Yolk-shell structured Mo/MoO2 composite microspheres function as high-performance anode materials for lithium-ion batteries

Wang, Wei; Shi, Gege; Cai, Haojie; Zhao, Chaoyue; Wu, Jianzhong; Yu, Youren; Hu, Jinxing; Fang, Zhenxing; Jin, Yan; Liu, Bing

doi:10.1016/j.jallcom.2019.03.401

Cited by 20 publications

(9 citation statements)

References 45 publications

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“…In order to meet the needs of practical applications, the EFs and sensitivity need to be further enhanced. The metal molybdenum (Mo) with excellent conductivity has often been used as a lithium battery or as a cocatalyst. , In our experiment, we found that combining Mo nanoparticles with plasmonic MoO 2 can enhance the SPR effect and thus prominently improve the SERS performance of MoO 2 . The use of Mo/MoO 2 hybrid composites as highly active SERS substrates has not been reported.…”

Section: Introductionmentioning

confidence: 69%

Plasmonic Hybrid Mo/MoO₂ Nanospheres as Surface-Enhanced Raman Scattering Substrates for Molecular Detection

Zhou

Zhao

Xie

et al. 2020

ACS Appl. Nano Mater.

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Here, the plasmonic Mo/MoO2 hybrid nanospheres have been fabricated through a simple hydrothermal self-assembly process. The Mo/MoO2 nanospheres assembled from plasmonic Mo and MoO2 nanoparticles have loose nanostructures and exhibit an enhanced surface plasmon resonance (SPR) effect in the visible-light range. The Mo/MoO2 nanospheres are used as surface-enhanced Raman spectroscopy (SERS) substrates for the detection of trace organic pollutants, such as rhodamine 6G (R6G), rhodamine B, and methylene blue, which exhibit ultrasensitive SERS activity. The minimum limit of detection for R6G is 1.0 × 10–10 M, and the highest enhancement factor is up to 6.2 × 107. The theoretical calculations and experimental results indicate that the extraordinary sensitivity is mainly ascribed to the synergistic plasmonic effects between Mo and MoO2 nanoparticles in the hybrid nanospheres, which lead to the strong electromagnetic coupling between substrates and target molecules. This study provides an approach to optimizing the SERS performance of semiconductor-based substrates.

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Section: Introductionmentioning

confidence: 69%

Plasmonic Hybrid Mo/MoO₂ Nanospheres as Surface-Enhanced Raman Scattering Substrates for Molecular Detection

Zhou

Zhao

Xie

et al. 2020

ACS Appl. Nano Mater.

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“…In addition, Mo 6+ is easily reduced, which causes the appearance of conversion type reactions at lower voltage vs. Li + /Li [ 20 , 22 ]. Mo-based oxides, dichalcogenide, and oxysalts have been investigated on their electrochemical properties as the anodic materials for LIBs, such as MoO 3 [ 24 , 25 ], MoO 2 [ 26 , 27 ], MoS 2 [ 28 , 29 ], MMoO 4 (M = Na, Fe, Ni, La, Zn, Ca) [ 21 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ], and MMo 2 O 7 (M = Na, Li, Ag) [ 18 , 19 , 20 ]. However, the electronic conductivities and long-term cycling performances of these materials remain to be improved.…”

Section: Introductionmentioning

confidence: 99%

A Bio-Inspired Nanotubular Na2MoO4/TiO2 Composite as a High-Performance Anodic Material for Lithium-Ion Batteries

2021

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A train of bio-inspired nanotubular Na2MoO4/TiO2 composites were synthesized by using a natural cellulose substance (e.g., commercial ordinary filter paper) as the structural template. The TiO2 gel films were coated on the cellulose nanofiber surfaces via a sol-gel method firstly, followed with the deposition of the poly(diallyldimethylammonium chloride)/Na2MoO4 (PDDA/Na2MoO4) bi-layers several times, through the layer-by-layer self-assembly route, yielding the (PDDA/Na2MoO4)n/TiO2-gel/cellulose composite, which was calcined in air to give various Na2MoO4/TiO2 nanocomposites containing different Na2MoO4 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 TiO2 nanotubes anchored with the Na2MoO4 layers. When employed as anodic materials for lithium-ion batteries, those Na2MoO4/TiO2 nanocomposites exhibited promoted electrochemical performances in comparison with the Na2MoO4 powder and pure TiO2 nanotubes, which was resulted from the high capacity of the Na2MoO4 component and the buffering effects of the TiO2 nanotubes. Among all the nanotubular Na2MoO4/TiO2 composites, the one with a Na2MoO4 content of 41.4% showed the best electrochemical properties, such as the cycling stability with a capacity of 180.22 mAh g−1 after 200 charge/discharge cycles (current density: 100 mA g−1) and the optimal rate capability.

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“…Molybdenum oxide (MoO 2 ) is an intriguing anode material because the insertion and conversion behaviors are co-exhibited in a certain condition. MoO 2 has two different values of theoretical capacity: the theoretical capacity of bulk-sized MoO 2 (insertion type) is 209 mAh/g, while nano-sized MoO 2 (conversion type) is 838 mAh/g [ 141 , 142 ]. The insertion reaction is predominant with a fast electrochemical reaction and the conversion reaction is augmented with a slow electrochemical reaction because the cathodic reaction via conversion reaction occurs below 0.8 V [ 143 ].…”

Section: Conversion Reaction-based Storage Materialsmentioning

confidence: 99%

A Review of Recent Advancements in Electrospun Anode Materials to Improve Rechargeable Lithium Battery Performance

Lee

2020

Polymers

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Although lithium-ion batteries have already had a considerable impact on making our lives smarter, healthier, and cleaner by powering smartphones, wearable devices, and electric vehicles, demands for significant improvement in battery performance have grown with the continuous development of electronic devices. Developing novel anode materials offers one of the most promising routes to meet these demands and to resolve issues present in existing graphite anodes, such as a low theoretical capacity and poor rate capabilities. Significant improvements over current commercial batteries have been identified using the electrospinning process, owing to a simple processing technique and a wide variety of electrospinnable materials. It is important to understand previous work on nanofiber anode materials to establish strategies that encourage the implementation of current technological developments into commercial lithium-ion battery production, and to advance the design of novel nanofiber anode materials that will be used in the next-generation of batteries. This review identifies previous research into electrospun nanofiber anode materials based on the type of electrochemical reactions present and provides insights that can be used to improve conventional lithium-ion battery performances and to pioneer novel manufacturing routes that can successfully produce the next generation of batteries.

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Yolk-shell structured Mo/MoO2 composite microspheres function as high-performance anode materials for lithium-ion batteries

Cited by 20 publications

References 45 publications

Plasmonic Hybrid Mo/MoO₂ Nanospheres as Surface-Enhanced Raman Scattering Substrates for Molecular Detection

Plasmonic Hybrid Mo/MoO₂ Nanospheres as Surface-Enhanced Raman Scattering Substrates for Molecular Detection

A Bio-Inspired Nanotubular Na2MoO4/TiO2 Composite as a High-Performance Anodic Material for Lithium-Ion Batteries

A Review of Recent Advancements in Electrospun Anode Materials to Improve Rechargeable Lithium Battery Performance

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Yolk-shell structured Mo/MoO2 composite microspheres function as high-performance anode materials for lithium-ion batteries

Cited by 20 publications

References 45 publications

Plasmonic Hybrid Mo/MoO2 Nanospheres as Surface-Enhanced Raman Scattering Substrates for Molecular Detection

Plasmonic Hybrid Mo/MoO2 Nanospheres as Surface-Enhanced Raman Scattering Substrates for Molecular Detection

A Bio-Inspired Nanotubular Na2MoO4/TiO2 Composite as a High-Performance Anodic Material for Lithium-Ion Batteries

A Review of Recent Advancements in Electrospun Anode Materials to Improve Rechargeable Lithium Battery Performance

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Plasmonic Hybrid Mo/MoO₂ Nanospheres as Surface-Enhanced Raman Scattering Substrates for Molecular Detection

Plasmonic Hybrid Mo/MoO₂ Nanospheres as Surface-Enhanced Raman Scattering Substrates for Molecular Detection