et al. (2010). Controlled Synthesis of Sb Nanostructures and Their Conversion to CoSb3 Nanoparticle Chains for Li-Ion Battery Electrodes. Chemistry of Materials, 22(18), 5333-5339.en_US
dc.description.abstractNanostructured Sb was prepared through a simple polyol process. Either Sb nanoparticles (Sb NP) or nanowires (Sb NW) were obtained by adjusting the concentration of surfactant. Electrochemical analyses revealed that the resultant Sb crystals displayed high charge storage capacities as Li-ion battery electrodes and relatively poor cycling retention during the charge−discharge process. For instance, the capacity was 560−584 mA h/g during the second cycle, which decreased to 120−200 mA h/g during the 70th cycle at a rate of 0.2 C. Thus, Sb NPs were reacted with Co precursors to form one-dimensional (1-D) NP chains wrapped in a polyvinyl pyridine layer, and the length of the NP chains could be adjusted by varying the concentration of polyvinyl pyridine. Through a controlled annealing process, the polyvinyl pyridine layer was converted to amorphous carbon, which led to the formation of 1-D core−shell structures with CoSb3 NP chains entrapped in the carbon layer. Although CoSb3 NP chains with a carbon shell displayed a lower initial charge storage capacity than Sb nanostructures, improved cycling performance was observed. The capacity was 468 mA h/g during the second cycle, which dropped to 421 mA h/g during the 70th cycle at a rate of 0.2 C. Compared to CoSb3 produced via other techniques, CoSb3/C NP chains displayed higher cycling stability, because of the presence of a carbon buffer layer.en_US
dc.relation.ispartofseriesChemistry of materialsen_US
dc.rights© 2010 American Chemical Society.en_US
dc.subjectDRNTU::Engineering::Materials::Nanostructured materials
dc.titleControlled synthesis of Sb nanostructures and their conversion to CoSb3 nanoparticle chains for li-ion battery electrodesen_US
dc.typeJournal Article
dc.contributor.researchEnergy Research Institute @NTU
dc.contributor.schoolSchool of Chemical and Biomedical Engineeringen_US
dc.contributor.schoolSchool of Materials Science and Engineering

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