Binary nickel–cobalt metal–organic frameworks as electrode for high performance pseudocapacitor

Xu, Chen; Yan, Feng; Mao, Zemin; Zhou, Yingjie; Liu, Li; Cheng, Wei-hao; Wang, Jinpei; Shi, Hao; Liu, Xiang

doi:10.1007/s10854-019-02313-w

Cited by 22 publications

(20 citation statements)

References 48 publications

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“…Comparison of the capacitive performance of our fabricated bimetal Ni,Zn-MOF/NF with those reported for single metal MOF electrode (i.e. Ni-MOF with Cs=334 mAh/g at 1 A/g, rate capability=49% and capacity retention=42.8 % after 2500 cycles at 10 A g -1 [37]) proved the better charge storage ability of the mixed Ni 2+ /Zn 2+ -based MOF electrode as a result of the synergetic effects within the fabricated MOF structure [38][39][40][41]. In fact, the incorporation or doping of zinc within Ni-MOF affects both the ionic and electronic conductivity, which results in better electrode utilization and the improvement of reaction kinetics, which is vital factor for any supercapacitor electrode material [42][43][44][45].…”

Section: Resultssupporting

confidence: 70%

“…For both fabricated electrodes (Fig. 7a during anodic scan which were reversed during cathodic potential sweep [37][38][39]. Additionally, it is seen that by increasing the scan rate, the speci c capacitances are decreased (Figs.…”

Section: Resultsmentioning

confidence: 89%

“…In fact, the wider potential window will cause an incredible enhancing the delivered energy densities. Compared with the Ni/Co-MOF (ΔV=0.45V [38]), Ni-MOF (ΔV=0.4 V [39]), Ni-MOF (ΔV=0.4V [44]), Zn/Co-MOF (ΔV=0.41V [43]), Zn/Ni-MOF (ΔV=0.5 V [44]), Ni/Zn-MOF ((ΔV=0.35 V [45]) and Ni/Zn-MOF ((ΔV=0.5V [46]) reported up now, the potential window of our fabricated Ni,Zn-MOF electrode (ΔV=0.6 V) was expanded, further indicating its better electrochemical performance as supercapacitor electrode. As seen in Table 1, the Ni,Zn-MOF electrode fabricated by our simple electrochemical method exhibits better speci c capacity, high-rate capability and capacity retention as compared with those reported for Ni-based bimetal MOF electrodes in literature [37][38][39][40][41][42][43][44][45][46], which can be related to its layered three-dimensional spatial petal-like structure (Figs.…”

Section: Resultsmentioning

confidence: 99%

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A novel electrochemical procedure for grown of bimetallic metal–organic framework (Ni/Zn-MOF) and its derived hydroxide@C onto Ni foam as binder-free high performance battery-type electrodes for supercapacitors

Song

Yang

2021

Preprint

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Todays, metal-organic frameworks (MOFs) and their derived structures have been extensively investigated as the novel electrode materials in energy storage area due to their stable porous architectures and exceptionally large specific surface area. In this study, bimetallic Ni,Zn-MOF is synthesized onto Ni foam via a novel indirect cathodic electrodeposition method for the first time. After that, the fabricated Ni,Zn-MOFs onto Ni foam was converted to corresponding bi-metal hydroxide@C/Ni foam through direct chemical treating with 6M KOH solution. The obtained Ni,Zn-MOFs/NF and Ni2 − xZnx (OH)2@C/NF electrodes are characterized through XRD, FT-IR, FE-SEM and EDS analyses. These analyses results confirmed deposition of well-defined crystalline porous sheet-like structures of Ni3 − xZnx(BTC)2 deposited onto Ni foam, where the hydroxide@C electrode was also exhibited similar morphology. As the binder-free electrode, the as-prepared Ni,Zn-MOF@Ni foam exhibited the superior storage capacities of 356.1 mAh g− 1 and 255.5 mAh g− 1 as well as good cycling stabilities of 94.2 % and 84.5 % after 6000 consecutive charge/discharge cycles at the current densities of 5 and 15 A g− 1, respectively. On the other hand, Ni,Zn-MOF derived hydroide@C/Ni foam presented the superior capacities of 545 mAh g− 1 and 406 mAh g− 1 as well as proper cycle lifes of 91.8 % and 78.3 % after 6000 cycling at the applied loads of 5 and 15 A g− 1, respectively. Based on these findings, both of these fabricated battery-type electrodes are introduced as the promising candidates for use in energy storage devices.

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Section: Resultssupporting

confidence: 70%

Section: Resultsmentioning

confidence: 89%

Section: Resultsmentioning

confidence: 99%

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A novel electrochemical procedure for grown of bimetallic metal–organic framework (Ni/Zn-MOF) and its derived hydroxide@C onto Ni foam as binder-free high performance battery-type electrodes for supercapacitors

Song

Yang

2021

Preprint

View full text Add to dashboard Cite

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“…In the last decade, heterometallic organic compounds (especially bimetallic MOFs) and their composites ( 211 ‐ 264 ), also have aroused an increasing attraction due to their unique SC performances 26,37,66,76,203‐222 . Owing to the tunable structures resulting from the mole ratios of different metal centers, the properties of bimetallic organic compounds could be adjusted and thus novel and special applications can be obtained on the basis of the monometallic organic compounds 57 .…”

Section: Bimetallic Metal‐organic Compounds and Their Compositesmentioning

confidence: 99%

“…Bimetallic‐organic compounds with SC properties are mainly the bimetallic MOFs with either polycarboxylate ligands ( 221 ‐ 245 , 260 ‐ 264 ) 26,37,66,203‐216,222 or 3‐methylimidazole ( 246 ‐ 256 ) 217‐220 ligands. As shown in Tables 13 and 14, cobalt, nickel and zinc are the most popular metal elements used to fabricate SC electrodes based on bimetallic‐organic compounds.…”

Section: Bimetallic Metal‐organic Compounds and Their Compositesmentioning

confidence: 99%

Supercapacitor electrodes based on metal‐organic compounds from the first transition metal series

Chen

Xie

et al. 2021

EcoMat

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Metal‐organic compounds, including molecular complexes and coordination polymers, have attracted much attention as electrode materials in supercapacitors owing to their large surface area, high porosity, tailorable pore size, controllable structure, good electrochemical reversibility, and abundant active sites. Among the variety of metal‐organic compounds exhibiting desired supercapacitor performances (high specific capacitance, long cycling life, high energy density, and power density), those with metals in the first transition metal series are the most studied due to their rich covalent states, light atom weight, environmental‐friendliness, non‐toxicity, and low cost. In this review, the recent reports on the metal‐organic compounds of the first transition metal series as electrode materials in supercapacitors are summarized and their electrode and device performances are discussed in terms of different metal elements and typical multidentate ligands. Moreover, the current challenges, design strategies, future opportunities and further research directions are also highlighted for metal‐organic compounds in the field of supercapacitors.

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An Efficient and Stable Electrocatalyst Derived from Ni−Mo−Co MOF for Methanol Oxidation Reaction

2023

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The majority of methanol oxidation electrocatalysts are based on platinum-group metals such as platinum, palladium, and ruthenium. However, their usage is restricted because of their high cost, scarcity, and carbon monoxide toxicity concerns. We devised a simple approach for preparing a nickel foam (NF) based electrode using in-situ synthesis of metal organic framework, such as Co-MOF/NF, Ni-MOF/NF, Mo-MOF/NF, NC-MOF/ NF, MC-MOF/NF, NM-MOF/NF, and NMC-MOF/NF, as an efficient electrocatalyst for methanol oxidation to produce carbon dioxide and water. Catalysts were synthesized using a hydrothermal process. In methanol with alkaline electrolyte, the as-prepared NMC-MOF/NF catalysts had the highest current density response, such as 5641 mA/cm 2 , in contrast to other bimetallic and single metal-based metal organic framework electrocatalysts supported on Ni foam. We also observed that the NMC-MOF/NF could efficiently catalyze the oxidation of carbon monoxide while being relatively unaffected by it. After 20,000 seconds in methanol oxidation, NMC-MOF/NF based electrode retained about 100 % of its initial activity. Following simple synthesis technique and the improved catalytic efficiency and stability of NMC-MOF/NF, methanol can be used to generate energy-efficient products such as hydrogen.

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Binary nickel–cobalt metal–organic frameworks as electrode for high performance pseudocapacitor

Cited by 22 publications

References 48 publications

A novel electrochemical procedure for grown of bimetallic metal–organic framework (Ni/Zn-MOF) and its derived hydroxide@C onto Ni foam as binder-free high performance battery-type electrodes for supercapacitors

A novel electrochemical procedure for grown of bimetallic metal–organic framework (Ni/Zn-MOF) and its derived hydroxide@C onto Ni foam as binder-free high performance battery-type electrodes for supercapacitors

Supercapacitor electrodes based on metal‐organic compounds from the first transition metal series

An Efficient and Stable Electrocatalyst Derived from Ni−Mo−Co MOF for Methanol Oxidation Reaction

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