V2O5 Nanospheres with Mixed Vanadium Valences as High Electrochemically Active Aqueous Zinc-Ion Battery Cathode

Abstract A V4+-V2O5 cathode with mixed vanadium valences was prepared via a novel synthetic method using VOOH as the precursor, and its zinc-ion storage performance was evaluated. The products are hollow spheres consisting of nanoflakes. The V4+-V2O5 cathode exhibits a prominent cycling performance, with a specific capacity of 140 mAh g−1 after 1000 cycles at 10 A g−1, and an excellent rate capability. The good electrochemical performance is attributed to the presence of V4+, which leads to higher electrochemical activity, lower polarization, faster ion diffusion, and higher electrical conductivity than V2O5 without V4+. This engineering strategy of valence state manipulation may pave the way for designing high-performance cathodes for elucidating advanced battery chemistry.

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Hierarchical NiCo2S4 hollow spheres as a high performance anode for lithium ion batteries

RSC Advances ◽

10.1039/c5ra14412d ◽

2015 ◽

Vol 5 (103) ◽

pp. 84711-84717 ◽

Cited By ~ 32

Author(s):

Rencheng Jin ◽

Dongmei Liu ◽

Chunping Liu ◽

Gang Liu

Keyword(s):

Lithium Ion Batteries ◽

High Performance ◽

Specific Capacity ◽

Hollow Spheres ◽

Rate Capability ◽

Lithium Ion ◽

Cycling Performance ◽

High Specific Capacity ◽

Good Rate Capability

Hierarchical NiCo2S4 hollow spheres have been fabricated, which exhibit a high specific capacity, good rate capability and stable cycling performance.

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Flower-like C@V2O5 microspheres as highly electrochemically active cathode in aqueous zinc-ion batteries

Materials Express ◽

10.1166/mex.2020.1804 ◽

2020 ◽

Vol 10 (10) ◽

pp. 1697-1703

Author(s):

Zebin Wu ◽

Wei Zhou ◽

Zhen Liu ◽

Yijie Zhou ◽

Guilin Zeng ◽

...

Keyword(s):

Electrochemical Properties ◽

Retention Rate ◽

Specific Capacity ◽

Cycling Performance ◽

Zinc Ion ◽

Rate Performance ◽

Capacity Retention ◽

Facile Hydrothermal Method ◽

High Specific Capacity ◽

Electrochemically Active

Flower-like C@V2O5 microspheres with high specific capacity were synthesized by a facile hydrothermal method. The microstructure, specific capacity and electrochemical properties of C@V2O5 microspheres were studied. Results showed that the C@V2O5 microspheres with a diameter of ∼3 m are covered over by V2O5 nanosheets, and therefore have a large surface area which is almost 5 times higher than that of pure V2O5 powders. Moreover, the initial specific capacity of C@V2O5 microsphere is as high as 247.42 mAh · g–1, and after 100 cycles, the capacity retention rate is still 99.4%. Compared with pure V2O5, flower-like C@V2O5 microspheres show higher discharge specific capacity, better rate performance and more stable cycling performance.

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Tailored nanoscale interface in a hierarchical carbon nanotube supported MoS2@MoO2-C electrode toward high performance sodium ion storage

Journal of Materials Chemistry A ◽

10.1039/d0ta03390a ◽

2020 ◽

Vol 8 (21) ◽

pp. 11011-11018 ◽

Cited By ~ 2

Author(s):

Chunrong Ma ◽

Zhixin Xu ◽

Jiali Jiang ◽

ZiFeng Ma ◽

Tristan Olsen ◽

...

Keyword(s):

Carbon Nanotube ◽

High Performance ◽

Specific Capacity ◽

Rate Capability ◽

Sodium Ion ◽

High Specific Capacity ◽

Ion Storage ◽

Excellent Cycling Stability ◽

Hierarchical Carbon ◽

Sodium Ion Storage

A MoS2/MoO2 heterointerface is created, with MoO2 nanocrystals anchored on MoS2 nanosheets, assisted by an N-doped carbon protecting layer, on CNTs. The electrode has a high specific capacity of ∼700 mA h g−1 at 0.2 A g−1, excellent cycling stability and rate capability.

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Li+ intercalated V2O5·nH2O with enlarged layer spacing and fast ion diffusion as an aqueous zinc-ion battery cathode

Energy & Environmental Science ◽

10.1039/c8ee01651h ◽

2018 ◽

Vol 11 (11) ◽

pp. 3157-3162 ◽

Cited By ~ 297

Author(s):

Yongqiang Yang ◽

Yan Tang ◽

Guozhao Fang ◽

Lutong Shan ◽

Jiasheng Guo ◽

...

Keyword(s):

Rate Capability ◽

Cycling Performance ◽

Zinc Ion ◽

High Rate ◽

Ion Diffusion ◽

High Rate Capability ◽

Layer Spacing ◽

Fast Ion

We report the chemical intercalation of Li+ into the interlayer of V2O5·nH2O with enlarged layer spacing and fast Zn2+ diffusion, resulting in high rate capability and excellent long-term cycling performance.

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NaV6O15 microflowers as a stable cathode material for high-performance aqueous zinc-ion batteries

RSC Advances ◽

10.1039/d0ra00365d ◽

2020 ◽

Vol 10 (12) ◽

pp. 6807-6813

Author(s):

Runxia Li ◽

Chao Guan ◽

Xiaofei Bian ◽

Xin Yu ◽

Fang Hu

Keyword(s):

Cathode Material ◽

High Performance ◽

Specific Capacity ◽

Cycling Performance ◽

Zinc Ion ◽

High Specific Capacity

NaV6O15 microflowers were synthesized as a stable cathode material for aqueous zinc ion batteries, which show a high specific capacity and excellent long-term cycling performance.

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Electrospun Li3V2(PO4)3 nanocubes/carbon nanofibers as free-standing cathodes for high-performance lithium-ion batteries

Journal of Materials Chemistry A ◽

10.1039/c9ta02740h ◽

2019 ◽

Vol 7 (24) ◽

pp. 14681-14688 ◽

Cited By ~ 11

Author(s):

Yi Peng ◽

Rou Tan ◽

Jianmin Ma ◽

Qiuhong Li ◽

Taihong Wang ◽

...

Keyword(s):

Ionic Liquid ◽

Carbon Nanofibers ◽

High Performance ◽

Specific Capacity ◽

Rate Capability ◽

Lithium Ion ◽

Cycling Performance ◽

Free Standing ◽

High Specific Capacity ◽

Electrospinning Method

A novel free-standing architecture with Li3V2(PO4)3 nanocubes embedded in N-doped carbon nanofibers has been successfully prepared through a facile ionic liquid-assisted electrospinning method, which exhibits an outstanding electrochemical performance including high specific capacity, stable cycling performance and superior rate capability.

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Unveiling the Interlayer Spacing Dependence of Zn-Ion Storage Performance in Layered Vanadium Phosphates

10.21203/rs.3.rs-258081/v1 ◽

2021 ◽

Author(s):

Linfeng Hu ◽

Zeyi Wu ◽

Chengjie Lu ◽

Fei Ye ◽

Ruilvjing Pang ◽

...

Keyword(s):

Specific Capacity ◽

Interlayer Spacing ◽

Zinc Ion ◽

Clear Understanding ◽

Diffusion Kinetics ◽

Ion Diffusion ◽

High Discharge ◽

Ion Storage ◽

Vanadium Phosphates ◽

Battery Application

Abstract Layered vanadium phosphate (VOPO4•2H2O) is reported as a promising cathode material for rechargeable aqueous Zn2+ batteries (ZIBs) owing to its unique layered framework and high discharge plateau. However, its sluggish Zn2+ diffusion kinetics, the low specific capacity and poor electrochemcial stability remains a major issue in battery application. In this work, a group of phenylamine (PA)-intercalated VOPO4•2H2O with varied interlayer spacing (14.8, 15.6 and 16.5 Å) is synthesized respectively via a solvothermal method for cathode of aqueous ZIBs. The specific capacity is quite dependent on d-spacing in PA-VOPO4•2H2O system followed by an approximate linear tendency, and the maximum interlayer spacing (16.5 Å phase) results in a discharge capacity of 268.2 mAh•g-1 at 0.1 A•g-1 with a high discharge plateau of ~ 1.3 V and an energy density of 328.5 Wh•Kg-1. Both of the experimental data and DFT calculation identify that the optimal 16.5 Å spacing can boost fast Zinc-ion diffusion with an ultrahigh diffusion coefficient of ~ 5.7 × 10-8 cm-2•s-1. The intercalation of PA molecules also significantly increases the hydrophobility in the aqueous electrolyte, resulting in the inhibiting the decomposition / dissolution of VOPO4•2H2O and remarkably improved cycling stability over 2000 cycles at 5.0 A•g-1 with a capacity retention of ~200 mAh•g-1. Our study provides a feasible solution on the sluggish Zn2+ diffusion kinetics and poor cyclstability, and also shows a clear understanding on the interlayer chemistry of layered phosphates towards aqueous Zinc-ion storage.

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Facile Synthesis of V2O5 Hollow Spheres as Advanced Cathodes for High-Performance Lithium-Ion Batteries

10.20944/preprints201701.0081.v1 ◽

2017 ◽

Author(s):

Xingyuan Zhang ◽

Jian-Gan Wang ◽

Huanyan Liu ◽

Hongzhen Liu ◽

Bingqing Wei

Keyword(s):

Lithium Ion Batteries ◽

High Performance ◽

Specific Capacity ◽

Hollow Spheres ◽

Three Dimensional ◽

Rate Capability ◽

Lithium Ion ◽

Hollow Structures ◽

Hollow Interior ◽

Synthesis Strategy

Three-dimensional V2O5 hollow structures have been prepared through a simple synthesis strategy combining solvothermal treatment and a subsequent thermal annealing. The V2O5 materials are composed of microspheres 2–3 μm in diameter and with a distinct hollow interior. The as-synthesized V2O5 hollow microspheres, when evaluated as a cathode material for lithium-ion batteries, can deliver a specific capacity as high as 273 mAh·g−1 at 0.2 C. Benefiting from the hollow structures that afford fast electrolyte transport and volume accommodation, the V2O5 cathode also exhibits a superior rate capability and excellent cycling stability. The good Li-ion storage performance demonstrates the great potential of this unique V2O5 hollow material as a high-performance cathode for lithium-ion batteries.

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Effects of F-Doping on the Electrochemical Performance of Na2Ti3O7 as an Anode for Sodium-Ion Batteries

Materials ◽

10.3390/ma11112206 ◽

2018 ◽

Vol 11 (11) ◽

pp. 2206 ◽

Cited By ~ 8

Author(s):

Zehua Chen ◽

Liang Lu ◽

Yu Gao ◽

Qixiang Zhang ◽

Chuanxiang Zhang ◽

...

Keyword(s):

Crystal Structure ◽

Electrochemical Performance ◽

Specific Capacity ◽

Rate Capability ◽

Cycling Performance ◽

Sodium Ion ◽

Sodium Ion Batteries ◽

Ion Diffusion ◽

X Ray Diffraction ◽

Phase Crystal

The effects of fluorine (F) doping on the phase, crystal structure, and electrochemical performance of Na2Ti3O7 are studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and electrochemical measurements. F-doping does not change the crystal structure of NTO, although it has an effect on the morphology of the resultant product. As an anode material for sodium-ion batteries, the specific capacity of Na2Ti3O7 exhibits a 30% increase with F-doping owing to the improved sodium ion diffusion coefficient. F-doped Na2Ti3O7 also displays an enhanced rate capability and favourable cycling performance for more than 800 cycles.

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