Porous N-doped carbon nanofibers assembled with nickel ferrite nanoparticles as efficient chemical anchors and polysulfide conversion catalyst for lithium-sulfur batteries

Yao, Shanshan; He, Yanping; Wang, Youqiang; Bi, Mingzhu; Liang, Yazhou; Majeed, Arslan; Yang, Zuolei; Shen, Xiangqian

doi:10.1016/j.jcis.2021.05.125

Cited by 131 publications

(22 citation statements)

References 55 publications

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“…The addition of Gd 2 O 3 nanorods have low polarization (ΔV = 0.44 V → 0.39 V). It proves that the addition of Gd 2 O 3 is beneficial to improve the electrochemical stability and reaction kinetics of the electrode 46 . Meanwhile, the effect of Gd 2 O 3 addition on the charge transfer kinetics during the electrochemical reaction process of the electrode was investigated by Tafel curve and Tafel equation ( η = b log i + a ) 47,48 .…”

Section: Resultsmentioning

confidence: 96%

Gadolinium oxide nanorods decorated Ketjen black@sulfur composites as functional catalyzing polysulfides conversion in lithium/sulfur batteries

Wang

et al. 2022

Intl J of Energy Research

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Summary The development of lithium/sulfur batteries (LSBs) was hindered due to the shuttling of lithium polysulfides in electrolytes and sluggish electrochemical kinetics of polysulfides. To address these stumbling blocks, we designed gadolinium oxide (Gd2O3) nanorods decoration of ketjen black@sulfur (Gd2O3/KB@S) composite that adsorbs and provides sufficient sites with lithium polysulfides interaction. The Gd2O3 nanorods play a key role in the adsorption and catalysis performance of polysulfides, which further accelerate the redox kinetics. Consequently, the Gd2O3/LB@S cathode with sulfur loading of 3.1 mg cm−2 attained a high initial discharge capacity of 817.2 mAh g−1 at 0.5 C with a decaying rate of 0.097% per cycle over 500 cycles. Even with high sulfur loading of 5 mg cm−2, the Gd2O3/KB@S cathode also presents a capacity of 5.1 mAh at 0.2 C with retention of 73% over 160 cycles. The strategy proposed here would advance the development of continuous rare earth oxides in the field of rechargeable batteries.

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Section: Resultsmentioning

confidence: 96%

Gadolinium oxide nanorods decorated Ketjen black@sulfur composites as functional catalyzing polysulfides conversion in lithium/sulfur batteries

Wang

et al. 2022

Intl J of Energy Research

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“…After N-doping, the SEM image was screened and described in Figure 2 B, which shows the same morphological characteristics. According to previous studies, N-doping could affect the chemistry of the produced fibers to have N without any distortion in the expected morphology [ 17 , 40 ]. The TEM surface morphology of TiO 2 NFs after calcination was found as nanoparticles connected to form a fibrous morphology, as shown in Figure 2 C. After N-doping, the fiber was found to be smoother with no secondary particles, as seen in the TEM image of N-TiO 2 NFs.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Impedance Investigation of Dye-Sensitized Solar Cells Based on Electrospun TiO2 Nanofibers Photoanodes

et al. 2022

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This work investigates an electrochemical impedance analysis based on synthesized TiO2 nanofibers (NFs) photoanodes, which were fabricated via electrospinning and calcination. The investigated photoanode substrate NFs were studied in terms of physicochemical tools to investigate their morphological character, crystallinity, and chemical contents via scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD) analyses. As a result, the studied photoanode substrate NFs were applied to fabricate dye-sensitized solar cells (DSCs), and the electrochemical impedance analysis (EIS) was studied in terms of equivalent circuit fitting and impacts of N-doping, the latter of which was approved via XPS analysis. N-doping has a considerable role in the enhancement of charge transfers, which could be due to the strong interactions between active-site N atoms and the used photosensitizer.

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“…8b. 26,32,[35][36][37][38][39][40] The CV curves of sulfur, NPCNF/S-A, and NPCNF/S-B electrodes at a scanning rate of 0.2 mV s À1 are shown in Fig. 8c.…”

Section: Electrochemical Performancementioning

confidence: 99%

Enhanced stability of nitrogen doped porous carbon fiber on cathode materials for high performance lithium–sulfur batteries

Jie

Liang

et al. 2022

RSC Adv.

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Porous N-doped carbon nanofibers assembled with nickel ferrite nanoparticles as efficient chemical anchors and polysulfide conversion catalyst for lithium-sulfur batteries

Cited by 131 publications

References 55 publications

Gadolinium oxide nanorods decorated Ketjen black@sulfur composites as functional catalyzing polysulfides conversion in lithium/sulfur batteries

Gadolinium oxide nanorods decorated Ketjen black@sulfur composites as functional catalyzing polysulfides conversion in lithium/sulfur batteries

Electrochemical Impedance Investigation of Dye-Sensitized Solar Cells Based on Electrospun TiO2 Nanofibers Photoanodes

Enhanced stability of nitrogen doped porous carbon fiber on cathode materials for high performance lithium–sulfur batteries

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