Template-directed growth of hierarchically structured MOF-derived LDH cage hybrid arrays for supercapacitor electrode

Tang, Jiajun; Shen, Yanni; Miao, Xueli; Qin, Hao; Song, Dandan; Li, Yanting; Qu, Yuning; Zhang, Yin; Ren, Jian; Wang, Lili; Wang, Bing

doi:10.1016/j.jelechem.2019.03.073

Cited by 47 publications

(23 citation statements)

References 32 publications

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“…The individual XRD pattern of pure Co-MOF with intense peaks is displayed in Figure S1. In addition, from the XRD patterns of ZNCO@Co–Ni-LDH-1 and ZNCO@Co–Ni-LDH-2, the diffraction peaks at 11.6°, 25.4°, 33°, 35.8°, and 58.8° for LDH (except ZNCO nanomaterials) were indexed to (003), (006), (012), (015), and (110) planes of the hydrotalcite-like LDH phase, which was consistent with the previous report …”

Section: Resultssupporting

confidence: 90%

“…In addition, from the XRD patterns of ZNCO@Co−Ni-LDH-1 and ZNCO@Co−Ni-LDH-2, the diffraction peaks at 11.6°, 25.4°, 33°, 35.8°, and 58.8°for LDH (except ZNCO nanomaterials) were indexed to (003), ( 006), ( 012), (015), and (110) planes of the hydrotalcite-like LDH phase, which was consistent with the previous report. 36 The surface morphologies and microstructure of as-prepared ZNCO, ZNCO@Co-MOF, and ZNCO@Co−Ni-LDH were investigated by FE-SEM Figure 3 shows the FE-SEM images of ZNCO nanoneedles, ZNCO@Co-MOF, ZNCO@Co−Ni-LDH-1, and ZNCO@Co−Ni-LDH-2 nanomaterials, respectively. Figure 3a,b shows the FE-SEM images for ZNCO nanoneedles, which are vertically and uniformly grown over the NF and are supposed to possess characteristic 1D features.…”

Section: ■ Introductionmentioning

confidence: 99%

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Engineering the Hierarchical Heterostructures of Zn–Ni–Co Nanoneedles Arrays@Co–Ni-LDH Nanosheets Core–Sheath Electrodes for a Hybrid Asymmetric Supercapacitor with High Energy Density and Excellent Cyclic Stability

Acharya

Seo

et al. 2020

ACS Appl. Energy Mater.

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To meet the requirement for the high-ranked positive electrode materials having auspicious pseudocapacitive features for potential application in energy storage devices, the suitable designs of unique core−shell heterostructures featuring mixed transition metal oxide and layered double hydroxide (LDH) are highly needed and have been progressing expeditiously in recent years. Herein, 3D hierarchical zinc−nickel−cobalt (ZNCO)@Co−Ni-LDH (LDH-1 and LDH-2) core−shell nanostructured arrays on Ni foam as a pseudocapacitive electrode are prepared by using a facile hydrothermal and metal−organic framework (MOF) assisted coprecipitation method. FE-SEM images show that the core 1D ZNCO and shell 2D Co−Ni-LDH are well interconnected to form 3D porous and hierarchical ZNCO@Co−Ni-LDH core−shell nanostructures, leading to the fast and efficient transmission/transfer of both electrolyte ions and electrons, due to the higher electroactive surface areas and enhanced electrical conductivity. In a three-electrode system, the ZNCO@Co−Ni-LDH-2 electrode material delivers excellent electrochemical performance with higher specific capacitance of 2866 F g −1 at 1 A g −1 with ultrahigh capacitance retention of 68.35% at a higher current density of 10 A g −1 and excellent life span of 89% capacitance retention after 8000 cycles. Moreover, the sandwiched asymmetric supercapacitor (ASC) device using ZNCO@Co−Ni-LDH-2 as the positive electrode and N-doped graphene hydrogel (NGH) as the negative electrode exhibits superior specific capacitance (178 F g −1 at 1 A g −1 ), outstanding rate capability (70.22% at 10 A g −1 ), excellent life span (91.2% after 8000 cycles at 10 A g −1 ), and very high energy density (63.28 W h kg −1 at power density of 796.53 W kg −1 ).

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Section: Resultssupporting

confidence: 90%

Section: ■ Introductionmentioning

confidence: 99%

Engineering the Hierarchical Heterostructures of Zn–Ni–Co Nanoneedles Arrays@Co–Ni-LDH Nanosheets Core–Sheath Electrodes for a Hybrid Asymmetric Supercapacitor with High Energy Density and Excellent Cyclic Stability

Acharya

Seo

et al. 2020

ACS Appl. Energy Mater.

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“…25,50 As shown in the SEM images of the N-doped CuO/Cu sample, the self-assembly of nanoparticles was directed from CuBDC-MeIM(rt) to construct N-CuO/Cu hierarchical structures, which had an inherited flower-like structure consisting of nanosheets (Figure 5a presented a sheet-like structure, with a size of approximately 100 μm × 5 μm (Figure S5), there was no obvious hierarchical structure, this was attributed to the fact that CuBDC-MeIM(rt) had the complete and well-shaped flower-like structure, and using fusiform basic copper nitrate as the metal node, the strong bond between the metal and the ligand prevented the collapse of the structure after pyrolysis. 51 The morphological properties of CuBDC-MeIM(rt) pyrolyzed at 573 K significantly affected the physicochemical properties of MOF-derived composites. Through the heat treatment, CuBDC-MeIM(rt) were converted to CuO/amorphous carbon with clear lattice fringes of 0.23 and 0.25 nm corresponding to the (111) and (002) crystal facets of CuO (JCPDS no.…”

Section: Resultsmentioning

confidence: 99%

Hierarchical N-Doped CuO/Cu Composites Derived from Dual-Ligand Metal–Organic Frameworks as Cost-Effective Catalysts for Low-Temperature CO Oxidation

et al. 2021

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Development of multi-ligand metal–organic frameworks (MOFs) and derived heteroatom-doped composites as efficient non-noble metal-based catalysts is highly desirable. However, rational design of these materials with controllable composition and structure remains a challenge. In this study, novel hierarchical N-doped CuO/Cu composites were synthesized by assembling dual-ligand MOFs via a solvent-induced coordination modulation/low-temperature pyrolysis method. Different from a homogeneous system, our heterogeneous nucleation strategy provided more flexible and cost-effective MOF production and offered efficient direction/shape-controlled synthesis, resulting in a faster reaction and more complete conversion. After pyrolysis, they further transformed to a unique metal/carbon matrix with regular morphology and, as a hot template, guided the orderly generation of metal oxides, eliminating sintering and agglomeration of metal oxides and initiating a synergistic effect between the N-doped metal oxide/metal and carbon matrix. The prepared N-doped CuO/Cu catalysts held unique water resistance and superior catalytic activity (100% CO conversion at 140 °C).

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“…[31] The results in Figure 3e show that the O 1s spectra of Zr-MOF and ZnZr-MOF-LDH can be fitted to two peaks centered at 529.88 and 531. 18…”

Section: Xps Analysesmentioning

confidence: 99%

“…UiO-66 has tanning metal particles and has the characteristics of high specific surface area, low crystal density, permanent porosity, uniform openness, and various topological structures. [18,19] It is worth noting that some metal defects such as Zr 4+ usually appear during the construction of MOF, which provides more possibilities for the reactivity of MOF. [20] It has shown great application prospects in the field of adsorption and separation.…”

Section: Introductionmentioning

confidence: 99%

A new type of multistage structure hydrotalcite material: To promote the absorption of chemicals in wet leather processing

Zhao

Gao

Lyu

et al. 2022

Applied Organom Chemis

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A novel ZnZr‐MOF‐LDH was designed and synthesized with Zr‐MOF as template, and subsequently, it was applied to leather tanning. Zr‐MOF and ZnZr‐MOF‐LDH were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT‐IR), X‐ray photoelectron spectroscopy (XPS), and nitrogen adsorption instrument. The results of SEM and TEM shown that when the mass ratio of Zr‐MOF to zinc nitrate was 1:2, the size of ZnZr‐MOF‐LDH was about 100 nm with surface has obvious convex polyhedral multilevel structure. The FT‐IR and XPS results showed that the ZnZr‐MOF‐LDH with good crystal structure was prepared. The Brunauer–Emmett–Teller (BET) results showed that the specific surface area and pore volume of ZnZr‐MOF‐LDH were higher than those of ZnZr‐LDH. The application results shown that compared with 2% chrome tanning agent tanning, the shrinkage temperature of leather treated by ZnZr‐MOF‐LDH combined with 2% chrome tanning agent tanning was increased from 73.1°C to 92.1°C and the thickening rate was increased from 38.71% to 56.98%. The subsequent wet processing was carried out which showed that adding ZnZr‐MOF‐LDH considered to be a good way to enhance the absorption rate of dyestuff and fatliquor, resulting in an ecological process and more economical. The absorption of chemicals during wet processing of leather improves the properties of green leather and reduces environmental pollution.

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Template-directed growth of hierarchically structured MOF-derived LDH cage hybrid arrays for supercapacitor electrode

Cited by 47 publications

References 32 publications

Engineering the Hierarchical Heterostructures of Zn–Ni–Co Nanoneedles Arrays@Co–Ni-LDH Nanosheets Core–Sheath Electrodes for a Hybrid Asymmetric Supercapacitor with High Energy Density and Excellent Cyclic Stability

Engineering the Hierarchical Heterostructures of Zn–Ni–Co Nanoneedles Arrays@Co–Ni-LDH Nanosheets Core–Sheath Electrodes for a Hybrid Asymmetric Supercapacitor with High Energy Density and Excellent Cyclic Stability

Hierarchical N-Doped CuO/Cu Composites Derived from Dual-Ligand Metal–Organic Frameworks as Cost-Effective Catalysts for Low-Temperature CO Oxidation

A new type of multistage structure hydrotalcite material: To promote the absorption of chemicals in wet leather processing

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