Improved electrochemical property of nanoparticle polyoxovanadate K7NiV13O38 as cathode material for lithium battery

Ni, Erfu; Uematsu, Shinya; Quan, Zhen; Sonoyama, Noriyuki

doi:10.1007/s11051-013-1732-0

Cited by 38 publications

(44 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The integration of semi‐metals, such as antimony, arsenic, germanium, or silicon, into polyoxovanadates (POVs) has attracted great interest because of the potential application of these materials in nanoscale magnetism (SMM=single molecular magnets), heterogeneous catalysis, or selective oxidation reactions . Antimonato polyoxovanadates (Sb‐POVs) belong to this class of compounds consisting of high‐nuclearity vanadate clusters, in which VO 5 square pyramids are partially substituted by Sb 2 O 5 handle‐like moieties.…”

Section: Figurementioning

confidence: 99%

High Nuclearity Antimonato‐Polyoxovanadate Cluster {V₁₅Sb₆O₄₂} as a Synthon for the Solvothermal in situ Generation of α‐ and β‐{V₁₄Sb₈O₄₂} Isomers

Wendt

Näther

Bensch

2016

Chemistry A European J

View full text Add to dashboard Cite

New heteroatom polyoxovanadates (POVs) were synthesized by applying a water-soluble high-nuclearity cluster as new synthon. The [V15 Sb6 O42 ](6-) cluster shell exhibiting D3 symmetry was in situ transformed into completely different cluster shells, namely, the α-[V14 Sb8 O42 ](4-) isomer with D2d and the β-[V14 Sb8 O42 ](4-) isomer with D2h symmetry. The solvothermal reaction of {Ni(en)3 }3 [V15 Sb6 O42 (H2 O)x ]⋅15 H2 O (x=0 or 1; en=ethylenediamine) in water led to the crystallization of [{Ni(en)2 }2 V14 Sb8 O42 ]⋅5.5 H2 O containing the β-isomer. The addition of [Ni(phen)3 ](ClO4 )2 ⋅0.5 H2 O (phen=1,10-phenanthroline) to the reaction slurry gave the new compound {Ni(phen)3 }2 [V14 Sb8 O42 ]⋅phen⋅12 H2 O with the α-isomer. Both transformation reactions are complex due the change of symmetry, the chemical composition, and rearrangement of the VO5 square pyramids and Sb2 O5 handle-like moieties.

show abstract

Section: Figurementioning

confidence: 99%

High Nuclearity Antimonato‐Polyoxovanadate Cluster {V₁₅Sb₆O₄₂} as a Synthon for the Solvothermal in situ Generation of α‐ and β‐{V₁₄Sb₈O₄₂} Isomers

Wendt

Näther

Bensch

2016

Chemistry A European J

View full text Add to dashboard Cite

show abstract

“…After the Li + insertion process, the K + could be substituted by Li + , and then the reaction undergoes a reversible process during delithiation process. Although POM state becomes amorphous during the Li + insertion/extraction, the POM structures do not change. In comparison, there are 20 {Mo 9 O 9 }‐type pores in Mo 132 , but the pores are open and big enough for Li + , which might be more conducive to Li + overflow and not facilitated for Li + storage.…”

Section: Discussionmentioning

confidence: 99%

Investigation of the Enhanced Lithium Battery Storage in a Polyoxometalate Model: From Solid Spheres to Hollow Balls

Liu

Zhang

et al. 2018

Small Methods

View full text Add to dashboard Cite

Materials with hollow structures are generally considered more conducive to lithium‐ion storage than solid materials, but there is no suitable crystal model system to illustrate it. Herein, it is successfully simulated by utilizing polyoxometalate models to compare the lithium‐ion battery performances. New crystals, EMI‐PMo12 (EMI: 1‐ethyl‐3‐methylimidazolium) with solid sphere and EMI‐Mo72V30 and EMI‐Mo132 with hollow structures, are synthesized. In order to increase their electronic conductivity, the composites EMI‐PMo12@rGO, EMI‐Mo72V30@rGO, and EMI‐Mo132@rGO (rGO: reduced graphene oxide) can be prepared by introducing rGO. The composite EMI‐Mo72V30@rGO delivers a reversible capacity of 1145 mAh g−1 at 100 mA g−1, and the capacity retentions are nearly 100% at 2000 mA g−1 for over 500 cycles. This study not only provides a promising avenue toward manufacturing and developing new‐generation electrode materials in lithium‐ion storage but also proposes a mechanism toward comparing their performances at the molecular level.

show abstract

“…Thus, POMs have been employed as cathode and anode materials for LIBs and most of them exhibited high capacity . Besides, POMs undergo redox reactions as a molecular cluster not as a continuum, so the stability of their crystal structure is less important as compared to other oxide materials . Therefore, POMs can deliver long cycle life than other conversion‐type oxides.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, different molecular structures might influence the ability of redox reactions as well as cycling stability. For example, Li 6 [V 10 O 28 ], (KH) 9 [PV 14 O 42 ], K 7 [NiV 13 O 38 ], and K 7 [MnV 13 O 38 ] have been used as cathodes for LIBs, but their capacities and cycling stabilities are totally different. We synthesized Na 7 [H 2 PV 14 O 42 ]·nH 2 O through a facile solution process under low temperature (≤ 50 °C).…”

Section: Introductionmentioning

confidence: 99%

Mechanism of Sodium Ion Storage in Na₇[H₂PV₁₄O₄₂] Anode for Sodium‐Ion Batteries

Lin

Huang

et al. 2018

Adv Materials Inter

View full text Add to dashboard Cite

In this work, the authors explore the sodium salt of the 14‐vanado(V)phosphate, Na7[H2PV14O42], as a potential anode material for sodium‐ion batteries (NIBs). The multi‐electron redox activity of the polyoxovanadate [H2PV14O42]7‐leads to high capacity. This polyanion is synthesized by a simple aqueous solution procedure and isolate as a sodium salt with different numbers of crystal waters, Na7[H2PV14O42]·nH2O (n = 15–24). Na7[H2PV14O42] as anode in NIBs exhibits a high and reversible capacity of 322 mA h g−1 at 25 mA g−1 with a high cycling stability (with capacity retention of 87% after 120 cycles). Some of the V5+ ions in [H2PV14O42]7‐ can be reduced to V3+ after being discharged to 0.01 V versus Na/Na+, resulting in an average oxidation state of V3.7+, as based on ex situ X‐ray photoelectron spectroscopy and in situ synchrotron X‐ray absorption near edge structure studies. The crystalline material becomes amorphous during the charge/discharge processes, which can be observed by in situ synchrotron X‐ray diffraction, indicating that functionality does not require crystallinity. The authors propose that the charge storage mechanism of Na7[H2PV14O42] anodes mainly involves redox reactions of V accompanied by insertion/extraction of Na ions in‐between polyoxo‐14‐vanadate ions and adsorption/desorption of Na ions on the surface of the vanadate material.

show abstract

Improved electrochemical property of nanoparticle polyoxovanadate K7NiV13O38 as cathode material for lithium battery

Cited by 38 publications

References 32 publications

High Nuclearity Antimonato‐Polyoxovanadate Cluster {V₁₅Sb₆O₄₂} as a Synthon for the Solvothermal in situ Generation of α‐ and β‐{V₁₄Sb₈O₄₂} Isomers

High Nuclearity Antimonato‐Polyoxovanadate Cluster {V₁₅Sb₆O₄₂} as a Synthon for the Solvothermal in situ Generation of α‐ and β‐{V₁₄Sb₈O₄₂} Isomers

Investigation of the Enhanced Lithium Battery Storage in a Polyoxometalate Model: From Solid Spheres to Hollow Balls

Mechanism of Sodium Ion Storage in Na₇[H₂PV₁₄O₄₂] Anode for Sodium‐Ion Batteries

Contact Info

Product

Resources

About

Improved electrochemical property of nanoparticle polyoxovanadate K7NiV13O38 as cathode material for lithium battery

Cited by 38 publications

References 32 publications

High Nuclearity Antimonato‐Polyoxovanadate Cluster {V15Sb6O42} as a Synthon for the Solvothermal in situ Generation of α‐ and β‐{V14Sb8O42} Isomers

High Nuclearity Antimonato‐Polyoxovanadate Cluster {V15Sb6O42} as a Synthon for the Solvothermal in situ Generation of α‐ and β‐{V14Sb8O42} Isomers

Investigation of the Enhanced Lithium Battery Storage in a Polyoxometalate Model: From Solid Spheres to Hollow Balls

Mechanism of Sodium Ion Storage in Na7[H2PV14O42] Anode for Sodium‐Ion Batteries

Contact Info

Product

Resources

About

High Nuclearity Antimonato‐Polyoxovanadate Cluster {V₁₅Sb₆O₄₂} as a Synthon for the Solvothermal in situ Generation of α‐ and β‐{V₁₄Sb₈O₄₂} Isomers

High Nuclearity Antimonato‐Polyoxovanadate Cluster {V₁₅Sb₆O₄₂} as a Synthon for the Solvothermal in situ Generation of α‐ and β‐{V₁₄Sb₈O₄₂} Isomers

Mechanism of Sodium Ion Storage in Na₇[H₂PV₁₄O₄₂] Anode for Sodium‐Ion Batteries