Porous sulfated metal oxide SO4 2−/Fe2O3 as an anode material for Li-ion batteries with enhanced electrochemical performance
Source abstract
Abstract
Sulfated metal oxide SO4 2−/Fe2O3 was prepared by a novel facile sol–gel method combined with a subsequent heating treatment process. The as-synthesized products were analyzed by XRD, FTIR, and FE-SEM. Compared with the unsulfated Fe2O3, the agglomeration of particles has been alleviated after the incorporation of SO4 2−. Interestingly, the primary particle size of the SO4 2−/Fe2O3 (about 5 nm) is similar to its normal counterparts even after the calcination treatment. More importantly, SO4 2−/Fe2O3 exhibits a porous architecture, which is an intriguing feature for electrode materials. When used as anode materials in Li-ion batteries, SO4 2−/Fe2O3 delivered a higher reversible discharge capacity (992 mAh g−1), with smaller charge transfer resistance, excellent rate performance, and better cycling stability than normal Fe2O3. We believed that the presence of SO4 2− and porous architecture should be responsible for the enhanced electrochemical performance, which could provide more continuous and accessible conductive paths for Li+ and electrons.
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Research context
OpenAlex topics: Advancements in Battery Materials · Supercapacitor Materials and Fabrication · Advanced Battery Materials and Technologies
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References (34)
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