Synergy of a heteroatom (P–F) in nanostructured Sn3O4 as an anode for sodium-ion batteries
Na-ion batteries (SIBs) have attracted attention due to their economics and eco-friendly nature compared to lithium-ion batteries. Tin-based compounds are focused for SIBs owing to high theoretical capacities, though they have problems such as lower conductivity and pulverization that hinder their p...
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Published in | Sustainable energy & fuels Vol. 5; no. 10; pp. 2678 - 2687 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
London
Royal Society of Chemistry
21.05.2021
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Subjects | |
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Abstract | Na-ion batteries (SIBs) have attracted attention due to their economics and eco-friendly nature compared to lithium-ion batteries. Tin-based compounds are focused for SIBs owing to high theoretical capacities, though they have problems such as lower conductivity and pulverization that hinder their practical applications. Nanoscaling of the tin-based anode material with dual heteroatom doping having different functions might improve the electrochemical performance. Hence, a green approach for the synthesis of dual ion (P–F)-doped nanostructured Sn3O4 by a hydrothermal method was demonstrated with excellent Na-storage performance. A strategy of synthesizing dual ion-doped Sn3O4 can boost electrochemical performances owing to lattice distortion caused by defects, improved sodium ion conductivity and structural stability of electrodes. Significantly, P and F doping into Sn3O4 exhibits high specific capacity with superior rate capability, i.e. 705 mA h g−1 at 50 mA g−1 and 136 mA h g−1 at current density 5 A g−1. The physical insights into the Sn3O4 structure due to doping are illustrated, and the relationship with capacity density was investigated. This dual-ion doping strategy may motivate constructing high-performance SIBs. |
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AbstractList | Na-ion batteries (SIBs) have attracted attention due to their economics and eco-friendly nature compared to lithium-ion batteries. Tin-based compounds are focused for SIBs owing to high theoretical capacities, though they have problems such as lower conductivity and pulverization that hinder their practical applications. Nanoscaling of the tin-based anode material with dual heteroatom doping having different functions might improve the electrochemical performance. Hence, a green approach for the synthesis of dual ion (P–F)-doped nanostructured Sn3O4 by a hydrothermal method was demonstrated with excellent Na-storage performance. A strategy of synthesizing dual ion-doped Sn3O4 can boost electrochemical performances owing to lattice distortion caused by defects, improved sodium ion conductivity and structural stability of electrodes. Significantly, P and F doping into Sn3O4 exhibits high specific capacity with superior rate capability, i.e. 705 mA h g−1 at 50 mA g−1 and 136 mA h g−1 at current density 5 A g−1. The physical insights into the Sn3O4 structure due to doping are illustrated, and the relationship with capacity density was investigated. This dual-ion doping strategy may motivate constructing high-performance SIBs. |
Author | Ambalkar, Anuradha A Chothe, Ujjwala P Kale, Bharat B Kulkarni, Milind V Ugale, Chitra K |
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SubjectTerms | Anodes Batteries Chemical synthesis Conductivity Doping Electrochemical analysis Electrochemistry Electrode materials Lithium Lithium-ion batteries Nanostructure Rechargeable batteries Sodium Sodium-ion batteries Specific capacity Structural stability Tin Tin compounds |
Title | Synergy of a heteroatom (P–F) in nanostructured Sn3O4 as an anode for sodium-ion batteries |
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