A Bio-Inspired Nanotubular Na<sub>2</sub>MoO<sub>4</sub>/TiO<sub>2</sub> Composite as a High-Performance Anodic Material for Lithium-Ion Batteries
A train of bio-inspired nanotubular Na<sub>2</sub>MoO<sub>4</sub>/TiO<sub>2</sub> composites were synthesized by using a natural cellulose substance (e.g., commercial ordinary filter paper) as the structural template. The TiO<sub>2</sub> gel films were...
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| Online Access: | https://www.mdpi.com/1996-1944/14/2/357 |
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| author | Bo Yu Zehao Lin Jianguo Huang |
| author_facet | Bo Yu Zehao Lin Jianguo Huang |
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| description | A train of bio-inspired nanotubular Na<sub>2</sub>MoO<sub>4</sub>/TiO<sub>2</sub> composites were synthesized by using a natural cellulose substance (e.g., commercial ordinary filter paper) as the structural template. The TiO<sub>2</sub> gel films were coated on the cellulose nanofiber surfaces via a sol-gel method firstly, followed with the deposition of the poly(diallyldimethylammonium chloride)/Na<sub>2</sub>MoO<sub>4</sub> (PDDA/Na<sub>2</sub>MoO<sub>4</sub>) bi-layers several times, through the layer-by-layer self-assembly route, yielding the (PDDA/Na<sub>2</sub>MoO<sub>4</sub>)<sub>n</sub>/TiO<sub>2</sub>-gel/cellulose composite, which was calcined in air to give various Na<sub>2</sub>MoO<sub>4</sub>/TiO<sub>2</sub> nanocomposites containing different Na<sub>2</sub>MoO<sub>4</sub> contents (15.4, 24.1, and 41.4%). The resultant nanocomposites all inherited the three-dimensionally porous network structure of the premier cellulose substance, which were formed by hierarchical TiO<sub>2</sub> nanotubes anchored with the Na<sub>2</sub>MoO<sub>4</sub> layers. When employed as anodic materials for lithium-ion batteries, those Na<sub>2</sub>MoO<sub>4</sub>/TiO<sub>2</sub> nanocomposites exhibited promoted electrochemical performances in comparison with the Na<sub>2</sub>MoO<sub>4</sub> powder and pure TiO<sub>2</sub> nanotubes, which was resulted from the high capacity of the Na<sub>2</sub>MoO<sub>4</sub> component and the buffering effects of the TiO<sub>2</sub> nanotubes. Among all the nanotubular Na<sub>2</sub>MoO<sub>4</sub>/TiO<sub>2</sub> composites, the one with a Na<sub>2</sub>MoO<sub>4</sub> content of 41.4% showed the best electrochemical properties, such as the cycling stability with a capacity of 180.22 mAh g<sup>−1</sup> after 200 charge/discharge cycles (current density: 100 mA g<sup>−1</sup>) and the optimal rate capability. |
| first_indexed | 2024-03-09T04:58:41Z |
| format | Article |
| id | doaj.art-fbfc01cb432a4e03aa2c1452dbf4d5c5 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T04:58:41Z |
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| spelling | doaj.art-fbfc01cb432a4e03aa2c1452dbf4d5c52023-12-03T13:03:25ZengMDPI AGMaterials1996-19442021-01-0114235710.3390/ma14020357A Bio-Inspired Nanotubular Na<sub>2</sub>MoO<sub>4</sub>/TiO<sub>2</sub> Composite as a High-Performance Anodic Material for Lithium-Ion BatteriesBo Yu0Zehao Lin1Jianguo Huang2Department of Chemistry, Zhejiang University, Hangzhou 310027, ChinaDepartment of Chemistry, Zhejiang University, Hangzhou 310027, ChinaDepartment of Chemistry, Zhejiang University, Hangzhou 310027, ChinaA train of bio-inspired nanotubular Na<sub>2</sub>MoO<sub>4</sub>/TiO<sub>2</sub> composites were synthesized by using a natural cellulose substance (e.g., commercial ordinary filter paper) as the structural template. The TiO<sub>2</sub> gel films were coated on the cellulose nanofiber surfaces via a sol-gel method firstly, followed with the deposition of the poly(diallyldimethylammonium chloride)/Na<sub>2</sub>MoO<sub>4</sub> (PDDA/Na<sub>2</sub>MoO<sub>4</sub>) bi-layers several times, through the layer-by-layer self-assembly route, yielding the (PDDA/Na<sub>2</sub>MoO<sub>4</sub>)<sub>n</sub>/TiO<sub>2</sub>-gel/cellulose composite, which was calcined in air to give various Na<sub>2</sub>MoO<sub>4</sub>/TiO<sub>2</sub> nanocomposites containing different Na<sub>2</sub>MoO<sub>4</sub> contents (15.4, 24.1, and 41.4%). The resultant nanocomposites all inherited the three-dimensionally porous network structure of the premier cellulose substance, which were formed by hierarchical TiO<sub>2</sub> nanotubes anchored with the Na<sub>2</sub>MoO<sub>4</sub> layers. When employed as anodic materials for lithium-ion batteries, those Na<sub>2</sub>MoO<sub>4</sub>/TiO<sub>2</sub> nanocomposites exhibited promoted electrochemical performances in comparison with the Na<sub>2</sub>MoO<sub>4</sub> powder and pure TiO<sub>2</sub> nanotubes, which was resulted from the high capacity of the Na<sub>2</sub>MoO<sub>4</sub> component and the buffering effects of the TiO<sub>2</sub> nanotubes. Among all the nanotubular Na<sub>2</sub>MoO<sub>4</sub>/TiO<sub>2</sub> composites, the one with a Na<sub>2</sub>MoO<sub>4</sub> content of 41.4% showed the best electrochemical properties, such as the cycling stability with a capacity of 180.22 mAh g<sup>−1</sup> after 200 charge/discharge cycles (current density: 100 mA g<sup>−1</sup>) and the optimal rate capability.https://www.mdpi.com/1996-1944/14/2/357biomimetic synthesiscelluloselayer-by-layer self-assemblytitaniasodium molybdatelithium-ion batteries |
| spellingShingle | Bo Yu Zehao Lin Jianguo Huang A Bio-Inspired Nanotubular Na<sub>2</sub>MoO<sub>4</sub>/TiO<sub>2</sub> Composite as a High-Performance Anodic Material for Lithium-Ion Batteries Materials biomimetic synthesis cellulose layer-by-layer self-assembly titania sodium molybdate lithium-ion batteries |
| title | A Bio-Inspired Nanotubular Na<sub>2</sub>MoO<sub>4</sub>/TiO<sub>2</sub> Composite as a High-Performance Anodic Material for Lithium-Ion Batteries |
| title_full | A Bio-Inspired Nanotubular Na<sub>2</sub>MoO<sub>4</sub>/TiO<sub>2</sub> Composite as a High-Performance Anodic Material for Lithium-Ion Batteries |
| title_fullStr | A Bio-Inspired Nanotubular Na<sub>2</sub>MoO<sub>4</sub>/TiO<sub>2</sub> Composite as a High-Performance Anodic Material for Lithium-Ion Batteries |
| title_full_unstemmed | A Bio-Inspired Nanotubular Na<sub>2</sub>MoO<sub>4</sub>/TiO<sub>2</sub> Composite as a High-Performance Anodic Material for Lithium-Ion Batteries |
| title_short | A Bio-Inspired Nanotubular Na<sub>2</sub>MoO<sub>4</sub>/TiO<sub>2</sub> Composite as a High-Performance Anodic Material for Lithium-Ion Batteries |
| title_sort | bio inspired nanotubular na sub 2 sub moo sub 4 sub tio sub 2 sub composite as a high performance anodic material for lithium ion batteries |
| topic | biomimetic synthesis cellulose layer-by-layer self-assembly titania sodium molybdate lithium-ion batteries |
| url | https://www.mdpi.com/1996-1944/14/2/357 |
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