Article Title

SnO₂@Co₃O₄ hollow nano-spheres for a Li-ion battery anode with extraordinary performance

Authors

Won-Sik Kim, Department of Materials Science and Engineering and Research Institute of Advanced Materials, Seoul National University, Seoul 151-744, Republic of Korea
Yoon Hwa, Department of Materials Science and Engineering and Research Institute of Advanced Materials, Seoul National University, Seoul 151-744, Republic of Korea
Hong-Chan Kim, Department of Materials Science and Engineering and Research Institute of Advanced Materials, Seoul National University, Seoul 151-744, Republic of Korea
Jong-Hyun Choi, Department of Materials Science and Engineering and Research Institute of Advanced Materials, Seoul National University, Seoul 151-744, Republic of Korea
Hun-Joon Sohn, Department of Materials Science and Engineering and Research Institute of Advanced Materials, Seoul National University, Seoul 151-744, Republic of Korea
Seong-Hyeon Hong, Department of Materials Science and Engineering and Research Institute of Advanced Materials, Seoul National University, Seoul 151-744, Republic of Korea

Keywords

hollow sphere, lithium-ion battery, anode, SnO2, Co3O4

Abstract

SnO2@Co3O4 hollow nano-spheres have been prepared using the template-based sol–gel coating technique and their electrochemical performance as an anode for lithium-ion battery (LIB) was investigated.The size of synthesized hollow spheres was about 50 nm with the shell thickness of 7–8 nm. The fabricated SnO2@Co3O4 hollow nano-sphere electrode exhibited an extraordinary reversible capacity (962 mAh·g–1 after 100 cycles at 100 mA·g–1), good cyclability, and high rate capability, which was attributed to the Co-enhanced reversibility of the Li2O reduction reaction during cycling.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-014-0475-2

Publisher

Tsinghua University Press

Recommended Citation

Won-Sik Kim,Yoon Hwa,Hong-Chan Kim,Jong-Hyun Choi,Hun-Joon Sohn,Seong-Hyeon Hong, SnO2@Co3O4 hollow nano-spheres for a Li-ion battery anode with extraordinary performance. NanoRes.2014, 7(8): 1128–1136