Controllable synthesis of NiSe/MoSe2/MoO2 3D hierarchical hollow microspheres with enhanced performance for asymmetric supercapacitors

Liu, Yanxia; Zheng, Yiteng; Xu, Qiuchen; Shi, Yingying; Tian, Zhangmin; wang, Ran; Chen, Jianbin; Wang, Zhen; Zheng, Wenjun

doi:10.1016/j.cej.2020.124121

Cited by 42 publications

(13 citation statements)

References 51 publications

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“…The MoSe 2 /C-200//AC SICs can reach an energy density of 116.5 W h kg –1 when the power density is 107.5 W kg –1 , and the energy density remains at 72.3 W h kg –1 when the power density is 10,750 W kg –1 . The performance of the MoSe 2 /C-200//AC SICs is better than that of the reported MoSe 2 -based SICs including MoO 2 /MoSe 2 -G//AC (70.3 W h kg –1 at 63.7 W kg –1 ), MoSe 2 -G//AC (82 W h kg –1 at 63 W kg –1 ), NiCoP@MoSe 2 //AC (55.1 W h kg –1 at 799.8 W kg –1 ), NiSe/MoSe 2 /MoO 2 //AC (48.1 W h kg –1 at 428 W kg –1 ), and MoSe 2 /SnO 2 //AC (70 W h kg –1 at 62 W kg –1 ) . The cycling durability of the MoSe 2 /C-200//AC SICs is presented in Figure e, which shows that 91.3% of the initial capacitance was maintained after 4000 cycles at 1 A g –1 .…”

Section: Resultsmentioning

confidence: 69%

“…The GCD profile is a slightly distorted quasitriangle, indicating a mixed charge storage mechanism (Figure 6c). Figure 6d NiSe/MoSe 2 /MoO 2 //AC (48.1 W h kg −1 at 428 W kg −1 ), 62 and MoSe 2 /SnO 2 //AC (70 W h kg −1 at 62 W kg −1 ). 63 The cycling durability of the MoSe 2 /C-200//AC SICs is presented in Figure 6e, which shows that 91.3% of the initial capacitance was maintained after 4000 cycles at 1 A g −1 .…”

Section: Resultsmentioning

confidence: 99%

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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: Resultsmentioning

confidence: 69%

Section: Resultsmentioning

confidence: 99%

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

et al. 2023

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“…19 On the other hand, molybdenum dioxide (MoO 2 ) is advantageous for low metallic resistivity (8.8 × 10 −5 Ω cm), multiple valence states, and strong metallic Mo−Mo bond, thus highlighting the construction of heterophase structures with metal-based compounds to improve the charge transfer. 20 Considering that metallic MoO 2 can act as the charge transport path to further improve the conductivity of Cu 2−x Se and then achieve outstanding lithium storage performance, a MoO 2 /Cu 2−x Se hybrid structure is expected to be fabricated. Nevertheless, the synthesis of such a structure is not easy and the high rate performance is still a challenge.…”

Section: ■ Introductionmentioning

confidence: 99%

Hetero-Phase MoO₂/Cu_2–xSe Nanocomposites Distributed in Porous Octahedral Carbon Networks for High-Performance Lithium Storage

Zhong,

Guo,

et al. 2023

ACS Appl. Nano Mater.

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Owing to the mixed insertion and multielectron conversion reaction mechanisms, nonstoichiometric copper selenide (Cu2–x Se) has been known as a potential anode for lithium-ion batteries. However, huge volume changes during discharge and charge limit its ability for lithium-ion storage. Constructing heterophase nanocomposite uniformly distributed in the carbon network has been recognized as an effective approach to address the above issue. In this work, polyoxometalate-based metal–organic frameworks were used as the self-template to derive octahedral mesoporous carbon-coated heterophase copper selenide and molybdenum dioxide (MoO2/Cu2–x Se@C) nanocomposites, and the phase transformation of copper selenides from CuSe to Cu2–x Se can be achieved by tuning the pyrolysis temperature, thus optimizing the electrochemical performance. As a result, the optimized electrode delivers a high reversible specific capacity of 864.8 mAh g–1 at 0.2 A g–1 after 100 cycles, an excellent rate capability with a capacity of 480.9 mAh g–1 at 2.0 A g–1, and a long-term stability up to 500 cycles with a capacity decay rate per cycle of only 0.003%. Also, the reaction mechanism and structural stability after cycling were analyzed in detail.

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“…The structure and character of nanomaterials determine their function and applications. In particular, as a kind of distinctive morphology, hollow microsphere (HMS) structures have been widely used in various fields, including catalysis, [1,2] sensing, [3,4] ion batteries, [5,6] supercapacitors, [7] photochemical solar cells, [8] and drug delivery, [9,10] due to their hollow structure, unique optical and electrical properties, large surface area, and good electronic transfer channels. However, most HMS materials are usually synthesized by either hydrothermal methods or hard template methods, which suffer from high security requirements, complicated template removal procedures, high temperatures (even calcination), and the use of harmful surfactants or organic solvents.…”

Section: Introductionmentioning

confidence: 99%

“…However, most HMS materials are usually synthesized by either hydrothermal methods or hard template methods, which suffer from high security requirements, complicated template removal procedures, high temperatures (even calcination), and the use of harmful surfactants or organic solvents. [3][4][5][6][7][8][9] Therefore, it is urgent and interesting to develop a convenient and green synthesis method for HMS materials.…”

Section: Introductionmentioning

confidence: 99%

Denatured proteins show new vitality: Green synthesis of germanium oxide hollow microspheres with versatile functions by denaturing proteins around bubbles

et al. 2022

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The hollow structure has long attracted great attention because of its excellent properties. However, this special structure is usually synthesized through some complex approaches. Herein, we discovered that denatured bovine serum albumin (BSA) can trigger unusual biomineralization for the simple, green and shape‐controllable synthesis of germanium oxide (GeOx) hollow microsphere (HMS). At high temperature (60°C), BSA was denatured, and a compact BSA layer was formed around the H2 bubbles. The denatured BSA layer was stable and suitable for anchoring and growing GeOx. By simply changing the BSA concentration and temperature, various morphologies of GeOx could be obtained. Due to the denatured protein skeletons and microenvironment‐regulated collapse, GeOx HMS showed great potential for intelligently responsive pesticide delivery in the insect gut, showing superiority over traditional delivery systems, which early release pesticides in the mouth and stomach. Inspired by its large specific surface area, excellent biocompatibility, modifiable functional groups, and high electrocatalytic activity, GeOx HMS was also applied to versatile sensors for H2O2 assays at physiological pH and rapid coronavirus COVID‐19 detection. This work not only provides some evidence for understanding proteins in depth but also paves a new avenue for the biomineralization‐inspired synthesis of hollow structures with versatile functions.

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Controllable synthesis of NiSe/MoSe2/MoO2 3D hierarchical hollow microspheres with enhanced performance for asymmetric supercapacitors

Cited by 42 publications

References 51 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

Hetero-Phase MoO₂/Cu_2–xSe Nanocomposites Distributed in Porous Octahedral Carbon Networks for High-Performance Lithium Storage

Denatured proteins show new vitality: Green synthesis of germanium oxide hollow microspheres with versatile functions by denaturing proteins around bubbles

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Controllable synthesis of NiSe/MoSe2/MoO2 3D hierarchical hollow microspheres with enhanced performance for asymmetric supercapacitors

Cited by 42 publications

References 51 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

Hetero-Phase MoO2/Cu2–xSe Nanocomposites Distributed in Porous Octahedral Carbon Networks for High-Performance Lithium Storage

Denatured proteins show new vitality: Green synthesis of germanium oxide hollow microspheres with versatile functions by denaturing proteins around bubbles

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

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

Hetero-Phase MoO₂/Cu_2–xSe Nanocomposites Distributed in Porous Octahedral Carbon Networks for High-Performance Lithium Storage