Preparation and electrochemical performance of MWCNT/MoS2 composite modified Co–P hydrogen storage material

Liu, Heng; Jin, Feifei; Liu, Dayong; Liu, Wanqiang; Zhao, Jianxun; Chen, Peng; Wang, Qingshuang; Wang, Xinwei; Zou, Yongjin

doi:10.1016/j.solidstatesciences.2022.106952

Cited by 17 publications

(4 citation statements)

References 35 publications

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“…The Mo 3d region (Figure E) can be deconvoluted into three peaks of Mo 3d 5/2 and Mo 3d 3/2 at ca. 228.84 and 232.49 eV to verify Mo (IV), while the peak at 235.38 eV relates to Mo (VI) owing to the oxidation of Mo (IV) by oxygen. ,, The peak located at 226 eV of Mo 3d-S 2s spectra corresponds to S 2s (Figure E). Three distinctive peaks of S 2p 3/2 and S 2p 1/2 appear with binding energies at 161.81, 168.57, and 163.08 eV, respectively, assigning to the divalent sulfide ions (S 2– ) (Figure F). ,, The coexistence of Ag + , S 2– , and Mo 4+ with various valence states is greatly beneficial for improving the catalytic performance.…”

Section: Resultsmentioning

confidence: 99%

“…228.84 and 232.49 eV to verify Mo (IV), while the peak at 235.38 eV relates to Mo (VI) owing to the oxidation of Mo (IV) by oxygen. 28,40,41 The peak located at 226 eV of Mo 3d-S 2s spectra corresponds to S 2s (Figure 2E). Three distinctive peaks of S 2p 3/2 and S 2p 1/2 appear with binding energies at 161.81, 168.57, and 163.08 eV, respectively, assigning to the divalent sulfide ions (S 2− ) (Figure 2F).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Interfacing Ag₂S Nanoparticles and MoS₂ Nanosheets on Polypyrrole Nanotubes with Enhanced Catalytic Performance

Jin,

Li,

Zhang

et al. 2024

Inorg. Chem.

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The tubular architecture with multiple components can bring synergistic effects to improve the enzyme-like activity of molybdenum-based nanomaterials. Here, a facile polypyrrole (PPy)-protected hydrothermal sulfidation process was implemented to engineer MoS 2 /Ag 2 S heterointerfaces encapsulated in one-dimensional (1D) PPy nanotubes with MoO 3 @Ag nanorods as the selfsacrificing precursor. Notably, the sulfidation treatment led to the generation of MoS 2 nanosheets (NSs) and Ag 2 S nanoparticles (NPs) and the creation of a tubular structure with a "kill three birds with one stone" role. The Ag 2 S/MoS 2 @ PPy nanotubes showed the synergistic combined effects of Ag 2 S NPs, MoS 2 NSs, and the 1D tube-like nanostructure. Based on the synergistic effects from these multiple components and the tubular structure, Ag 2 S/MoS 2 @PPy nanocomposites were used as a colorimetric sensing platform for detecting H 2 O 2 . Moreover, the reduction of 4-nitrophenol (4-NP) revealed excellent catalytic activity in the presence of NaBH 4 and Ag 2 S/MoS 2 @PPy nanocomposites. This work highlights the effects of MoS 2 /Ag 2 S heterointerfaces and the hierarchical tubular structure in catalysis, thereby providing a new avenue for reducing 4-NP and the enzyme-like catalytic field.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Interfacing Ag₂S Nanoparticles and MoS₂ Nanosheets on Polypyrrole Nanotubes with Enhanced Catalytic Performance

Jin,

Li,

Zhang

et al. 2024

Inorg. Chem.

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“…The combination of carbon nanotubes and metal alloys effectively improves the electrochemical hydrogen storage performance of materials. Liu et al 161 created MWCNT/MoS 2 composite by a solvothermal method. The MWCNT/MoS 2 coating on the Co−P surface was found to be effective in improving the reaction kinetics and electrochemical activity of the Co−P electrode.…”

Section: Carbonaceous Materialsmentioning

confidence: 99%

Electrochemical Hydrogen Storage Materials: State-of-the-Art and Future Perspectives

Xu,

Dong,

et al. 2024

Energy Fuels

267

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Hydrogen is the energy carrier with the highest energy density and is critical to the development of renewable energy. Efficient hydrogen storage is essential to realize the transition to renewable energy sources. Electrochemical hydrogen storage technology has a promising application due to its mild hydrogen storage conditions. However, research on the most efficient electrochemical hydrogen storage materials that satisfy the goals of the U.S. Department of Energy remain open questions. All of the above require strategies for designing new hydrogen storage materials. This review provides a brief overview of hydrogen preparation, hydrogen storage, and details the development of electrochemical hydrogen storage materials. We summarize the electrochemical hydrogen storage capabilities of alloys and metal compounds, carbonaceous materials, metal oxides, mixed metal oxides, metal−organic frameworks, MXenes, and polymer-based materials. It was observed that mixed metal oxides exhibit superior discharge capacity and cycling stability. The review indicates that it is vital to create novel materials with large surface area, active-conductive profiles, and low cost. We describe the challenges, gaps, and future perspectives of electrochemical hydrogen storage materials, and hope that the review could draw more attention to the development of electrochemical hydrogen storage materials with high hydrogen storage capacity, high safety, high cycle stability, and low cost and promoting their practical applications.

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“…have been added to various kinds of Co-based alloys and other hydrogen storage materials as the active dopants. [21][22][23] In recent studies, CoS 2 materials combined with twodimensional carbon material have exhibited excellent performance as the energy storage material. A facile hydrothermal reaction was conducted by Xu et al to prepare hierarchical architecture of CoS 2 /graphene/carbon nanotubes composite via self-assembled interwoven.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a Porous CoS₂‐CN/MWCNTs Composite Derived from ZIF‐67 for Electrochemical Hydrogen Storage Applications

et al. 2023

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The porous CoS 2 /nitrogen-doped carbon (CoS 2 -CN) polyhedrons were prepared using metal-organic framework as the precursor. After the carbonization of zeolitic imidazolate framework ZIF-67 and the heat treatment with sulfur, the CoS 2 -CN composite was obtained. Multi-walled carbon nanotubes (MWCNTs) were introduced and evenly intertwined with the CoS 2 -CN. Eventually, CoS 2 -CN and Co-CN exhibited good discharge capacities of 498.3 mAh/g and 402.2 mAh/g, respectively. For electrochemical hydrogen storage, more electrochemical active sites could be provided owing to the extra-ordinary porous nanostructure and large specific surface area inherited from ZIF-67. The N-doped carbon could enhance the conductivity of the materials. The CoS 2 -CN electrode revealed higher discharge capacity than Co-CN due to the introduction of sulfur species. Moreover, the discharge capacity further increased to 542.8 mAh/g for CoS 2 -CN/MWCNTs. The loaded MWCNTs could further enhance the conductivity and electrocatalytic activity of CoS 2 -CN. The high-rate dischargeability, kinetic properties and corrosion resistance were also improved after MWCNTs modification.

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Preparation and electrochemical performance of MWCNT/MoS2 composite modified Co–P hydrogen storage material

Cited by 17 publications

References 35 publications

Interfacing Ag₂S Nanoparticles and MoS₂ Nanosheets on Polypyrrole Nanotubes with Enhanced Catalytic Performance

Interfacing Ag₂S Nanoparticles and MoS₂ Nanosheets on Polypyrrole Nanotubes with Enhanced Catalytic Performance

Electrochemical Hydrogen Storage Materials: State-of-the-Art and Future Perspectives

Synthesis of a Porous CoS₂‐CN/MWCNTs Composite Derived from ZIF‐67 for Electrochemical Hydrogen Storage Applications

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Preparation and electrochemical performance of MWCNT/MoS2 composite modified Co–P hydrogen storage material

Cited by 17 publications

References 35 publications

Interfacing Ag2S Nanoparticles and MoS2 Nanosheets on Polypyrrole Nanotubes with Enhanced Catalytic Performance

Interfacing Ag2S Nanoparticles and MoS2 Nanosheets on Polypyrrole Nanotubes with Enhanced Catalytic Performance

Electrochemical Hydrogen Storage Materials: State-of-the-Art and Future Perspectives

Synthesis of a Porous CoS2‐CN/MWCNTs Composite Derived from ZIF‐67 for Electrochemical Hydrogen Storage Applications

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Product

Resources

About

Interfacing Ag₂S Nanoparticles and MoS₂ Nanosheets on Polypyrrole Nanotubes with Enhanced Catalytic Performance

Interfacing Ag₂S Nanoparticles and MoS₂ Nanosheets on Polypyrrole Nanotubes with Enhanced Catalytic Performance

Synthesis of a Porous CoS₂‐CN/MWCNTs Composite Derived from ZIF‐67 for Electrochemical Hydrogen Storage Applications