Easy encapsulation of Sn4P3 nanoparticles into honeycomb-like nitrogen-doped carbon matrix with enhanced electrochemical performance for Li-ion batteries

文献类型： 外文期刊

第一作者： Liu, Zhanfei

作者： Liu, Zhanfei;Chen, Jing;Fan, Xuliang;Pan, Ying;Li, Ying;Ma, Lin;Zhai, Hongzhi;Xu, Limei;Chen, Jing

作者机构：

关键词： Tin phosphide; Carbon materials; Capacitive property; Anode; Li-ion battery

期刊名称：JOURNAL OF ALLOYS AND COMPOUNDS （ 影响因子：4.65； 五年影响因子：4.082 ）

ISSN： 0925-8388

年卷期： 2021 年 871 卷

页码：

收录情况： SCI

摘要： Tin phosphide (Sn4P3) has arisen to be an anode material toward lithium-ion batteries (LIBs) with great potential for its high theoretic Li-storage capacity. Nevertheless, unavoidable capacity fading as well as poor rate capability have severely hindered the extended application of Sn4P3. In this paper, a hierarchical hybrid (Sn4P3-NC) has been fabricated by an easy freeze-drying followed by an annealing and phosphorization treatment. In this hybrid, Sn4P3 nanoparticles are well encapsulated into honeycomb-like nitrogen-doped carbon frameworks. Porous carbon provides multiple electron expressway and robust mechanical support. Furthermore, Sn4P3 nanoparticles are well confined in carbon matrix so as to effectively alleviate the volume expansion. Having profited from the desirable nanostructures and significantly enhanced synergetic effect, Sn4P3-NC as an anode for LIB achieves an extremely improved electrochemical property. A high capacity of similar to 881 mAh g(-1) could be retained after 150 cycles at 100 mA g(-1) and an enhanced rate and cycle performance with the discharge capacity of similar to 507 mAh g(-1) at 1000 mA g(-1) through 400 cycles is also exhibited. (c) 2021 Elsevier B.V. All rights reserved.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序