Facilely fabricating FeSe nanoparticles embedded in N-doped carbon towards promoting sodium storage behaviors

Li, Jingfa; Zhao, Jian; Tang, Rong; Chen, Qiang; Niu, Zhihao; Guo, Cong; Su, Jing; Zhang, Lei

doi:10.1016/j.jpowsour.2019.227517

Cited by 41 publications

(16 citation statements)

References 31 publications

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“…19 Only one oxidation peak at about 1.6 V and the corresponding reduction peak at about 1.0 V in the second cycle onward can be attributed to the reversible Na + intercalation/deintercalation of FePSe 3 in state II. Here, we set the cutoff voltage to be 0.8 V in the study to avoid damage to the structure of Na x FePSe 3 because the formation voltages of Na 2 Se are reported at around 0.6 V. 35,36 As a result, the setting of the cutoff voltage as 0.8 V is crucial to achieve and maintain good cycling stability (Figures 5c and S7), while it is observed that the capacity declined drastically from 440 to 100 mA h g −1 during 50 cycles at 50 mA g −1 within a voltage window of 0.01−3 V (Figure S8). The decline in capacity is typically resulted from an overdischarge, which damaged the structure of Na x FePSe 3 by the conversion type reaction.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of van der Waals Heterostructured FePSe₃/Carbon Hybrid Nanosheets for Sodium Storage with High Performance

Xing

Yang

Wang

et al. 2020

ACS Appl. Mater. Interfaces

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Iron phosphorus triselenide (FePSe 3 ) is attractive for energy applications owing to its interesting layered geometry, electronic structure, and physiochemical property, while it is limited in actual application because of a very long fabrication time of over 7 days. Herein, we report a new synthetic route to a highquality sheetlike hybrid of iron phosphorus triselenide nanocrystals coated with graphitic carbon (FePSe 3 /C) as an alternative kind of van der Waals heterostructures for the first time via a pyrolytic process at 600 °C from the precursors of ferrocene, red phosphorus, and selenium in a quartz tube with a significantly shortened reaction time of 24 h and even down to 30 min. Investigations demonstrated that the component phase of FePSe 3 in the layered FePSe 3 /C hybrid nanosheets is the rhombohedral phase, and the hybrid nanosheets other than bulk crystals are about 15 nm in thickness. Acting as a cathode in fabricating half-cell sodium-ion batteries, the layered FePSe 3 /C hybrid nanosheets exhibited remarkable performance. Typically, when current density was set as 50 mA g −1 , the hybrid nanosheet-assembled battery exhibited a capacity of 182.7 mA h g −1 after performing over 50 cycles, and the nanosheet battery exhibited a capacity of 142 mA h g −1 after performing for 200 cycling trials at 1 A g −1 in the 0.8−2.2 V voltage window. Meanwhile, the layered FePSe 3 /C hybrid nanosheets also exhibited very high rate capabilities at a relatively large current density in the present study, that is, 172 and 95 mA h g −1 under typical performing conditions at 0.5 and 5 A g −1 , respectively.

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Section: Resultsmentioning

confidence: 99%

Fabrication of van der Waals Heterostructured FePSe₃/Carbon Hybrid Nanosheets for Sodium Storage with High Performance

Xing

Yang

Wang

et al. 2020

ACS Appl. Mater. Interfaces

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“…As shown in Figure 3d, an obvious peak located at 284.8 eV is associated with C−C, the other peak centered at 285.8 eV belonging to CC. 40,41 As shown in the Se 3d spectrum (Figure 3e), two fitted peaks at 55.58 and 56.50 eV are assigned to Se 3d 5/2 and Se 3d 3/2 , respectively. 42,43 In the spectrum of Figure 3f, there are two peaks at 724.6 and 711.0 eV corresponding to Fe 2p 1/2 and Fe 2p 3/2 , 43,39 which is consistent with Fe 2+ in FeSe.…”

Section: ■ Results and Discussionmentioning

confidence: 88%

Regular Mesoporous Structural FeSe@C Composite with Enhanced Reversibility for Fast and Stable Potassium Storage

Liu

Meng

et al. 2021

J. Phys. Chem. C

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Due to the superior theoretical capacity, impressive operating potential, and environmental benignity, metal selenides as the promising candidates have attracted extensive interest in potassium-ion batteries (KIBs). However, structure collapse of the electrode and sluggish reaction kinetics restrict their application in KIBs owing to the volume expansion of metal selenides and the large radius of K+. Herein, we rationally select metal–organic framework (MOF) iron 1,3,5-benzenetricarboxylate (MIL-100(Fe)) as the precursor on account of its microporous opening windows and mesoporous cages, which well-confined selenium (Se) and fabricated mesoporous structural FeSe@C (NFC) successfully. The mesoporous structural NFC electrode achieved 310 mA h g–1 at 500 mA g–1 over 1000 cycles with 98% coulombic efficiency and delivered excellent rate capacity (276 mA h g–1 at 1000 mA g–1 and 254 mA h g–1 at 2000 mA g–1), which could be attributed to the large surface area and mesoporous structural composite along with carbon framework coating. It can also be concluded that the pseudocapacitive contribution accelerates K+ transport and enable faster kinetics. Significantly, in situ X-ray diffraction (XRD) analysis revealed that the conversion reaction mechanism of FeSe (FeSe + 2K+ ↔ Fe + K2Se) occurs on reduction and oxidation reversibly. The superior electrochemical performance exhibits the great potential of the FeSe@C composite as a promising anode material for KIBs.

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“…For example, FeSe nanoparticles were prepared via a direct thermal annealing method, in which N-doped carbon layers were simultaneously introduced. 46 A schematic illustration of the fabrication route for enhancing the Na + storage ability is displayed in Fig. 2a.…”

Section: D Metal Selenidesmentioning

confidence: 99%

Advances and challenges in metal selenides enabled by nanostructures for electrochemical energy storage applications

Mao

Meng

et al. 2022

Nanoscale

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Facilely fabricating FeSe nanoparticles embedded in N-doped carbon towards promoting sodium storage behaviors

Cited by 41 publications

References 31 publications

Fabrication of van der Waals Heterostructured FePSe₃/Carbon Hybrid Nanosheets for Sodium Storage with High Performance

Fabrication of van der Waals Heterostructured FePSe₃/Carbon Hybrid Nanosheets for Sodium Storage with High Performance

Regular Mesoporous Structural FeSe@C Composite with Enhanced Reversibility for Fast and Stable Potassium Storage

Advances and challenges in metal selenides enabled by nanostructures for electrochemical energy storage applications

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Facilely fabricating FeSe nanoparticles embedded in N-doped carbon towards promoting sodium storage behaviors

Cited by 41 publications

References 31 publications

Fabrication of van der Waals Heterostructured FePSe3/Carbon Hybrid Nanosheets for Sodium Storage with High Performance

Fabrication of van der Waals Heterostructured FePSe3/Carbon Hybrid Nanosheets for Sodium Storage with High Performance

Regular Mesoporous Structural FeSe@C Composite with Enhanced Reversibility for Fast and Stable Potassium Storage

Advances and challenges in metal selenides enabled by nanostructures for electrochemical energy storage applications

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Fabrication of van der Waals Heterostructured FePSe₃/Carbon Hybrid Nanosheets for Sodium Storage with High Performance

Fabrication of van der Waals Heterostructured FePSe₃/Carbon Hybrid Nanosheets for Sodium Storage with High Performance