Al/Mn co-doping endows V2O5•4VO2 cathode with enhanced lithium storage performance

Zhang, Shuchao; Zou, Zhengguang; Zhong, Shenglin; Meng, Jianying; Liu, Xin; Xu, Shuxin; Li, You; Peng, Xiaoxiao; Ling, Wenqin

doi:10.1016/j.electacta.2021.139483

Cited by 16 publications

(5 citation statements)

References 51 publications

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“…It is noteworthy that the value of V 4+ : (V 4+ + V 5+ ) in the doped 1Fe-V 2 O 5 , 3Fe-V 2 O 5, and 5Fe-V 2 O 5 was 12.6%, 15.5%, 21.0% and distinguished from the value 11.3% in the undoped 0Fe-V 2 O 5 . This is attributed to the partial occupation of V 5+ by the doped Fe 3+ , which created oxygen vacancies and increased the conductivity [26,27]. Note that the value increased as the doping amount added, which is consistent with result of the N 2 adsorption-desorption isotherm curves.…”

Section: Resultssupporting

confidence: 80%

“…It draws the conclusion that the appropriate amount of iron source doping not only increased the capacity of V 2 O 5 from 280 to 436 mAh g −1 , but also increased its cyclic retention to some extent. Combined with the previous section, we can confirm that the improvement in doped V 2 O 5 material properties come from the increased specific surface area and expanded crystal plane spacing, as well as the oxygen vacancies and more stable crystal structure brought about by the introduction of dopants [26][27][28]. Additionally, the generation of low-valent vanadium in V 2 O 5 is promoted, thus improving the electrochemical properties of the material.…”

Section: Resultssupporting

confidence: 77%

“…It can be observed in figure 3(d) that the diffraction peaks from 0Fe-V 2 O 5 to 5Fe-V 2 O 5 (010) crystal plane were shifted to the left to some extent, corresponding to the expanded crystal plane spacing in the previous TEM results which can also prove the successful incorporation of larger radius iron ions into the V 2 O 5 lattice. At the same time, it means that the appropriated amount of Fe 3+ doping allowed the material to hold more lithium ions, thus increasing its lithium storage capacity [26].…”

Section: Resultsmentioning

confidence: 99%

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Fe-doped V₂O₅ layered nanowire cathode material with high lithium storage performance

et al. 2023

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As a lithium-ion battery cathode material with high theoretical capacity, the application of V2O5 is limited by its unstable structure and low intrinsic conductivity. In this paper, we report a Fe doped V2O5 nanowire with a layered structure of 200-300 nm diameter prepared by electrostatic spinning technique. The 3Fe-V2O5 electrode exhibited a superb capacity of 436.9 mAh/g in the first cycle when tested in the voltage range of 2.0-4.0 V at current density of 100 mA/g, far exceeding its theoretical capacity (294 mAh/g), and the high capacity of 312 mAh/g was still maintained after 50 cycles. The superb performance is mainly attributed to its unique layered nanowire structure and the enhanced electrical conductivity as well as optimized structure brought by Fe doping. This work made the homogeneous doping and nanosizing of the material easily achieved through electrostatic spinning technology, leading to an increase in the initial capacity of the V2O5 cathode material and the cycling stability compared to the pure V2O5, which is an extremely meaningful exploration

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Section: Resultssupporting

confidence: 80%

Section: Resultssupporting

confidence: 77%

Section: Resultsmentioning

confidence: 99%

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Fe-doped V₂O₅ layered nanowire cathode material with high lithium storage performance

et al. 2023

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“…We introduced Al 3+ , Cr 3+ , Cu 2+ , and Fe 3+ into the NVO system, and consistent with the results of our previous work, Al 3+ has the best performance. The introduction of Al 3+ can form [AlO 6 ] octahedra, [ 45 ] which can synergistically stabilize the crystal structure with the remaining NH 4 + , while further weakening the electrostatic interaction between Zn 2+ and the VO backbone and promoting the diffusion of Zn 2+ . [ 44 ] To this end, we synthesized Al‐doped NVO (AlNVO) via a simple one‐step hydrothermal method.…”

Section: Introductionmentioning

confidence: 99%

“Dual‐ Engineering” Strategy to Regulate NH₄V₄O₁₀ as Cathodes for High‐Performance Aqueous Zinc Ion Batteries

Liu,

Zhang,

Cheng

et al. 2023

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Aqueous zinc ion batteries (AZIBs) have attracted attention as a promising candidate for secondary battery energy storage due to their safety and environmental benefits. However, the vanadium‐based cathode material NH4V4O10 has the problem of structural instability. In this paper, it is found by density functional theory calculation that excessive NH4+ located in the interlayer will repel the Zn2+ during the process of Zn2+ insertion. This results in the distortion of the layered structure, further affects the diffusion of Zn2+ and reduces the reaction kinetics. Therefore, part of the NH4+ is removed by heat treatment. In addition, the introduction of Al3+ into the material by hydrothermal method is able to further enhance its zinc storage properties. This dual‐engineering strategy shows excellent electrochemical performance (578.2 mAh g−1 at 0.2 A g−1). This study provides valuable insights for the development of high performance AZIBs cathode materials.

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“…In addition, some researchers have suggested that the elemental doping with heteroatoms (e.g., N, − P, S, etc.) not only inherently reduces the electron transfer resistance of TiO 2 material but also introduces a large number of defects that cause lattice distortions and increase the active site of the reaction. , Ivanov et al synthesized sulfur and carbon codoped anatase TiO 2 nanoparticles using a one-step method based on the interaction of thiourea and titanate. The reversible capacity (initial value of 210 mAh g –1 ) and chemical reaction kinetics of the doped TiO 2 were significantly enhanced, and 83% capacity retention was still achieved after 500 cycles.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Modification of Dragon fruit-like TiO₂ Nanoarchitectures to Enhance Lithium Storage

Jia,

Sun,

et al. 2023

ACS Appl. Nano Mater.

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Titanium dioxide (TiO 2 ) is a promising anode material for lithium-ion batteries with the characteristics of highly stable structure and excellent safety, while the application is constrained by its inferior electrical conductivity and sluggish lithium-ion diffusion kinetics. Herein, H 2 Ti 4 O 9 was prepared as a precursor, and it was wrapped with polyvinylpyrrolidone (PVP) as the nitrogen and carbon sources. Then, the N-doped carbon-filled TiO 2 nanocrystals (N-TiO 2 /C), which had a unique dragon fruit structure with TiO 2 nanocrystals acting as seeds and carbon acting as the flesh, were successfully prepared from PVP-coated H 2 Ti 4 O 9 by one-step heat treatment. It is noteworthy that four modification methods, including carbon filling, nanosizing, nitrogen doping, and morphological designing, are all accomplished simultaneously during this process. The N-TiO 2 /C composite exhibits an outstanding stable capacity of 444.6 mAh g −1 after 600 cycles at 1 A g −1 , and it possesses a reversible capacity of 146.7 mAh g −1 at 5 A g −1 . The superior electrochemical capacity can be attributed to the distinctive dragon fruit structure along with nitrogen doping and carbon filling. The ingenious modification strategy can extend to the investigation on the other oxide anode materials.

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Al/Mn co-doping endows V2O5•4VO2 cathode with enhanced lithium storage performance

Cited by 16 publications

References 51 publications

Fe-doped V₂O₅ layered nanowire cathode material with high lithium storage performance

Fe-doped V₂O₅ layered nanowire cathode material with high lithium storage performance

“Dual‐ Engineering” Strategy to Regulate NH₄V₄O₁₀ as Cathodes for High‐Performance Aqueous Zinc Ion Batteries

Simultaneous Modification of Dragon fruit-like TiO₂ Nanoarchitectures to Enhance Lithium Storage

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Al/Mn co-doping endows V2O5•4VO2 cathode with enhanced lithium storage performance

Cited by 16 publications

References 51 publications

Fe-doped V2O5 layered nanowire cathode material with high lithium storage performance

Fe-doped V2O5 layered nanowire cathode material with high lithium storage performance

“Dual‐ Engineering” Strategy to Regulate NH4V4O10 as Cathodes for High‐Performance Aqueous Zinc Ion Batteries

Simultaneous Modification of Dragon fruit-like TiO2 Nanoarchitectures to Enhance Lithium Storage

Contact Info

Product

Resources

About

Fe-doped V₂O₅ layered nanowire cathode material with high lithium storage performance

Fe-doped V₂O₅ layered nanowire cathode material with high lithium storage performance

“Dual‐ Engineering” Strategy to Regulate NH₄V₄O₁₀ as Cathodes for High‐Performance Aqueous Zinc Ion Batteries

Simultaneous Modification of Dragon fruit-like TiO₂ Nanoarchitectures to Enhance Lithium Storage