Dandelion-like nickel/cobalt metal-organic framework based electrode materials for high performance supercapacitors

Gao, Shuwen; Sui, Yanwei; Wei, Fuxiang; Qi, Jiqiu; Meng, Qingkun; Ren, Yaojian; He, Yezeng

doi:10.1016/j.jcis.2018.07.044

Cited by 322 publications

(109 citation statements)

References 45 publications

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“…A group of peaks at 1596, 825, 761, and 679 cm –1 are assigned to the characteristic mode of aromatic ring . The two strong bands at 1541 and 1381 cm –1 are ascribed to the asymmetric and symmetric stretching modes of the coordinated carboxyl group from BPDC . All these confirm that BPDC ligands exist in the as‐synthesized NiCo‐MOF.…”

Section: Resultssupporting

confidence: 52%

“…Considered that both nickel ions and cobalt ions have a divalent state, adjacent atomic number and very close ionic radius, it is possible that nickel ions and cobalt ions simultaneously coordinate with a ligand to construct bimetallic MOFs crystals presenting a little lattice distortion. Moreover, some reports have confirmed that two different metal ions may coordinate with a ligand to form a homogeneous bimetallic MOFs rather than a mixture of two monometallic MOFs, and synthesizing bimetallic MOFs is becoming a new strategy for enhancing framework stability and properties . At present, only a few NiCo‐based MOFs have been reported as electrode materials presenting high electrochemical activity and energy storage capacity, in which terephthalic acid‐pyrazine, 2‐methylimidazole, 1,3,5‐benzenetricarboxylic acid, and benzenedicarboxylic acid (BDC) are used as ligands.…”

Section: Introductionmentioning

confidence: 99%

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Hydrangea‐like NiCo‐based Bimetal‐organic Frameworks, and their Pros and Cons as Supercapacitor Electrode Materials in Aqueous Electrolytes

Wang

Yang

et al. 2019

Zeitschrift anorg allge chemie

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Hydrangea-like NiCo-based bimetal-organic frameworks (NiCo-MOF) are synthesized in DMF-EtOH solution via a solvothermal method, using 4,4Ј-biphenyldicarboxylic acid as a ligand. NiCo-MOF having a highest capacity of 1056.6 F·g -1 at 0.5 A·g -1 and 457.7 F·g -1 even at 10 A·g -1 is achieved at a Ni/Co/BPDC molar ratio of 1:1:1, a temperature of 170°C and a reaction time of 12 hours. It exhibits secondary 3D microsphere structures assembled by primary 2D nanosheet structures, good crystalline structure and good thermal stability below 350°C in air. All the electrochemical data show that NiCo-MOF has the pros and cons as supercapacitor electrode materials in aqueous electrolytes. On the one hand, NiCo-MOF has a high capacity even at a high current density, low internal resistance, charge-

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Section: Resultssupporting

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Hydrangea‐like NiCo‐based Bimetal‐organic Frameworks, and their Pros and Cons as Supercapacitor Electrode Materials in Aqueous Electrolytes

Wang

Yang

et al. 2019

Zeitschrift anorg allge chemie

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“…FT-IR spectra of Ni-MOF, Co-MOF and Ni/Co-MOF, exhibits almost the same peak position except two extra peaks in spectra of Ni/Co-MOF. The broad bands at 3483 cm −1 and 2857 cm −1 , which are found only in Ni/Co-MOF are atrributed to the presence of hydroxyl groups and CH stretching vibration respectively [24]. Two strong bands at ∼1629 and ∼1286 cm −1 were assigned to the asymmetric and symmetric stretching modes of the coordinated (COO-) group respectively [28].…”

Section: Fourier Transform Infrared Spectroscopy (Ftir)mentioning

confidence: 94%

Electrochemical studies on Ni, Co & Ni/Co-MOFs for high-performance hybrid supercapacitors

Radhika¹,

Gopalakrishna²,

Chaitra³

et al. 2020

Mater. Res. Express

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Metal-organic framework (MOF) of Ni-MOF, Co-MOF, and Ni/Co-MOF were synthesized by a facile hydrothermal method using Trimesic acid as structure directing linker. The physico-chemical properties of the synthesized MOFs were characterized by P-XRD (powder X-ray diffraction), FT-IR (fourier transform infrared spectroscopy), SEM-EDS (scanning electron microscopy/energydispersive X-ray spectroscopy), HR-TEM (high-resolution transmission tlectron microscope) and BET (Brunner Emmett Teller) surface area techniques. The supercapacitance performance of these MOFs were studied by electroanalytical techniques such as cyclic voltammetry (CV), chronopotentiometry (CP) and electrochemical impedance spectroscopy (EIS). Amongst the MOFs investigated, Ni/Co-MOF exhibited highest specific capacitance (C s ) of 2041 F g −1 at a scan rate of 2 mV s −1 and 980 F g −1 at a current density of 2.5 A g −1 . Ni/Co-MOFs delivered a maximum energy density (ED) of 55.7 W h Kg −1 at a corresponding power density (PD) of 1 K W kg −1 and maximum PD of 9.8 K W kg −1 at an ED of 41.6 W h Kg −1 . An outstanding supercapacitance performance with superior columbic efficiency of 98.4% and capacitive retention of 73% after 5000 cycles marks this material as potential candidate for supercapacitors (SCs). A comparative electrochemical study of these MOFs were made in three electrode system, further electrochemical performance was corelated with their physico-chemical properties.

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“…Gao et. al [67] . developed dandelion‐like Ni/Co‐MOF structure that shows a specific capacitance of 758 F g −1 (@ 1 A g −1 ), a good rate capability (89 % retention @ 10 A g −1 ) and moderate cycling life (75 % retention after 5000 cycles @ 15 A g −1 ) within 0–0.48 V vs .…”

Section: Metal‐organic‐framework (Mofs)mentioning

confidence: 99%

Envisaging Future Energy Storage Materials for Supercapacitors: An Ensemble of Preliminary Attempts

et al. 2021

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Recent developments in supercapacitor technology in terms of materials and devices are reviewed herein. Beyond the conventional materials (i. e., carbonaceous matters, metallic compounds and conducting polymers), various multifunctional materials are reported in literature as future supercapacitive materials. A comprehensive account on such materials is lacking due to the diversified electrochemical characteristics of these materials. In this review, we bring all such non‐conventional multifunctional energy storage materials under a same umbrella for summarizing the recent advancements in supercapacitors. The envisaged multifunctional materials include metal‐organic‐frameworks (MOFs), covalent‐organic‐frameworks (COFs), heteroatom‐doped carbonaceous materials, biomass‐derived porous carbons, black phosphorous, mixed conductors, perovskite nanoparticles, polyoxometalates (POMs), redox active electrolytes, slurry materials for flow supercapacitors, thermal self‐charging materials, thermal self‐protective materials, piezoelectric materials and electrochromic materials. Inherent pros and cons of each class of material are discussed, and materials modifications towards the successful device fabrications are highlighted herewith. While the MOF‐based supercapacitors are drawing some attentions, other non‐conventional energy storage materials are truly in the nascent stage of developments. This review culminates with summary and proposed future directions for product developments. In brief, this article provides a holistic view regarding all non‐conventional multifunctional energy storage materials for future supercapacitor technology.

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Dandelion-like nickel/cobalt metal-organic framework based electrode materials for high performance supercapacitors

Cited by 322 publications

References 45 publications

Hydrangea‐like NiCo‐based Bimetal‐organic Frameworks, and their Pros and Cons as Supercapacitor Electrode Materials in Aqueous Electrolytes

Hydrangea‐like NiCo‐based Bimetal‐organic Frameworks, and their Pros and Cons as Supercapacitor Electrode Materials in Aqueous Electrolytes

Electrochemical studies on Ni, Co & Ni/Co-MOFs for high-performance hybrid supercapacitors

Envisaging Future Energy Storage Materials for Supercapacitors: An Ensemble of Preliminary Attempts

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