Construction of strawberry-like Ni3S2@Co9S8 heteronanoparticle-embedded biomass-derived 3D N-doped hierarchical porous carbon for ultrahigh energy density supercapacitors

Wang, Shifu; Xiao, Zuoyi; Zhai, Shangru; Wang, Haisong; Cai, Wei; Qin, Longfei; Huang, Jianying; Zhao, Di; Li, Zhongcheng; An, Qingda

doi:10.1039/c9ta05145g

Cited by 103 publications

(28 citation statements)

References 56 publications

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“…The charge transfer resistance (R ct ) can be obtained from the semicircle in the high-frequency region on the real axis. [41][42][43] Among them, MoO 3 -Ni 3 S 2 /NF-0.5 exhibits the lowest R ct and the highest linear slope in the low-frequency region, further indicating that the conductivity is significantly better than that of a single crystalline phase or amorphous phase. The migration of electrolyte ions on the surface of the amorphous-crystalline structure is easier.…”

Section: Resultsmentioning

confidence: 97%

An Amorphous–Crystalline Nanosheet Arrays Structure for Ultrahigh Electrochemical Performance Supercapattery

Jiang

et al. 2021

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SCs suitable for many different occasions. [1][2][3][4][5][6][7] However, the low energy density limits their extensive commercial applications. Based on the above, hybrid supercapacitors (HSCs) also called supercapattery with battery-type positive electrode as the energy source and electric double-layer capacitor negative electrode as the power source have been designed, it combines the dual advantages of high power density of traditional SCs and high energy density of batteries. [7][8][9][10] Further, the electrochemical properties of the HSCs are mainly determined by the battery-type electrode, so selecting suitable electrode materials or optimizing the electrode structure is essential for obtaining high-performance hybrid devices.Transition metal oxides and sulfides have become the most widely studied battery-type electrodes due to their remarkable electrochemical activity and high specific capacity. [11][12][13] For example, Chen et al. reported the self-supported Ni 3 S 2 nanosheet arrays by a two-step method. Benefiting from its unique 3D sheet structure, the electrode shows superb rate capability and energy density. [14] Kim et al. designed the independent electrode of NiMo 2 S 4 using the successive ionic layer adsorption and reaction (SILAR) method, which also showed high reversible specific capacity. [15] Although some progress has been made in the research of battery-type electrodes, the inherent physical and chemical properties of the single electrode materials may limit the further development. In order to achieve higher electrochemical performance, complex and stable electrode structures are required to be constructed.In the previous work, the first-principles calculations show that amorphous oxides (such as MnO 2 , [16] ) can produce lots of unsaturated suspension bonds, which makes them have a broad application prospect in the field of energy storage. [18][19][20] Liu et al. proposed amorphous manganese oxide as the pseudocapacitive electrode, which proved to possess excellent rate capability and high cycle stability. [21] This may be due to the fact that the loose arrangement of atoms and ions is more conducive to rapid ion transport of the active materials in the bulk of oxides. Sun et al. successfully synthesized MoO 3 by electrochemical deposition technique and pointed out that the disordered structure is likely to release the structural stress caused by the repeated ion deintercalation/intercalation behavior, thus Hybrid supercapacitors (HSCs), also called supercapattery, which can substitute for low power density batteries have attracted extensive interest. However, when HSCs comes to commercial applications, there is still space for improvement in energy density. It seems that designing of electrode with high capacity is an effective measure. Herein, amorphous-crystalline MoO 3 -Ni 3 S 2 /NF-0.5 nanosheet arrays are developed as battery-type electrodes. Specifically, the sheet-like structure of crystalline Ni 3 S 2 can achieve rich structural nanocrystallization, improving the redox reacti...

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Section: Resultsmentioning

confidence: 97%

An Amorphous–Crystalline Nanosheet Arrays Structure for Ultrahigh Electrochemical Performance Supercapattery

Jiang

et al. 2021

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“…Such a robust sandwich-like structure with superior mechanical integration and high electrical conductivity can provide unobstructed pathways for the fast diffusion/transportation of electrolyte ions/electrons during rapid charge/discharge processes, which is beneficial to improve the rate capability. Wang et al [ 117 ] have synthesized a Ni 3 S 2 @Co 9 S 8 /N-HPC composite in which the Ni 3 S 2 attaching Co 9 S 8 nanocrystal was encapsulated into a 3D N-doped hierarchical porous carbon (N-HPC). The strawberry-like Ni 3 S 2 @Co 9 S 8 nanoparticles (average diameter of 900 nm) confined in the carbon skeleton can provide high theoretical specific capacitance, and 3D interconnected hierarchical porous carbon framework can construct fast electrolyte ions/electrons transfer channels.…”

Section: Regulation Of Tmc’s Electronic Structurementioning

confidence: 99%

“…Quantum dots (QDs) have presented an exponential growth of research in various potential applications in the last decades, especially in supercapacitors [ 118 – 121 ]. Due to the quantum effect, TMCs-QDs as electrode materials for supercapacitors have received extensive attention [ 122 ].…”

Section: Regulation Of Tmc’s Electronic Structurementioning

confidence: 99%

Recent Developments of Transition Metal Compounds-Carbon Hybrid Electrodes for High Energy/Power Supercapacitors

et al. 2021

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Due to their rapid power delivery, fast charging, and long cycle life, supercapacitors have become an important energy storage technology recently. However, to meet the continuously increasing demands in the fields of portable electronics, transportation, and future robotic technologies, supercapacitors with higher energy densities without sacrificing high power densities and cycle stabilities are still challenged. Transition metal compounds (TMCs) possessing high theoretical capacitance are always used as electrode materials to improve the energy densities of supercapacitors. However, the power densities and cycle lives of such TMCs-based electrodes are still inferior due to their low intrinsic conductivity and large volume expansion during the charge/discharge process, which greatly impede their large-scale applications. Most recently, the ideal integrating of TMCs and conductive carbon skeletons is considered as an effective solution to solve the above challenges. Herein, we summarize the recent developments of TMCs/carbon hybrid electrodes which exhibit both high energy/power densities from the aspects of structural design strategies, including conductive carbon skeleton, interface engineering, and electronic structure. Furthermore, the remaining challenges and future perspectives are also highlighted so as to provide strategies for the high energy/power TMCs/carbon-based supercapacitors.

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“…Ni 3 S 2 , NiS, Co 9 S 8 , NiCo 2 O 4 and NiCo 2 S 4 have received substantial attention for their good capacitance performance, various oxidation states and abundant raw materials. [8][9][10][11][12][13][14] Compared to many oxides, NiS and Ni 3 S 2 have higher conductivity and richer redox reactions. 10,14 To the best of our knowledge, many researches on high performance electrodes are mainly focused on Ni 3 S 2 , and a good capacitance performance of 2885 F g À1 has been received.…”

Section: Introductionmentioning

confidence: 99%

“…[8][9][10][11][12][13][14] Compared to many oxides, NiS and Ni 3 S 2 have higher conductivity and richer redox reactions. 10,14 To the best of our knowledge, many researches on high performance electrodes are mainly focused on Ni 3 S 2 , and a good capacitance performance of 2885 F g À1 has been received. 15 However, numerous reports indicate that the electrochemical performances of NiS are still unsatisfactory.…”

Section: Introductionmentioning

confidence: 99%

Ultra-thin NiS nanosheets as advanced electrode for high energy density supercapacitors

et al. 2020

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Construction of strawberry-like Ni₃S₂@Co₉S₈ heteronanoparticle-embedded biomass-derived 3D N-doped hierarchical porous carbon for ultrahigh energy density supercapacitors

Abstract: The design of advanced supercapacitors requires electrode materials that combine high surface area with a developed hierarchical porous structure to facilitate ion transport and electrolyte permeability.

Cited by 103 publications

References 56 publications

An Amorphous–Crystalline Nanosheet Arrays Structure for Ultrahigh Electrochemical Performance Supercapattery

An Amorphous–Crystalline Nanosheet Arrays Structure for Ultrahigh Electrochemical Performance Supercapattery

Recent Developments of Transition Metal Compounds-Carbon Hybrid Electrodes for High Energy/Power Supercapacitors

Ultra-thin NiS nanosheets as advanced electrode for high energy density supercapacitors

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