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

Release time:2020-05-23

Impact Factor:8.67

DOI number:10.1007/s12274-016-1381-6

Affiliation of Author(s):Peking Univ

Journal:Nano Res.

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.

Co-author:Xinyao, Zheng, Zhiliang, Liu, Teng, Wang

First Author:Xinghua, Chang

Indexed by:Journal paper

Correspondence Author:Xingguo, Li, Jie, Zheng

First-Level Discipline:0805 材料科学与工程

Document Type:J

Translation or Not:no

Date of Publication:2017-06-01