Ga<sub>2</sub>Te<sub>3</sub>-Based Composite Anodes for High-Performance Sodium-Ion Batteries
Recently, metal chalcogenides have received considerable attention as prospective anode materials for sodium-ion batteries (SIBs) because of their high theoretical capacities based on their alloying or conversion reactions. Herein, we demonstrate a gallium(III) telluride (Ga<sub>2</sub>T...
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MDPI AG
2022-09-01
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| author | Vo Pham Hoang Huy Il Tae Kim Jaehyun Hur |
| author_facet | Vo Pham Hoang Huy Il Tae Kim Jaehyun Hur |
| author_sort | Vo Pham Hoang Huy |
| collection | DOAJ |
| description | Recently, metal chalcogenides have received considerable attention as prospective anode materials for sodium-ion batteries (SIBs) because of their high theoretical capacities based on their alloying or conversion reactions. Herein, we demonstrate a gallium(III) telluride (Ga<sub>2</sub>Te<sub>3</sub>)-based ternary composite (Ga<sub>2</sub>Te<sub>3</sub>–TiO<sub>2</sub>–C) synthesized via a simple high-energy ball mill as a great candidate SIB anode material for the first time. The electrochemical performance, as well as the phase transition mechanism of Ga<sub>2</sub>Te<sub>3</sub> during sodiation/desodiation, is investigated. Furthermore, the effect of C content on the performance of Ga<sub>2</sub>Te<sub>3</sub>–TiO<sub>2</sub>–C is studied using various electrochemical analyses. As a result, Ga<sub>2</sub>Te<sub>3</sub>–TiO<sub>2</sub>–C with an optimum carbon content of 10% (Ga<sub>2</sub>Te<sub>3</sub>–TiO<sub>2</sub>–C(10%)) exhibited a specific capacity of 437 mAh·g<sup>−1</sup> after 300 cycles at 100 mA·g<sup>−1</sup> and a high-rate capability (capacity retention of 96% at 10 A·g<sup>−1</sup> relative to 0.1 A·g<sup>−1</sup>). The good electrochemical properties of Ga<sub>2</sub>Te<sub>3</sub>–TiO<sub>2</sub>–C(10%) benefited from the presence of the TiO<sub>2</sub>–C hybrid buffering matrix, which improved the mechanical integrity and electrical conductivity of the electrode. This research opens a new direction for the improvement of high-performance advanced SIB anodes with a simple synthesis process. |
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| spelling | doaj.art-dfdd32b7ef6c45f8b6cb0bb2fe8816252023-11-23T17:30:02ZengMDPI AGMaterials1996-19442022-09-011518623110.3390/ma15186231Ga<sub>2</sub>Te<sub>3</sub>-Based Composite Anodes for High-Performance Sodium-Ion BatteriesVo Pham Hoang Huy0Il Tae Kim1Jaehyun Hur2Department of Chemical and Biological Engineering, Gachon University, Seongnam 13120, Gyeonggi, KoreaDepartment of Chemical and Biological Engineering, Gachon University, Seongnam 13120, Gyeonggi, KoreaDepartment of Chemical and Biological Engineering, Gachon University, Seongnam 13120, Gyeonggi, KoreaRecently, metal chalcogenides have received considerable attention as prospective anode materials for sodium-ion batteries (SIBs) because of their high theoretical capacities based on their alloying or conversion reactions. Herein, we demonstrate a gallium(III) telluride (Ga<sub>2</sub>Te<sub>3</sub>)-based ternary composite (Ga<sub>2</sub>Te<sub>3</sub>–TiO<sub>2</sub>–C) synthesized via a simple high-energy ball mill as a great candidate SIB anode material for the first time. The electrochemical performance, as well as the phase transition mechanism of Ga<sub>2</sub>Te<sub>3</sub> during sodiation/desodiation, is investigated. Furthermore, the effect of C content on the performance of Ga<sub>2</sub>Te<sub>3</sub>–TiO<sub>2</sub>–C is studied using various electrochemical analyses. As a result, Ga<sub>2</sub>Te<sub>3</sub>–TiO<sub>2</sub>–C with an optimum carbon content of 10% (Ga<sub>2</sub>Te<sub>3</sub>–TiO<sub>2</sub>–C(10%)) exhibited a specific capacity of 437 mAh·g<sup>−1</sup> after 300 cycles at 100 mA·g<sup>−1</sup> and a high-rate capability (capacity retention of 96% at 10 A·g<sup>−1</sup> relative to 0.1 A·g<sup>−1</sup>). The good electrochemical properties of Ga<sub>2</sub>Te<sub>3</sub>–TiO<sub>2</sub>–C(10%) benefited from the presence of the TiO<sub>2</sub>–C hybrid buffering matrix, which improved the mechanical integrity and electrical conductivity of the electrode. This research opens a new direction for the improvement of high-performance advanced SIB anodes with a simple synthesis process.https://www.mdpi.com/1996-1944/15/18/6231Ga<sub>2</sub>Te<sub>3</sub>Ga<sub>2</sub>Te<sub>3</sub>–TiO<sub>2</sub>–CanodesNa ionsodiation/desodiation |
| spellingShingle | Vo Pham Hoang Huy Il Tae Kim Jaehyun Hur Ga<sub>2</sub>Te<sub>3</sub>-Based Composite Anodes for High-Performance Sodium-Ion Batteries Materials Ga<sub>2</sub>Te<sub>3</sub> Ga<sub>2</sub>Te<sub>3</sub>–TiO<sub>2</sub>–C anodes Na ion sodiation/desodiation |
| title | Ga<sub>2</sub>Te<sub>3</sub>-Based Composite Anodes for High-Performance Sodium-Ion Batteries |
| title_full | Ga<sub>2</sub>Te<sub>3</sub>-Based Composite Anodes for High-Performance Sodium-Ion Batteries |
| title_fullStr | Ga<sub>2</sub>Te<sub>3</sub>-Based Composite Anodes for High-Performance Sodium-Ion Batteries |
| title_full_unstemmed | Ga<sub>2</sub>Te<sub>3</sub>-Based Composite Anodes for High-Performance Sodium-Ion Batteries |
| title_short | Ga<sub>2</sub>Te<sub>3</sub>-Based Composite Anodes for High-Performance Sodium-Ion Batteries |
| title_sort | ga sub 2 sub te sub 3 sub based composite anodes for high performance sodium ion batteries |
| topic | Ga<sub>2</sub>Te<sub>3</sub> Ga<sub>2</sub>Te<sub>3</sub>–TiO<sub>2</sub>–C anodes Na ion sodiation/desodiation |
| url | https://www.mdpi.com/1996-1944/15/18/6231 |
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