Enhanced Electrochemical Performance of Dual-Ion Batteries with T-Nb<sub>2</sub>O<sub>5</sub>/Nitrogen-Doped Three-Dimensional Porous Carbon Composites
Niobium pentoxide (T-Nb<sub>2</sub>O<sub>5</sub>) is a promising anode material for dual-ion batteries due to its high lithium capacity and fast ion storage and release mechanism. However, T-Nb<sub>2</sub>O<sub>5</sub> suffers from the disadvantages of...
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MDPI AG
2025-01-01
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| Series: | Molecules |
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| author | Chen Qi Duo Ying Cheng Ma Wenming Qiao Jitong Wang Licheng Ling |
| author_facet | Chen Qi Duo Ying Cheng Ma Wenming Qiao Jitong Wang Licheng Ling |
| author_sort | Chen Qi |
| collection | DOAJ |
| description | Niobium pentoxide (T-Nb<sub>2</sub>O<sub>5</sub>) is a promising anode material for dual-ion batteries due to its high lithium capacity and fast ion storage and release mechanism. However, T-Nb<sub>2</sub>O<sub>5</sub> suffers from the disadvantages of poor electrical conductivity and fast cycling capacity decay. Herein, a nitrogen-doped three-dimensional porous carbon (RMF) was prepared for loading niobium pentoxide to construct a composite system with excellent electrochemical performance. The obtained T-Nb<sub>2</sub>O<sub>5</sub>/RMF composites have a well-developed pore structure and a high specific surface area of 1568.5 m<sup>2</sup> g<sup>−1</sup>, which could effectively increase the contact area between the material and electrolyte, improving the electrode reaction and lithium-ion transfer diffusion. Nitrogen doping increased surface polarity, creating more active sites and accelerating the electrode reaction rate. The introduction of T-Nb<sub>2</sub>O<sub>5</sub> imparted high power density and excellent cycling stability to the battery. The composites exhibited good electrochemical performance when used as dual-ion battery anode, with a stable cycle life of 207.2 mA h g<sup>−1</sup> at 1 A g<sup>−1</sup> current density after 650 cycles and great rate performance of 181.5 mA h g<sup>−1</sup> at 5A g<sup>−1</sup> was also obtained. This work provides the possibility for applying T-Nb<sub>2</sub>O<sub>5</sub>/RMF as an anode for a high-performance dual-ion battery. |
| format | Article |
| id | doaj-art-82b7471538324f4f82573705daf267f6 |
| institution | Kabale University |
| issn | 1420-3049 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj-art-82b7471538324f4f82573705daf267f62025-01-24T13:43:11ZengMDPI AGMolecules1420-30492025-01-0130222710.3390/molecules30020227Enhanced Electrochemical Performance of Dual-Ion Batteries with T-Nb<sub>2</sub>O<sub>5</sub>/Nitrogen-Doped Three-Dimensional Porous Carbon CompositesChen Qi0Duo Ying1Cheng Ma2Wenming Qiao3Jitong Wang4Licheng Ling5State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, ChinaState Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, ChinaState Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, ChinaState Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, ChinaState Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, ChinaState Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, ChinaNiobium pentoxide (T-Nb<sub>2</sub>O<sub>5</sub>) is a promising anode material for dual-ion batteries due to its high lithium capacity and fast ion storage and release mechanism. However, T-Nb<sub>2</sub>O<sub>5</sub> suffers from the disadvantages of poor electrical conductivity and fast cycling capacity decay. Herein, a nitrogen-doped three-dimensional porous carbon (RMF) was prepared for loading niobium pentoxide to construct a composite system with excellent electrochemical performance. The obtained T-Nb<sub>2</sub>O<sub>5</sub>/RMF composites have a well-developed pore structure and a high specific surface area of 1568.5 m<sup>2</sup> g<sup>−1</sup>, which could effectively increase the contact area between the material and electrolyte, improving the electrode reaction and lithium-ion transfer diffusion. Nitrogen doping increased surface polarity, creating more active sites and accelerating the electrode reaction rate. The introduction of T-Nb<sub>2</sub>O<sub>5</sub> imparted high power density and excellent cycling stability to the battery. The composites exhibited good electrochemical performance when used as dual-ion battery anode, with a stable cycle life of 207.2 mA h g<sup>−1</sup> at 1 A g<sup>−1</sup> current density after 650 cycles and great rate performance of 181.5 mA h g<sup>−1</sup> at 5A g<sup>−1</sup> was also obtained. This work provides the possibility for applying T-Nb<sub>2</sub>O<sub>5</sub>/RMF as an anode for a high-performance dual-ion battery.https://www.mdpi.com/1420-3049/30/2/227dual-ion batteriesNb<sub>2</sub>O<sub>5</sub>anodestructure designNitrogen doping |
| spellingShingle | Chen Qi Duo Ying Cheng Ma Wenming Qiao Jitong Wang Licheng Ling Enhanced Electrochemical Performance of Dual-Ion Batteries with T-Nb<sub>2</sub>O<sub>5</sub>/Nitrogen-Doped Three-Dimensional Porous Carbon Composites Molecules dual-ion batteries Nb<sub>2</sub>O<sub>5</sub> anode structure design Nitrogen doping |
| title | Enhanced Electrochemical Performance of Dual-Ion Batteries with T-Nb<sub>2</sub>O<sub>5</sub>/Nitrogen-Doped Three-Dimensional Porous Carbon Composites |
| title_full | Enhanced Electrochemical Performance of Dual-Ion Batteries with T-Nb<sub>2</sub>O<sub>5</sub>/Nitrogen-Doped Three-Dimensional Porous Carbon Composites |
| title_fullStr | Enhanced Electrochemical Performance of Dual-Ion Batteries with T-Nb<sub>2</sub>O<sub>5</sub>/Nitrogen-Doped Three-Dimensional Porous Carbon Composites |
| title_full_unstemmed | Enhanced Electrochemical Performance of Dual-Ion Batteries with T-Nb<sub>2</sub>O<sub>5</sub>/Nitrogen-Doped Three-Dimensional Porous Carbon Composites |
| title_short | Enhanced Electrochemical Performance of Dual-Ion Batteries with T-Nb<sub>2</sub>O<sub>5</sub>/Nitrogen-Doped Three-Dimensional Porous Carbon Composites |
| title_sort | enhanced electrochemical performance of dual ion batteries with t nb sub 2 sub o sub 5 sub nitrogen doped three dimensional porous carbon composites |
| topic | dual-ion batteries Nb<sub>2</sub>O<sub>5</sub> anode structure design Nitrogen doping |
| url | https://www.mdpi.com/1420-3049/30/2/227 |
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