Crystallographic-plane tuned Prussian-blue wrapped with RGO: a high-capacity, long-life cathode for sodium-ion batteries

Wang, Hui; Wang, Li; Chen, Shuangming; Li, Guopeng; Quan, Junjie; Xu, Enze; Li, Song; Jiang, Yang

doi:10.1039/c6ta10592k

Cited by 81 publications

(60 citation statements)

References 49 publications

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“…To probe the evolution of the valence of vanadium and the existence of potassium during the cycle, XPS analysis was performed. In Figure a, the presence of potassium is evidenced in the XPS spectrum for the discharged electrode, while they are absent for the pristine and recharged samples, also confirming the reversibility. In Figure b, V 2p spin‐orbit spectra are exhibited, with binding energies of V 4+ 2p 3/2 , V 5+ 2p 3/2 , V 4+ 2p 1/2 , and V 5+ 2p 1/2 , at 516.3, 517.5, 523.4, and 524.6 eV, respectively .…”

Section: Resultsmentioning

confidence: 53%

High Potassium Storage Capability of H₂V₃O₈ in a Non‐Aqueous Electrolyte

2019

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Potassium‐ion batteries (KIBs) are one of the potential candidates for large‐scale energy storage devices with low cost due to the abundance of potassium resources. However, the development of cathode materials with high capacity and structural stability has been a challenge due to the difficulties of intercalation of the large size of K‐ions into host materials. In this work, H2V3O8 (or V3O7⋅H2O) is reported as a new cathode material for KIBs. It shows reversible potassium‐intercalation behavior with the first discharge capacity of 168 mAh g−1 at 5 mA g−1 and an average discharge voltage of ∼2.5 V (vs. K/K+) in 0.5 M KPF6 in EC/DEC (1:1 v/v). The specific capacity increases up to 181 mAh g−1 for the third cycle and gradually decreases with 75% of the capacity retention after 100 cycles. The chemical formula of the potassiated phase is K1.77H2V3O8. However, scan‐rate dependent cyclic voltammetry and elemental analyses suggest that ∼28% of the capacity comes from the surface K ions on the H2V3O8 particles; thus, the bulk‐intercalated phase can be formulated as K1.27H2V3O8. The crystal structure is stable during the electrochemical cycling, keeping the structural water, confirming that H2V3O8 can be considered as one of the high‐capacity cathode materials for KIBs.

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Section: Resultsmentioning

confidence: 53%

High Potassium Storage Capability of H₂V₃O₈ in a Non‐Aqueous Electrolyte

2019

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“…The calculated values for multipoint Brunauer–Emmett–Teller (BET), 354 m 2 g −1 and the total pore volume, 0.26 cm 3 g −1 are remarkable. If compared to the use of other 2D templates like reduced graphene oxide, nucleation onto MoS 2 yields PB particles with close to three times higher specific surface areas that might translate in superior electrochemical performance due to more favorable ion diffusion. Analysis of the pore size distribution (PSD) by using nonlinear solid density functional theory (NLDFT) indicates that porosity is dominated by micropores in accordance with the expected PB mean pore diameter of 5.7 Å at P / P 0 = 0.0–0.3 and intergrain mesoporosity between 0.3 and 0.9 (Figure f).…”

Section: Resultsmentioning

confidence: 99%

“…In the same direction, materials with high surface‐to‐mass ratio like graphene and graphene oxide have been used in the design of 2D composites where the 2D material is decorated with PB nanoparticles by reaction with iron precursors in solution, most often assisted by means of the action of a reducing agent . In this way, composite sodium‐ion batteries (SIBs) electrodes, with higher reversible capacities and better cyclability compared to the analogous bare PBs, have been prepared with charge/discharge capacity values reaching 160 mA h g −1 and with a capacity retention at 0.5 C up to 92.2% . However, the use of PB and PBAs composites based on 2D materials different from graphene or its oxide has remained almost unexplored.…”

Section: Introductionmentioning

confidence: 99%

Prussian Blue@MoS₂ Layer Composites as Highly Efficient Cathodes for Sodium‐ and Potassium‐Ion Batteries

Morant‐Giner

Sanchis‐Gual

Romero

et al. 2017

Adv Funct Materials

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Prussian blue (PB) represents a simple, economical, and eco-friendly system as cathode material for sodium-ion batteries (SIBs). However, structural problems usually worsen its experimental performance thus motivating the search for alternative synthetic strategies and the formation of composites that compensate these deficiencies. Herein, a straightforward approach for the preparation of PB/MoS 2 -based nanocomposites is presented. MoS 2 provides a 2D active support for the homogeneous nucleation of porous PB nanocrystals, which feature superior surface areas than those obtained by other methodologies, giving rise to a compact PB shell covering the full flake. The nanocomposite exhibits an excellent performance as cathode for SIBs with discharge capacity values up to 177 mA h g −1 and a specific capacitance of 354 F g −1 . These values are even larger for the intercalation of K + ions (up to 215 mA h g −1 , reaching a specific capacitance of 489 F g −1 ). Compared to similar composites, superior performance can be ascribed to a synergistic effect of the coordination compound with the 2D material.

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“…Wang et. al . reported that PBA/graphene composite showed excellent electrochemical performance in batteries, which was attributed to the highly robust framework of carbon support and the larger specific surface area with all (100) planes exposed.…”

Section: Introductionmentioning

confidence: 99%

Ni Prussian Blue Analogue/Mesoporous Carbon Composite as Electrode Material for Aqueous K‐Ion Energy Storage: Effect of Carbon‐Framework Interaction on Its Electrochemical Behavior

et al. 2018

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This study evaluates the interaction of mesoporous carbon (MC) and nitrogen doped mesoporous carbon (NMC) with Nickel prussian blue analogues (Ni‐PBA) and its effect on electrochemical properties and energy storage. The Raman, IR, Mossbauer and XPS results reveal that MC‐NiPBA composite exhibited a large modification to covalent character of carbon and an increase in defects of carbonaceous material. This latter is associated with the oxidation of carbon sites and reduction of iron in hexacyanoferrate during composite synthesis, which increase the charge subtraction in Fe (Low Spin) through CN ligand, due to sp‐d hybridization between nickel and carbon structure. Electrochemical impedance spectroscopy characterization showed that the interaction between MC and NiPBA decreases the paste resistance and improves the chemical capacitance of the material, whereas, the apparent diffusion coefficient for K‐ion in Ni‐PBA is not affected by the presence of mesoporous carbon. The cyclic voltammetry and galvanostatic characterization confirm the enhancement of MC‐NiPBA capacitance during charge/discharge process due to their synergetic interaction. However, the donor/acceptor characteristics of nitrogen modify the orbital hybridization in doped carbon, inhibiting the carbon‐framework interaction.

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Crystallographic-plane tuned Prussian-blue wrapped with RGO: a high-capacity, long-life cathode for sodium-ion batteries

Abstract: Using {100} plane-capped cubic K0.33FeFe(CN)6/RGO as the cathode, an initial discharge–charge capacity of 159–161 mA h g−1 at 0.5C, and a superior capacity retention of 90.1% at 10C after 500 cycles can be obtained.

Cited by 81 publications

References 49 publications

High Potassium Storage Capability of H₂V₃O₈ in a Non‐Aqueous Electrolyte

High Potassium Storage Capability of H₂V₃O₈ in a Non‐Aqueous Electrolyte

Prussian Blue@MoS₂ Layer Composites as Highly Efficient Cathodes for Sodium‐ and Potassium‐Ion Batteries

Ni Prussian Blue Analogue/Mesoporous Carbon Composite as Electrode Material for Aqueous K‐Ion Energy Storage: Effect of Carbon‐Framework Interaction on Its Electrochemical Behavior

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Crystallographic-plane tuned Prussian-blue wrapped with RGO: a high-capacity, long-life cathode for sodium-ion batteries

Abstract: Using {100} plane-capped cubic K0.33FeFe(CN)6/RGO as the cathode, an initial discharge–charge capacity of 159–161 mA h g−1 at 0.5C, and a superior capacity retention of 90.1% at 10C after 500 cycles can be obtained.

Cited by 81 publications

References 49 publications

High Potassium Storage Capability of H2V3O8 in a Non‐Aqueous Electrolyte

High Potassium Storage Capability of H2V3O8 in a Non‐Aqueous Electrolyte

Prussian Blue@MoS2 Layer Composites as Highly Efficient Cathodes for Sodium‐ and Potassium‐Ion Batteries

Ni Prussian Blue Analogue/Mesoporous Carbon Composite as Electrode Material for Aqueous K‐Ion Energy Storage: Effect of Carbon‐Framework Interaction on Its Electrochemical Behavior

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Product

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High Potassium Storage Capability of H₂V₃O₈ in a Non‐Aqueous Electrolyte

High Potassium Storage Capability of H₂V₃O₈ in a Non‐Aqueous Electrolyte

Prussian Blue@MoS₂ Layer Composites as Highly Efficient Cathodes for Sodium‐ and Potassium‐Ion Batteries