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Updated: Oct 7, 2025
Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
A novel "caterpillar with eggs" mesostructured iron sulfide as an anode for a Li-ion battery displaying stable
Ting Zhou1, Yan Wang1, Yajun Zhu1
1Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, P. R. China. jyliu@iim.ac.cn.
Abstract:
Emerging anodes are important for high energy-density lithium-ion batteries. Here, we present a mesostructured FeS2 comprising nanoparticles embedded in a nanoneedle-assembled nanotube to form a novel "caterpillar with eggs" (CWE) structure. The voids alleviated the volumetric change upon charge-discharge; the nanoneedles-assembled shell provided rapid transport pathways for ions and electrons. The FeS2 anode exhibited a high capacity of 805.1 mA h g-1 after 500 cycles at 2 A g-1. When cycling at -10 °C and 45 °C, the anode provided capacities of 754.5 and 744.4 mA h g-1 after 100 cycles at 1 A g-1, respectively. This good electrochemical performance will enable our special design to find broad applications for developing high-performance energy-storage systems.
