In-situ formation of MOFs derivatives CoSe2/Ni3Se4 nanosheets on MXene nanosheets for hybrid supercapacitor with enhanced electrochemical performance

Yang, Yuan; Huang, Xiaoyu; Sheng, Congyi; Pan, Yaoyao; Huang, Yin; Wang, Xiuhua

doi:10.1016/j.jallcom.2022.165908

Cited by 42 publications

(8 citation statements)

References 56 publications

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“…[22,36] For the CN-SNA, the peak situated at 508 cm −1 is the characteristic peak of (Ni, Co)-Se. [37,38] Besides the above peaks, two broad characteristic peaks of Ni(OH) 2 at 318 and 1045 cm −1 are also observed, which correspond to the amorphous structure as revealed in the HRTEM image of the sample (Figure 2b). [39] Considering the main content of Ni element in the amorphous range, the outlayer material should be amorphous Ni(OH) 2 .…”

Section: Resultsmentioning

confidence: 87%

Metal Selenide‐Based Superstructure Nanoarrays with Ultrahigh Capacity for Alkaline Zn Batteries

Zhang,

Xing,

Duan

et al. 2023

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Transition metal selenides (TMSs) have great potential as cathode materials for alkaline Zn batteries (AZBs) owing to their high theoretical capacity and metallic conductivity. However, achieving a high specific capacity remains a formidable challenge due to the low structural stability and sluggish reaction kinetics of single‐phase TMS. Herein, a facile method for fabricating a robust CoSe2@Ni3Se4@Ni(OH)2 superstructure nanoarray (CNSNA) as an AZB cathode is presented. The sophisticated design enables structural stability and abundant active surface sites for efficient charge storage. Furthermore, the redox mediator K3[Fe(CN)6] is employed to expedite the reaction kinetics and introduce supplementary redox reactions, further enhancing the charge storage capability. Consequently, the CNSNA electrode delivers an exceptional specific capacitance (609.08 mAh g−1 at 1 A g−1), surpassing all previously reported selenide‐based materials. High‐rate capability (239.37 mAh g−1 at 20 A g−1) and long cycling stability have also been achieved. The comprehensive charge storage mechanism studies confirmed the structural integrity, kinetic improvement, and high reactivity of the CNSNA superstructure. Moreover, the corresponding AZB based on CNSNA demonstrates an extraordinarily high energy density of 516.58 Wh kg−1. The work offers guidance in the construction of superstructure‐based TMS electrode materials, paving the way for the development of high‐performance AZBs.

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Section: Resultsmentioning

confidence: 87%

Metal Selenide‐Based Superstructure Nanoarrays with Ultrahigh Capacity for Alkaline Zn Batteries

Zhang,

Xing,

Duan

et al. 2023

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“…Conversely, at higher scan rates, the process is quicker and there is not enough time for significant ion diffusion. Instead, charge storage is dominated by rapid surface redox reactions and ion adsorption, making it surface-controlled. − …”

Section: Results and Discussionmentioning

confidence: 99%

In Situ Synthesis of Mo and Ti-Dual Oxide-Incorporated Mo₂Ti₂C₃T_x MXene Electrode Using a Lewis Acid-Assisted Method for Pseudocapacitors

Gandla,

Zhou,

Yan

et al. 2024

ACS Appl. Energy Mater.

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MXenes, a class of two-dimensional transition metal carbides and nitrides, hold great promise for electrochemical energy storage applications due to their exceptional electronic conductivity, tunable surface chemistry, and pseudocapacitive charge storage mechanisms. This study introduces a one-step approach to deposit Mo and Ti-dual oxide nanoparticles in situ onto Mo 2 Ti 2 C 3 T x MXene using the Lewis acid molten salt method (LAMS), meticulously optimizing annealing conditions. The incorporation of Mo and Ti dual oxide nanoparticles improves the pristine Mo 2 Ti 2 C 3 T x MXene by preventing collapse of the layered structure and restacking of MXene sheets. Both three-electrode and coin cell devices are assessed in an aqueous electrolyte, illustrating the favorable role of the nanoparticles acting as spacers. Remarkable outcomes include a specific capacity of 434 C g −1 at 5 mA cm −2 , exceptional capacity retention of 94% after 5000 charge−discharge cycles at 50 mA cm −2 , and a high gravimetric energy density of 52.5 W h kg −1 at a power density of 1442 W kg −1 in an aqueous 3 M KOH electrolyte. This research underscores the potential of double transition metal MXenes as energy storage electrodes and an eco-friendly mass synthesis route, contributing to sustainable advancements in energy storage technology. KEYWORDS: Mo 2 Ti 2 C 3 T x MXene, Mo and Ti-dual oxide nanoparticles, double transition metal MXenes, lewis acid molten salt method, energy storage

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“…4g demonstrates that the device outperforms several other reports. 47–51 The details are listed in Table 1. To investigate its mechanical stability, the device was folded at various angles from 30 to 120°, as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

NiO@CoSe₂ nanostructures for high-performance asymmetric supercapacitors and efficient electrocatalysts

et al. 2023

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In-situ formation of MOFs derivatives CoSe2/Ni3Se4 nanosheets on MXene nanosheets for hybrid supercapacitor with enhanced electrochemical performance

Cited by 42 publications

References 56 publications

Metal Selenide‐Based Superstructure Nanoarrays with Ultrahigh Capacity for Alkaline Zn Batteries

Metal Selenide‐Based Superstructure Nanoarrays with Ultrahigh Capacity for Alkaline Zn Batteries

In Situ Synthesis of Mo and Ti-Dual Oxide-Incorporated Mo₂Ti₂C₃T_x MXene Electrode Using a Lewis Acid-Assisted Method for Pseudocapacitors

NiO@CoSe₂ nanostructures for high-performance asymmetric supercapacitors and efficient electrocatalysts

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In-situ formation of MOFs derivatives CoSe2/Ni3Se4 nanosheets on MXene nanosheets for hybrid supercapacitor with enhanced electrochemical performance

Cited by 42 publications

References 56 publications

Metal Selenide‐Based Superstructure Nanoarrays with Ultrahigh Capacity for Alkaline Zn Batteries

Metal Selenide‐Based Superstructure Nanoarrays with Ultrahigh Capacity for Alkaline Zn Batteries

In Situ Synthesis of Mo and Ti-Dual Oxide-Incorporated Mo2Ti2C3Tx MXene Electrode Using a Lewis Acid-Assisted Method for Pseudocapacitors

NiO@CoSe2 nanostructures for high-performance asymmetric supercapacitors and efficient electrocatalysts

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In Situ Synthesis of Mo and Ti-Dual Oxide-Incorporated Mo₂Ti₂C₃T_x MXene Electrode Using a Lewis Acid-Assisted Method for Pseudocapacitors

NiO@CoSe₂ nanostructures for high-performance asymmetric supercapacitors and efficient electrocatalysts