High energy density supercapacitors based on porous mSiO2@Ni3S2/NiS2 promoted with boron nitride and carbon

Song, Fangxiang; Chen, Qianlin; Li, Yan; Li, Yanan; Zhang, Li

doi:10.1016/j.cej.2020.124561

Cited by 43 publications

(9 citation statements)

References 95 publications

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“…The CNCO-D-SO (0.0104 V) exhibited a lower voltage drop than bare CNCO (0.0125) and CNCO-D-SD (0.0122 V) even at a high potential window of 0.55 V (CNCO-D-SO). The lower internal resistance indicates the good electrical conductivity of the substrate and active materials and the fast ion diffusion and charge transfer of CNCO-D-SO. , According to Ohm’s law, the voltage drop (IR drop) at the start of the discharge curve is directly proportional to the equivalent series resistance (ESR). It was observed that the lower IR drop, larger integrated area, and longer discharge curve resulted in a higher capacity output.…”

Section: Resultsmentioning

confidence: 99%

Boron-Doped Trimetallic Cu-Ni-Co Oxide Nanoneedles for Supercapacitor Application

Hussain

Mak

Zhang

2021

ACS Appl. Nano Mater.

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Doping has been one of the efficient ways in incorporating potential elements to further increase electrode efficiencies. The introduction of boron as a dopant reinforces transition metal to oxide bonding and makes it stable during the cycling process. Herein, we prepared Cu-Ni-Co oxide (CNCO) with agglomerated nanoneedle-like structures in the first step and then structurally doped it with boron (CNCO-D-SD) in the second step. The agglomerated nanoneedle-like structures with merged tips were retained with boron doping, but stability was decreased. Then, we evaluated the incorporation of boron in one step, and, interestingly, it resulted to self-organized, boron-doped Cu-Ni-Co oxide (CNCO-D-SO) one-dimensional (1D) vertically aligned nanoneedle-like structures. Herein, boric acid acted as a dopant as well as a structural-directing agent. The CNCO-D-SO exhibited superior overall electrochemical performance to the CNCO and CNCO-D-SD. Interestingly, the as-assembled hybrid supercapacitor (HSC) device made from CNCO-D-SO//rGO showed outstanding stability (87% after 8,000 cycles) compared to CNCO-D-SD//rGO (46% after 5,000 cycles) and bare CNCO//rGO (53% after 5,000 cycles). This study demonstrates that doping can improve the stability and/or capacity of Cu-Ni-Co oxide, but the nature of the active materials is also equally important for achieving satisfactory performance. Furthermore, this study suggests a more efficient as well as time-, energy-, and cost-saving preparation of structured electrodes. Overall, the outcomes showed that the as-assembled CNCO-D-SO//rGO HSC device had higher storage capacity, better stability and conductivity, and scalable time-saving fabrication, suggesting that it has great potential in next-generation energy storage applications.

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Section: Resultsmentioning

confidence: 99%

Boron-Doped Trimetallic Cu-Ni-Co Oxide Nanoneedles for Supercapacitor Application

Hussain

Mak

Zhang

2021

ACS Appl. Nano Mater.

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“…Supercapacitors have recently been in high demand for energy storage due to their peculiar characteristics of high-power density, swift charge/discharge capability, and better safety records and a long-life cycle in comparison to batteries [106,109]. Over the last decade, 2D h-BN nanostructures (i.e., functionalized and/or doped ones) and their heterostructures have been introduced as promising inorganic materials to improve the performance of supercapacitors [35,[110][111][112]. The 2D h-BN modifications can generate available free electrons or enhance the mobility of the charge carriers in order to improve the electrochemical behavior [113][114][115][116].…”

Section: Supercapacitorsmentioning

confidence: 99%

Towards Integration of Two-Dimensional Hexagonal Boron Nitride (2D h-BN) in Energy Conversion and Storage Devices

2022

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The prominence of two-dimensional hexagonal boron nitride (2D h-BN) nanomaterials in the energy industry has recently grown rapidly due to their broad applications in newly developed energy systems. This was necessitated as a response to the demand for mechanically and chemically stable platforms with superior thermal conductivity for incorporation in next-generation energy devices. Conventionally, the electrical insulation and surface inertness of 2D h-BN limited their large integration in the energy industry. However, progress on surface modification, doping, tailoring the edge chemistry, and hybridization with other nanomaterials paved the way to go beyond those conventional characteristics. The current application range, from various energy conversion methods (e.g., thermoelectrics) to energy storage (e.g., batteries), demonstrates the versatility of 2D h-BN nanomaterials for the future energy industry. In this review, the most recent research breakthroughs on 2D h-BN nanomaterials used in energy-based applications are discussed, and future opportunities and challenges are assessed.

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“…Figure h shows the Ragon curves of (Cu x Ni 1– x )S 2 //AC HSC compared with NiS 2 -related works. The (Cu x Ni 1– x )S 2 //AC HSC displays a high energy density of 82.4 W h kg –1 at a power density of 1.82 kW kg –1 and still maintains a high energy density of 59.8 W h kg –1 at a power density of 19.0 kW kg –1 , which is higher than most of the NiS 2 -based works, such as NiS x @NCV//NPC, NiS 2 //carbon, Ni 0.32 Co 0.68 S 2 //AC, NiS 2 //Re-GO, mSiO 2 @Ni 3 S 2 /NiS 2 //mSiO 2 @Ni 3 S 2 /NiS 2 , NiMoO 4 @NiS 2 /MoS 2 //AC, Ni-MOF@NiS 2 @C//AC, NiS 2 –C//AC, NiS 2 @MoS 2 //AC, (Ni, Cu)Se 2 //RGO, and N-GNTs@NiCoSe 2 /Ni 3 Se 2 //AC . A comprehensive comparison table of (Cu x Ni 1– x )S 2 with NiS 2 -related reported materials is shown in Table , indicating that the properties of (Cu x Ni 1– x )S 2 in the material’s view and device’s view are superior to the most reported NiS 2 -based materials.…”

Section: Resultsmentioning

confidence: 99%

Tremella-like 2D Nickel–Copper Disulfide with Ultrahigh Capacity and Cyclic Retention for Hybrid Supercapacitors

Liu

2022

ACS Appl. Mater. Interfaces

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disulfides possess unique physical and chemical properties and are widely used in electronic and photoelectric devices. Tuning the composition and optimizing the structure of the disulfides are feasible approaches to designing target sulfides for hybrid supercapacitors. This work synthesizes the tremella-like nanosheet-connected (Cu x Ni 1−x )S 2 via solvothermal and sulfur-vapor vulcanization. The 2D (Cu x Ni 1−x )S 2 electrode performs a high reversible capacity (526.0 mA h g −1 at 1 A g −1 ), decent capacity retention (75.6%) at 10 A g −1 , and prolonged cyclic retention (94.4% over 15,000 cycles), which is higher than that of (Cu x Ni 1−x )O and monometallic sulfides of NiS 2 and CuS. The elevated electrochemical properties of (Cu x Ni 1−x )S 2 are attributed to the optimized composition with increased redox reaction, enlarged lattice distance, abundant active sites, and attractive electronic and ionic conductivity. Also, (Cu x Ni 1−x )S 2 and active carbon (AC) are assembled to form a hybrid supercapacitor (HSC). The (Cu x Ni 1−x )S 2 //AC HSC demonstrates a maximum specific capacitance of 231.0 F g −1 at 1 A g −1 and a high energy density of 82.4 W h kg −1 at a power density of 1.82 kW kg −1 . Outstanding cyclic retentions of 94.9 and 84.5% after 8000 and 10,000 cycles are also obtained. In conclusion, this result suggests a facile routine for preparing a novel 2D layer material of (Cu x Ni 1−x )S 2 with outstanding specific capacity and cycling performance for hybrid supercapacitors.

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High energy density supercapacitors based on porous mSiO2@Ni3S2/NiS2 promoted with boron nitride and carbon

Cited by 43 publications

References 95 publications

Boron-Doped Trimetallic Cu-Ni-Co Oxide Nanoneedles for Supercapacitor Application

Boron-Doped Trimetallic Cu-Ni-Co Oxide Nanoneedles for Supercapacitor Application

Towards Integration of Two-Dimensional Hexagonal Boron Nitride (2D h-BN) in Energy Conversion and Storage Devices

Tremella-like 2D Nickel–Copper Disulfide with Ultrahigh Capacity and Cyclic Retention for Hybrid Supercapacitors

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