High-performance Li–Se battery: Li2Se cathode as intercalation product of electrochemical in situ reduction of multilayer graphene-embedded 2D-MoSe2

Bui, Hoa Thi; Jang, Hyungil; Ahn, Doyoung; Han, Joong-Hee; Sung, Myung Mo; Kutwade, Vishnu V.; Patil, Madhuri; Sharma, Ramphal; Han, Sang Woo

doi:10.1016/j.electacta.2020.137556

Cited by 24 publications

(7 citation statements)

References 44 publications

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“…The enlarged interlayer spacing of MoSe 2 /C is due to the incorporation of carbon atoms into the Se–Mo–Se layers, impeding the stacking along the (002) plane. Similar results were found in the previously reported papers. , In addition, MoSe 2 /C-200 shows the lattice spacing undulation (Figure S4) because carbon layers are not fully or continuously inserted into the superstructures . This lattice fluctuation phenomenon further confirms the existence of carbon in the MoSe 2 layers.…”

Section: Resultssupporting

confidence: 90%

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2D Heterolayer-Structured MoSe₂-Carbon with Fast Kinetics for Sodium-Ion Capacitors

et al. 2023

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Two-dimensional (2D) layered MoSe2 has been demonstrated to be a promising electrode material for new energy storage systems. However, its nature of poor conductivity and the undesirable interlayer spacing hinder its further application. In this paper, a general and simple plasma-enhanced chemical vapor deposition method is proposed to produce 2D heterolayer-structured MoSe2-carbon (MoSe2/C) with carbon atoms inserted in the MoSe2 layers. After morphology optimization, when applying flat-type MoSe2/C-200 nanosheets with an enlarged interlayer spacing of 0.79 nm as the anode and activated carbon as the cathode, the assembled sodium-ion hybrid capacitors can reach a maximum energy/power density of 116.5 W h kg–1/107.5 W kg–1 and exhibit superior cycling durability (91.3% capacitance retention after 4000 cycles at 1 A g–1). The good electrochemical property can be ascribed to the enlarged interlayer spacing that can offer fast diffusion channels for Na ions, and the carbon layer sandwiched in the MoSe2 layer can not only enhance the electron transfer, accelerating the reaction kinetics, but also alleviate the volume change of MoSe2, ensuring the good stability of the electrode. The proposed approach can also be extended to other 2D transition metal chalcogenide (TMC) materials for constructing the TMC/C heterostructures for the application in energy storage systems.

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Section: Resultssupporting

confidence: 90%

“…Similar results were found in the previously reported papers. 31,32 In addition, MoSe 2 /C-200 shows the lattice spacing undulation (Figure S4) because carbon layers are not fully or continuously inserted into the superstructures. 33 This lattice fluctuation phenomenon further confirms the existence of carbon in the MoSe 2 layers.…”

Section: Resultsmentioning

confidence: 99%

2D Heterolayer-Structured MoSe₂-Carbon with Fast Kinetics for Sodium-Ion Capacitors

et al. 2023

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“…Through a solvothermal method, Sharma's group has successfully synthesized a graphene-coated layered MoSe 2 called ML-Gr-MoSe 2 (MGM) [17]. The product is obtained by synthesis of polypropylviologen, synthesis of selenoaceta, and finally by heating reflux and calcination, and applied to the cathode of lithium ion batteries.The ML-Gr-MoSe 2 composite exhibits cross-linked layered structure, large specific surface area and good conductive properties (Fig.…”

Section: Examples Of Application Of Layered Graphene Materialsmentioning

confidence: 99%

Performance of Lithium Ion Battery with Graphene Microstructure in Cathode

2022

J. Phys.: Conf. Ser.

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Lithium-ion battery is a promising energy source with high output voltage, large energy density, low auto discharge, and no memory effect. Graphene, as a dimensional carbon material, has excellent electrical conductivity, strong mechanical properties, a large specific surface area, which has been widely applied in lithium-ion battery for modifying the cathode material of lithium secondary batteries, thus significantly promoting the flow performance, conductivity, and cycling stability of Li secondary batteries. In this review, we discussed the excellent properties of various cathode materials based on graphene with different microstructures including three dimensional network structure, Core/Shell structure, layered structure, porous structure, and sandwich structure, which could provide motivations for improving the performance of the lithium-ion battery.

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“…Table 1 compares the electrochemical properties of Se, S, and LiCoO 2 cathodes. Se has a 20-fold higher electrical conductivity than S and is comparable to LiCoO 2 [19][20][21][22][23]. Additionally, Se-based cathodes performed well in carbonate-based electrolytes, which are less expensive and have higher voltage stability than ether-based electrolytes [24].…”

Section: Introductionmentioning

confidence: 99%

Recent Advancements in Selenium-Based Cathode Materials for Lithium Batteries: A Mini-Review

et al. 2022

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Selenium (Se)-based cathode materials have garnered considerable interest for lithium-ion batteries due to their numerous advantages, including low cost, high volumetric capacity (3268 mAh cm−3), high density (4.82 g cm−3), ability to be cycled to high voltage (4.2 V) without failure, and environmental friendliness. However, they have low electrical conductivity, low coulombic efficiency, and polyselenide solubility in electrolytes (shuttle effect). These factors have an adverse effect on the electrochemical performance of Li-Se batteries, rendering them unsuitable for real-world use. In this study, we briefly examined numerous approaches to overcoming these obstacles, including selecting an adequate electrolyte, the composition of Se with carbonaceous materials, and the usage of metal selenide base electrodes. Furthermore, we examined the effect of introducing interlayers between the cathode and the separator. Finally, the remaining hurdles and potential study prospects in this expanding field are proposed to inspire further insightful work.

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High-performance Li–Se battery: Li2Se cathode as intercalation product of electrochemical in situ reduction of multilayer graphene-embedded 2D-MoSe2

Cited by 24 publications

References 44 publications

2D Heterolayer-Structured MoSe₂-Carbon with Fast Kinetics for Sodium-Ion Capacitors

2D Heterolayer-Structured MoSe₂-Carbon with Fast Kinetics for Sodium-Ion Capacitors

Performance of Lithium Ion Battery with Graphene Microstructure in Cathode

Recent Advancements in Selenium-Based Cathode Materials for Lithium Batteries: A Mini-Review

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High-performance Li–Se battery: Li2Se cathode as intercalation product of electrochemical in situ reduction of multilayer graphene-embedded 2D-MoSe2

Cited by 24 publications

References 44 publications

2D Heterolayer-Structured MoSe2-Carbon with Fast Kinetics for Sodium-Ion Capacitors

2D Heterolayer-Structured MoSe2-Carbon with Fast Kinetics for Sodium-Ion Capacitors

Performance of Lithium Ion Battery with Graphene Microstructure in Cathode

Recent Advancements in Selenium-Based Cathode Materials for Lithium Batteries: A Mini-Review

Contact Info

Product

Resources

About

2D Heterolayer-Structured MoSe₂-Carbon with Fast Kinetics for Sodium-Ion Capacitors

2D Heterolayer-Structured MoSe₂-Carbon with Fast Kinetics for Sodium-Ion Capacitors