Sandwich-like silicon/Ti3C2Tx MXene composite by electrostatic self-assembly for high performance lithium ion battery

Zhang, Fan; Jia, Zirui; Wang, Chao; Feng, Ailing; Wang, Kuikui; Hou, Tianqi; Li, Jiajia; Zhang, Yi; Wu, Guanglei

doi:10.1016/j.energy.2020.117047

Cited by 89 publications

(45 citation statements)

References 42 publications

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“…Therefore, efforts to explore ideal sulfur cathode hosts for suppressing the polysulfide shuttle effect are still requested. In recent years, a novel type of two-dimensional transition metal carbides or carbonitrides has emerged, which is known as Mxenes [13,14]. Because of high electrical conductivities and 2D structures, Mxenes have been widely exploited for electrochemical sensors [15], LIBs [16], and supercapacitors [17].…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of sulfur@titanium carbide Mxene as high performance cathode for lithium-sulfur batteries

et al. 2020

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AbstractThe design of sulfur hosts with polar, sulfurphilic, and conductive network is critical to lithium-sulfur (Li-S) batteries whose potential applications are greatly limited by the lithium polysulfide shuttle effect. Mxenes, possessing layered-stacked structures and high electrical conductivities, have a great potential in sulfur hosts. Herein, sulfur nanoparticles uniformly decorated on titanium carbide Mxene (S@Ti3C2Tx Mxene) are synthesized via a hydrothermal method and then utilized as a cathode for lithium-sulfur batteries. This unique architecture could accommodate sulfur nanoparticles expansion during cycling, suppress the shuttling of lithium polysulfide, and enhance electronical conductivity. Consequently, the S@Mxene with a high areal sulfur loading (∼4.0 mg cm−2) exhibits a high capacity (1477.2 mAh g−1) and a low capacity loss per cycle of 0.18% after 100 cycles at 0.2 C. This work may shed lights on the development of high performance sulfur-based cathode materials for Li-S batteries.

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Section: Introductionmentioning

confidence: 99%

Facile synthesis of sulfur@titanium carbide Mxene as high performance cathode for lithium-sulfur batteries

et al. 2020

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“…These properties include high thermal and mechanical stability, high electrical conductivity, and an electronic structure in their outer shell similar to that of Pt. Such characteristics make metal carbides and nitrides promising catalysts that may be used in several different applications 63‐65 . Metal carbides and nitrides exhibit high ORR activity due to their high electrical conductivity and high chemical stability 66 .…”

Section: Introductionmentioning

confidence: 99%

Co‐decorated reduced graphene/titanium nitride composite as an active oxygen reduction reaction catalyst with superior stability

Al‐Dhaifallah¹,

Abdelkareem

Rezk

et al. 2020

Int J Energy Res

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Summary Preparing a cost‐effective, active, stable, non‐precious catalyst, especially at the cathode, is one of the basic requirements for the commercialization of fuel cells (FCs). In this study, cobalt nanoparticles composite with titanium nitride (TiN) were prepared on the surface of reduced graphene oxide, using a facile hydrothermal method, followed by heat treatment under an inert atmosphere. The surface morphology, surface composition, and crystalline structure are investigated with the use of field emission‐scanning electron microscopy, X‐ray photoelectron spectroscopy, and X‐ray diffraction, respectively. The oxygen reduction reaction (ORR) activity is examined in sulfuric acid (0.5 M H2SO4), under nitrogen and oxygen bubbling. Results showed that there is an optimum ratio of the Co and the TiN that maximizes the ORR activity. A high onset potential of 0.926 V vs Ag/AgCl is obtained in the case of CoTiN (30)/Gr. This is much higher than that of commercial Pt/C catalyst (0.576 V vs Ag/AgCl). The prepared catalyst has no activity towards methanol oxidation, unlike the Pt/C catalyst. Thus, it considered a promising cathode catalyst for direct alcoholic FCs. Furthermore, the composite catalyst has a high stability, with no activity degradation occurring even after 1000 cycles. This is extremely effective compared to the 20% loss of Pt/C activity under the same operating conditions. The high performance of the prepared catalyst is related to the synergetic effect between the TiN and the Cobalt.

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“…[40][41][42][43] 3 1 2plane diffraction peaks, respectively, which can further conrm the successful synthesis of CF@CoFe 2 O 4 @MnO 2 composite. [44][45][46] Fig . 5 exhibits the XPS spectra of CF@CoFe 2 O 4 @MnO 2 composite.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of a hierarchical carbon fiber@cobalt ferrite@manganese dioxide composite and its application as a microwave absorber

et al. 2020

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Sandwich-like silicon/Ti3C2Tx MXene composite by electrostatic self-assembly for high performance lithium ion battery

Cited by 89 publications

References 42 publications

Facile synthesis of sulfur@titanium carbide Mxene as high performance cathode for lithium-sulfur batteries

Facile synthesis of sulfur@titanium carbide Mxene as high performance cathode for lithium-sulfur batteries

Co‐decorated reduced graphene/titanium nitride composite as an active oxygen reduction reaction catalyst with superior stability

Synthesis of a hierarchical carbon fiber@cobalt ferrite@manganese dioxide composite and its application as a microwave absorber

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