Structural engineering of tin sulfides anchored on nitrogen/phosphorus dual-doped carbon nanofibres in sodium/potassium-ion batteries

Wang, Yiyi; Liu, Junbin; Chen, Xiaochuan; Kang, Bor‐Hwang; Wang, Hong‐En; Xiong, Peixun; Chen, Qinghua; Wei, Mingdeng; Li, Neng; Qian, Qingrong; Ling, Zeng

doi:10.1016/j.carbon.2021.12.051

Cited by 102 publications

(56 citation statements)

References 78 publications

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“…In addition, two bands ascribed to the presence of carbon species were identified. The band at around 1360 cm −1 could be attributed to the D band from defects and disorders in the amorphous carbon layers, while the other band at around 1590 cm −1 was related to the G band related to the vibration of sp 2 -bonded carbon atoms [ 54 ]. This result implied the successful deposition of amorphous carbon layer on the surface of the NiMoO 4 NWAs.…”

Section: Resultsmentioning

confidence: 99%

Synchronous Defect and Interface Engineering of NiMoO4 Nanowire Arrays for High-Performance Supercapacitors

et al. 2022

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Developing high-performance electrode materials is in high demand for the development of supercapacitors. Herein, defect and interface engineering has been simultaneously realized in NiMoO4 nanowire arrays (NWAs) using a simple sucrose coating followed by an annealing process. The resultant hierarchical oxygen-deficient NiMoO4@C NWAs (denoted as “NiMoO4−x@C”) are grown directly on conductive ferronickel foam substrates. This composite affords direct electrical contact with the substrates and directional electron transport, as well as short ionic diffusion pathways. Furthermore, the coating of the amorphous carbon shell and the introduction of oxygen vacancies effectively enhance the electrical conductivity of NiMoO4. In addition, the coated carbon layer improves the structural stability of the NiMoO4 in the whole charging and discharging process, significantly enhancing the cycling stability of the electrode. Consequently, the NiMoO4−x@C electrode delivers a high areal capacitance of 2.24 F cm−2 (1720 F g−1) at a current density of 1 mA cm−2 and superior cycling stability of 84.5% retention after 6000 cycles at 20 mA cm−2. Furthermore, an asymmetric super-capacitor device (ASC) has been constructed with NiMoO4−x@C as the positive electrode and activated carbon (AC) as the negative electrode. The as-assembled ASC device shows excellent electrochemical performance with a high energy density of 51.6 W h kg−1 at a power density of 203.95 W kg−1. Moreover, the NiMoO4//AC ASC device manifests remarkable cyclability with 84.5% of capacitance retention over 6000 cycles. The results demonstrate that the NiMoO4−x@C composite is a promising material for electrochemical energy storage. This work can give new insights on the design and development of novel functional electrode materials via defect and interface engineering through simple yet effective chemical routes.

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Section: Resultsmentioning

confidence: 99%

Synchronous Defect and Interface Engineering of NiMoO4 Nanowire Arrays for High-Performance Supercapacitors

et al. 2022

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“…4b, a pair of notable peaks (around 486.4 and 494.8 eV) are associated with the Sn 3d 5/2 and Sn 3d 3/2 of Sn 4+ , respectively, testifying that the SnS 2 was successfully synthesized. 26,54 Another pair of relatively minor peaks (near 485.5 and 494.1 eV) can be attributed to the occurrence of C-Sn bonds, 55,56 attesting that intense electronic coupling exists in SnS 2 and SPAN bres, which not only facilitates fast charge transfer but also enhances the structural stability of the composite. The four remarkable peaks can be This journal is © The Royal Society of Chemistry 2022 discerned in the S 2p spectrum of Fig.…”

Section: Structure Analysismentioning

confidence: 99%

Stabilizing intermediate phases via the efficient confinement effects of the SnS₂-SPAN fibre composite for ultra-stable half/full sodium/potassium-ion batteries

Wang

Chen

et al. 2022

J. Mater. Chem. A

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“…The BiSbS x @SPAN‐450 electrode maintains decent reversible capacities of 601, 489 and 393 mAh g −1 at 0.2, 1 and 2 A g −1 , respectively. Surprisingly, a high capacity of 616 mAh g −1 is still retained, as the current density back to 0.2 A g −1 , indicating the exceptional rate capability of the BiSbS x @SPAN‐450 electrode [59,60] . Therefore, the capacity of BiSbS x @SPAN‐450 is 17 % higher than that of BiSbS x @SPAN‐550 and 34 % higher than that of bulk BiSbS x .…”

Section: Resultsmentioning

confidence: 97%

“…Surprisingly, a high capacity of 616 mAh g À 1 is still retained, as the current density back to 0.2 A g À 1 , indicating the exceptional rate capability of the BiSbS x @SPAN-450 electrode. [59,60] Therefore, the capacity of BiSbS x @SPAN-450 is 17 % higher than that of BiSbS x @SPAN-550 and 34 % higher than that of bulk BiSbS x . Furthermore, long-term cycling stability was performed at a large K + store rate of 1 A g À 1 (Figure 4c), with the bulk BiSbS x electrode showing a rapid decay to 19 mAh g À 1 within 100 cycles, which is probably triggered by large volume variation stemming from structural collapse of bulk BiSbS x during the the K-ion interaction/ extraction process.…”

Section: Chemistry-a European Journalmentioning

confidence: 95%

Structure Engineering of BiSbS_x Nanocrystals Embedded within Sulfurized Polyacrylonitrile Fibers for High Performance of Potassium‐Ion Batteries

Liu

Lin

et al. 2022

Chemistry A European J

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Potassium-ion batteries (PIBs) are regarded as promising candidates in next-generation energy storage technology; however, the electrode materials in PIBs are usually restricted by the shortcomings of large volume expansion and poor cycling stability stemming from a high resistance towards diffusion and insertion of large-sized K ions. In this study, BiSbS x nanocrystals are rationally integrated with sulfurized polyacrylonitrile (SPAN) fibres through electrospinning technology with an annealing process. Such a unique structure, in which BiSbS x nanocrystals are embedded inside the SPAN fibre, affords multiple binding sites and a short diffusion length for K + to realize fast kinetics. In addition, the molecular structure of SPAN features robust chemical interactions for stationary diffluent discharge products. Thus, the electrode demonstrates a superior potassium storage performance with an excellent reversible capacity of 790 mAh g À 1 (at 0.1 A g À 1 after 50 cycles) and 472 mAh g À 1 (at 1 A g À 1 after 2000 cycles). It's one of the best performances for metal dichalcogenides anodes for PIBs to date. The unusual performance of the BiSbS x @SPAN composite is attributed to the synergistic effects of the judicious nanostructure engineering of BiSbS x nanocrystals as well as the chemical interaction and confinement of SPAN fibers.

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Structural engineering of tin sulfides anchored on nitrogen/phosphorus dual-doped carbon nanofibres in sodium/potassium-ion batteries

Cited by 102 publications

References 78 publications

Synchronous Defect and Interface Engineering of NiMoO4 Nanowire Arrays for High-Performance Supercapacitors

Synchronous Defect and Interface Engineering of NiMoO4 Nanowire Arrays for High-Performance Supercapacitors

Stabilizing intermediate phases via the efficient confinement effects of the SnS₂-SPAN fibre composite for ultra-stable half/full sodium/potassium-ion batteries

Structure Engineering of BiSbS_x Nanocrystals Embedded within Sulfurized Polyacrylonitrile Fibers for High Performance of Potassium‐Ion Batteries

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Structural engineering of tin sulfides anchored on nitrogen/phosphorus dual-doped carbon nanofibres in sodium/potassium-ion batteries

Cited by 102 publications

References 78 publications

Synchronous Defect and Interface Engineering of NiMoO4 Nanowire Arrays for High-Performance Supercapacitors

Synchronous Defect and Interface Engineering of NiMoO4 Nanowire Arrays for High-Performance Supercapacitors

Stabilizing intermediate phases via the efficient confinement effects of the SnS2-SPAN fibre composite for ultra-stable half/full sodium/potassium-ion batteries

Structure Engineering of BiSbSx Nanocrystals Embedded within Sulfurized Polyacrylonitrile Fibers for High Performance of Potassium‐Ion Batteries

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Product

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Stabilizing intermediate phases via the efficient confinement effects of the SnS₂-SPAN fibre composite for ultra-stable half/full sodium/potassium-ion batteries

Structure Engineering of BiSbS_x Nanocrystals Embedded within Sulfurized Polyacrylonitrile Fibers for High Performance of Potassium‐Ion Batteries