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Updated: Jun 3, 2025
In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries
Published on: November 10, 2014
Natural hematite-derived NiFe2O4 as a separator modification material for improved Li-S battery performance
Lei Zhang1, Jiawen Cui1, Haoxian Zhu1
1Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China. sunli@cugb.edu.cn.
Abstract:
The shuttling effect of polysulfides in lithium-sulfur batteries seriously affects their performance. Herein, NiFe2O4 derived from natural hematite is coated on a PP separator (NFO@PP), which can effectively block the shuttling of polysulfides and has strong adsorption and catalytic capabilities. The NFO@PP cell has an initial capacity of up to 1258.1 mA h g-1 at 0.1C and still has 809.6 mA h g-1 at 2C. Impressively, at 0.5C, the NFO@PP cell retains a specific capacity of 612.1 mA h g-1 after 1000 cycles. The successful application of abundant natural hematite in lithium-sulfur batteries will certainly be of great significance to the development of more cost-effective energy storage devices.
