mirage

Controlled synthesis of Sb nanostructures and their conversion to CoSb3 nanoparticle chains for li-ion battery electrodes.

DSpace/Manakin Repository

 

Search DR-NTU


Advanced Search Subject Search

Browse

My Account

Controlled synthesis of Sb nanostructures and their conversion to CoSb3 nanoparticle chains for li-ion battery electrodes.

Show simple item record

dc.contributor.author Zhu, Jixin.
dc.contributor.author Sun, Ting.
dc.contributor.author Chen, Jun Song.
dc.contributor.author Shi, Wenhui.
dc.contributor.author Zhang, Xiaojun.
dc.contributor.author Lou, David Xiong Wen.
dc.contributor.author Mhaisalkar, Subodh Gautam.
dc.contributor.author Hng, Huey Hoon.
dc.contributor.author Boey, Yin Chiang Freddy.
dc.contributor.author Ma, Jan.
dc.contributor.author Yan, Qingyu.
dc.date.accessioned 2012-07-12T06:49:25Z
dc.date.available 2012-07-12T06:49:25Z
dc.date.copyright 2010
dc.date.issued 2012-07-12
dc.identifier.citation Zhu, 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.
dc.identifier.uri http://hdl.handle.net/10220/8317
dc.description.abstract Nanostructured 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.
dc.language.iso en
dc.relation.ispartofseries Chemistry of materials
dc.rights © 2010 American Chemical Society.
dc.subject DRNTU::Engineering::Materials::Nanostructured materials.
dc.title Controlled synthesis of Sb nanostructures and their conversion to CoSb3 nanoparticle chains for li-ion battery electrodes.
dc.type Journal Article
dc.contributor.school School of Chemical and Biomedical Engineering
dc.identifier.doi http://dx.doi.org/10.1021/cm101663w

Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record