Article Title

Ultrafine Sn nanocrystals in a hierarchically porous N-doped carbon for lithium ion batteries

Authors

Xinghua Chang, Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
Teng Wang, Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Zhiliang Liu, Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Xinyao Zheng, Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Jie Zheng, Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Xingguo Li, Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China

Keywords

Sn, polyaniline, nanocomposite, lithium ion battery (LIB)

Abstract

ABSTRACT We report a simple method of preparing a high performance, Sn-based anode material for lithium ion batteries (LIBs). Adding H2O2 to an aqueous solution containing Sn2+ and aniline results in simultaneous polymerization of aniline and oxidation of Sn2+ to SnO2, leading to a homogeneous composite of polyaniline and SnO2. Hydrogen thermal reduction of the above composite yields N-doped carbon with hierarchical porosity and homogeneously distributed, ultrafine Sn particles. The nanocomposite exhibits excellent performance as an anode material for lithium ion batteries, showing a high reversible specific capacity of 788 mAh·g−1 at a current density of 100 mA·g−1 after 300 cycles and very good stability up to 5,000 mA·g−1. The simple preparation method combined with the good electrochemical performance is highly promising to promote the application of Sn based anode materials.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-016-1381-6

Publisher

Tsinghua University Press

Recommended Citation

Xinghua Chang,Teng Wang,Zhiliang Liu,Xinyao Zheng,Jie Zheng,Xingguo Li, Ultrafine Sn nanocrystals in a hierarchically porous N-doped carbon for lithium ion batteries. NanoRes.2017, 10(6): 1950–1958