Electronic interconnected CoV2O6 to induce boosted reaction kinetics for highly stable sodium-ion half/full batteries

Yang, Jun; Ye, Lingqian; Sun, Jiaxun; Li, Changcong; Zhao, Xinran; Liu, Junhao; Sun, Chencheng

doi:10.1016/j.jallcom.2023.169694

Cited by 17 publications

(5 citation statements)

References 52 publications

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“…[19] The XPS of C 1s and N 1s showed a wide bulge, which could be fitted into two peaks, corresponding to CÀ C, CÀ N and pyrrolic N, pyridinic N, respectively (Figure 1e and f). [20] This reveals the high doping of C/N element in Cu-CoSe 2 @NC through melamine assisted pyrolysis method. The XPS of Cu 2p of Cu-CoSe 2 @NC is shown in Figure 1g.…”

Section: Resultsmentioning

confidence: 73%

Copper Doping of CoSe₂ Nanoparticles Encapsulated into Carbon Nanotubes with Enhanced Electron Conductance as Cathode for Rechargeable Magnesium Batteries

Liu

Dong

et al. 2023

ChemNanoMat

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Rechargeable magnesium batteries (RMBs) have been considered a promising alternative to lithium‐ion batteries (LIBs) due to the high energy density and abundance of magnesium resources. However, the development of high‐performance cathode materials for magnesium batteries has been a significant challenge. Herein, through comprehensive and simple hydrothermal, selenization and impregnation methods, Cu‐doped CoSe2 nanoparticles encapsulated into carbon nanotubes (Cu‐CoSe2@NC) was fabricated. CoSe2 nanoparticles confined in carbon nanotubes (CNTs) growing in three dimensions on the surface of nanofibers have abundant active sites and high doping degree. Cu doping further improves the electron conductance of the Cu‐CoSe2@NC for RMBs. As cathode, Cu‐CoSe2@NC delivers a reversible capacity of 294 mAh g−1 at 20 mA g−1 and 104 mAg g−1 at 500 mA g−1, which exhibits a reasonable specific capacity and rate capability. The characterization of the Cu‐CoSe2@NC by ex‐situ transmission electron microscopy (TEM) after cycles shows that it can be well adapted to the (de)intercalation of magnesium ions. Density Functional Theory (DFT) calculation shows that CoSe2 band gap decreases obviously after Cu doping, favoring the electron and ion transport. This work provides a reference for the design of cathode materials based on transition metal selenide for RMBs.

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Section: Resultsmentioning

confidence: 73%

Copper Doping of CoSe₂ Nanoparticles Encapsulated into Carbon Nanotubes with Enhanced Electron Conductance as Cathode for Rechargeable Magnesium Batteries

Liu

Dong

et al. 2023

ChemNanoMat

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“…The other two peaks at 784.78 eV and 802.78 eV correspond to the satellite peaks of Co 2p. 34 The XPS map of Se 3d can be segregated into three distinct peaks, as depicted in Fig. 1e.…”

Section: Resultsmentioning

confidence: 99%

In situ Cu doping of ultralarge CoSe nanosheets with accelerated electronic migration for superior sodium-ion storage

Geng¹,

Dong²,

Liu³

et al. 2023

Nanoscale

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“…The V 2p spectrum verifies the presence of both V 4+ (535.5 and 516.1 eV) and V 5+ (524.8 and 517.5 eV) (Figure 1f). [31] The N 1s spectrum reveals the presence of peaks at 397.8 and 399.8 eV, which can be attributed to C─N and C≡N in [Fe(CN) 6 ] 4− , respectively (Figure S6, Supporting Information). The other peak at around 398.0 eV of N 1s confirms the presence of V─N, thus providing evidence of the combination of VO 2+ .…”

Section: Resultsmentioning

confidence: 99%

Vanadium Hexacyanoferrate Prussian Blue Analogs for Aqueous Proton Storage: Excellent Electrochemical Properties and Mechanism Insights

Yang,

Hou,

et al. 2023

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The significant attraction toward aqueous proton batteries (APBs) is attributable to their expedited kinetics, elevated safety profile, and economical feasibility. Nevertheless, their practical implement is significantly blocked by the unsatisfactory energy density due to the limited cathode materials. Herein, vanadium hexacyanoferrate Prussian blue analog (VOHCF) is introduced as a potentially favorable cathode material for APBs. The findings demonstrate that this VOHCF electrode exhibits a notable reversible capacity of 102.7 mAh g−1 and exceptional cycling stability, with 95.4% capacity retention over 10 000 cycles at 10 A g−1. It is noteworthy that this is the detailed instance of VOHCF being proposed as a cathode for APBs. Combining the in situ characterization techniques and theoretical simulations, the origins of excellent proton storage performance are revealed as the multiple redox mechanisms with double active centers of ─C≡N group and V═O bond in VOHCF as well as the robust structure stability. A proton full cell with excellent performance is further achieved by coupling the VOHCF cathode and diquinoxalino[2,3‐a:2′,3′‐c] phenazine (HATN) anode, demonstrating the great potential of VOHCF in practical applications. This work could provide fundamental understanding to the development of feasible cathode materials for proton storage device.

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Electronic interconnected CoV2O6 to induce boosted reaction kinetics for highly stable sodium-ion half/full batteries

Cited by 17 publications

References 52 publications

Copper Doping of CoSe₂ Nanoparticles Encapsulated into Carbon Nanotubes with Enhanced Electron Conductance as Cathode for Rechargeable Magnesium Batteries

Copper Doping of CoSe₂ Nanoparticles Encapsulated into Carbon Nanotubes with Enhanced Electron Conductance as Cathode for Rechargeable Magnesium Batteries

In situ Cu doping of ultralarge CoSe nanosheets with accelerated electronic migration for superior sodium-ion storage

Vanadium Hexacyanoferrate Prussian Blue Analogs for Aqueous Proton Storage: Excellent Electrochemical Properties and Mechanism Insights

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Electronic interconnected CoV2O6 to induce boosted reaction kinetics for highly stable sodium-ion half/full batteries

Cited by 17 publications

References 52 publications

Copper Doping of CoSe2 Nanoparticles Encapsulated into Carbon Nanotubes with Enhanced Electron Conductance as Cathode for Rechargeable Magnesium Batteries

Copper Doping of CoSe2 Nanoparticles Encapsulated into Carbon Nanotubes with Enhanced Electron Conductance as Cathode for Rechargeable Magnesium Batteries

In situ Cu doping of ultralarge CoSe nanosheets with accelerated electronic migration for superior sodium-ion storage

Vanadium Hexacyanoferrate Prussian Blue Analogs for Aqueous Proton Storage: Excellent Electrochemical Properties and Mechanism Insights

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Product

Resources

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Copper Doping of CoSe₂ Nanoparticles Encapsulated into Carbon Nanotubes with Enhanced Electron Conductance as Cathode for Rechargeable Magnesium Batteries

Copper Doping of CoSe₂ Nanoparticles Encapsulated into Carbon Nanotubes with Enhanced Electron Conductance as Cathode for Rechargeable Magnesium Batteries