In situ construction of metal-organic frameworks on chitosan-derived nitrogen self-doped porous carbon for high-performance supercapacitors

Zhao, Kai; Sun, Xiaolin; Fu, Hucheng; Guo, Hanwen; Wang, Lei; Li, Da; Liu, Jingquan

doi:10.1016/j.jcis.2022.11.038

Cited by 30 publications

(8 citation statements)

References 49 publications

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“…The device achieves a maximum energy density of 42.6 Wh kg −1 at a power density of 277.3 W kg −1 , and even delivers a high energy density of 36.5 Wh kg g −1 at about 3619.8 W kg −1 . This is comparable to that of MOF‐based device CCA‐Co@MOF//AC, [35] and better to those of some MOF‐based devices, such as C‐Co@MOF//N‐CNT, [36] EO‐Co‐MOF@CoNiO 2 /CC//AC, [37] MOF@NiS 2 //AC, [38] Ni/Co‐MOF//AC, [39] and (Zn/Ni) 2 (bdc) 2 P//AC [40] . Moreover, the as‐prepared device exhibits excellent cycling stability with a capacitance retention of 97.5% after 5000 cycles at 5 A g −1 with a coulomb effectiveness of 92.7% (Figure 5f).…”

Section: Resultssupporting

confidence: 70%

Metal Ion‐controlled Growth of Different Metal‐Organic Framework Micro/nanostructures for Enhanced Supercapacitor Performance

Wang,

Hang,

Zhang

et al. 2023

Chemistry An Asian Journal

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We report a metal ion‐modulated effective strategy to achieve different metal‐organic framework (MOF) micro/nanostructures using different metal precursors like CoCl2·6H2O, CoCl2·6H2O and NiCl2·6H2O, and NiCl2·6H2O with pyridine‐3,5‐dicarboxylate (3,5‐pdc). The structural characterizations confirm that different morphological structures, hollow microsphere, hierarchical nanoflower, and solid nanosphere are for Co‐(3,5‐pdc), Co0.19Ni0.81‐(3,5‐pdc), and Ni‐(3,5‐pdc), respectively. These different MOF micro/nanostructures correlate with the coordination ability of Co and Ni with 3,5‐pdc. Benefitting from the synergistic effect of the alloying metal nodes of Co and Ni producing rapid and rich redox reactions and the hierarchical nanoflower with higher surface area enabling excellent ion kinetics, the Co0.19Ni0.81‐(3,5‐pdc) exhibits higher specific capacitance of 515 F g‐1 at 0.5 A g‐1 than that of Ni‐(3,5‐pdc) (290 F g‐1) and Co‐(3,5‐pdc) (132 F g‐1), good rate capability and cycling stability. Moreover, the asymmetric supercapacitor device (Co0.19Ni0.81‐(3,5‐pdc)//AC) assembled from Co0.19Ni0.81‐(3,5‐pdc) and activated carbon (AC) achieves a maximum energy density of 42.6 Wh kg‐1 at a power density of 277.3 W kg‐1.

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Section: Resultssupporting

confidence: 70%

Metal Ion‐controlled Growth of Different Metal‐Organic Framework Micro/nanostructures for Enhanced Supercapacitor Performance

Wang,

Hang,

Zhang

et al. 2023

Chemistry An Asian Journal

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“…Raman spectroscopy further demonstrated the successful preparation of IPC/NiCoMn-LDH materials. [6,39] X-ray photoelectron spectroscopy (XPS) spectrum of IPC, IPC/ZIF-67 and IPC/NiCoMn-LDH samples were used to analyze the elemental valence states of the materials, thereby confirming the composition of the materials. As shown in Figure 2d, C 1s and O 1s peaks are present in all materials, which are derived from porous carbon materials.…”

Section: Generation and Characterization Of Ipc/nicomn-ldh And Its In...mentioning

confidence: 99%

“…[43] Finally, XPS analysis of the materials combined with XRD analysis results show that IPC/NiCoMn-LDH composites have been successfully synthesized. [39] In addition, Figure 2h,i show the N 2 adsorption/desorption isotherms of IPC and IPC/NiCoMn materials respectively, and the inset shows the pore size distribution. IPC/NiCoMn-LDH has a large specific surface area of 151.7 cm 2 g −1 , which can provide abundant active sites for electrochemical reactions.…”

Section: Generation and Characterization Of Ipc/nicomn-ldh And Its In...mentioning

confidence: 99%

In Situ Construction of NiCoMn‐LDH Derived from Zeolitic Imidazolate Framework on Eggshell‐Like Carbon Skeleton for High‐Performance Flexible Supercapacitors

Lu,

Zhao,

Guo

et al. 2023

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Active compounds based on LDH (ternary layered double hydroxide) are considered the perfect supercapacitor electrode materials on account of their superior electrochemical qualities and distinct structural characteristics, and flexible supercapacitors are an ideal option as an energy source for wearable electronics. However, the prevalent aggregation effect of LDH materials results in significantly compromised actual specific capacitance, which limits its broad practical applications. In this research, a 3D eggshell‐like interconnected porous carbon (IPC) framework with confinement and isolation capability is designed and synthesized by using glucose as the carbon source to disperse the LDH active material and enhance the conductivity of the composite material. Second, by constructing NiCoMn‐LDH nanocage structure based on ZIF‐67 (zeolitic imidazolate framework‐67) at the nanometer scale the obtained IPC/NiCoMn‐LDH electrode material can expose more active sites, which allows to achieve excellent specific capacitance (2236 F g−1/ 310.6 mAh g−1 at 1 A g−1), good rate as well as the desired cycle stability (85.9% of the initial capacitance upon 5000 cycles test). The constructed IPC/NiCoMn‐LDH//IPC ASC (asymmetric supercapacitor) exhibits superior capacitive property (135 F g−1/60.1 mAh g−1 at 0.5 A g−1) as well as desired energy density (40 Wh kg−1 at 800 W kg−1).

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“…Common electrode material synthesis methods include hydrothermal, precipitation, and sol-gel methods [19][20][21]. However, these methods take a long time, and the subsequent processing steps are cumbersome.…”

Section: Introductionmentioning

confidence: 99%

Microwave-Assisted Synthesis of Few-Layer Ti3C2Tx Loaded with Ni0.5Co0.5Se2 Nanospheres for High-Performance Supercapacitors

Wu,

Shen,

Jin

2024

Materials

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Transition metal selenides have high theoretical capacities, making them attractive candidates for energy storage applications. Here, using the microwave-absorbing properties of the materials, we designed a simple and efficient microwave-assisted synthesis method to produce a composite made of nanospheres Ni0.5Co0.5Se2 (NCSe) and highly conductive, stable Ti3C2Tx MXene. The Ni0.5Co0.5Se2/Ti3C2Tx composites are characterized via scanning electron microscopy, X-ray diffraction, cyclic voltammetry, and electrochemical impedance spectroscopy. The findings indicate that 3D Ni0.5Co0.5Se2 bimetallic selenide nanospheres were uniformly loaded within the few-layer Ti3C2Tx MXene wrapper in a short period. The optimal NCSe/Ti3C2Tx−2 electrode can demonstrate a specific capacitance of 752.4 F g–1 at 1 A g–1. Furthermore, the asymmetric supercapacitor combined with activated carbon maintains a capacitance retention of 110% even after 5000 cycles. The method of directly growing active substances on few-layer Ti3C2Tx MXene will provide inspiration for the manufacture of high-pseudocapacitance supercapacitors.

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In situ construction of metal-organic frameworks on chitosan-derived nitrogen self-doped porous carbon for high-performance supercapacitors

Cited by 30 publications

References 49 publications

Metal Ion‐controlled Growth of Different Metal‐Organic Framework Micro/nanostructures for Enhanced Supercapacitor Performance

Metal Ion‐controlled Growth of Different Metal‐Organic Framework Micro/nanostructures for Enhanced Supercapacitor Performance

In Situ Construction of NiCoMn‐LDH Derived from Zeolitic Imidazolate Framework on Eggshell‐Like Carbon Skeleton for High‐Performance Flexible Supercapacitors

Microwave-Assisted Synthesis of Few-Layer Ti3C2Tx Loaded with Ni0.5Co0.5Se2 Nanospheres for High-Performance Supercapacitors

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