Highly Electroconductive Metal–Organic Framework: Tunable by Metal Ion Sorption Quantity

Rouhani, Farzaneh; Rafizadeh-Masuleh, Fatemeh; Morsali, Ali

doi:10.1021/jacs.9b04173

Cited by 86 publications

(61 citation statements)

References 51 publications

(69 reference statements)

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“…The equivalent circuit mainly includes the elements: the equivalent series resistance (R s ), charge-transfer resistance (R ct ), the constant phase angle element (CPE), and Warburg resistance (W). [43] In the highfrequency region, the intercept value on the x-coordinate corresponds to the solution resistance R s , and the diameter of the semicircle corresponds to the reaction resistance R ct of faradaic reactions and EDLC. Among them, Co-Ni-B-S shows a little resistance, which is concordant for its excellent electrochemical performance ( Figure S14a, Supporting Information).…”

Section: Doi: 101002/adma201905744mentioning

confidence: 99%

“…The EIS spectrum is composed of a semicircle part in the high‐frequency region and a linear component in the low‐frequency region. The equivalent circuit mainly includes the elements: the equivalent series resistance ( R s ), charge‐transfer resistance ( R ct ), the constant phase angle element (CPE), and Warburg resistance ( W ) . In the high‐frequency region, the intercept value on the x ‐coordinate corresponds to the solution resistance R s , and the diameter of the semicircle corresponds to the reaction resistance R ct of faradaic reactions and EDLC.…”

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confidence: 99%

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Redox Tuning in Crystalline and Electronic Structure of Bimetal–Organic Frameworks Derived Cobalt/Nickel Boride/Sulfide for Boosted Faradaic Capacitance

et al. 2019

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The development of efficient electrode materials is a cutting‐edge approach for high‐performance energy storage devices. Herein, an effective chemical redox approach is reported for tuning the crystalline and electronic structures of bimetallic cobalt/nickel–organic frameworks (Co‐Ni MOFs) to boost faradaic redox reaction for high energy density. The as‐obtained cobalt/nickel boride/sulfide exhibits a high specific capacitance (1281 F g−1 at 1 A g−1), remarkable rate performance (802.9 F g−1 at 20 A g−1), and outstanding cycling stability (92.1% retention after 10 000 cycles). An energy storage device fabricated with a cobalt/nickel boride/sulfide electrode exhibits a high energy density of 50.0 Wh kg−1 at a power density of 857.7 W kg−1, and capacity retention of 87.7% (up to 5000 cycles at 12 A g−1). Such an effective redox approach realizes the systematic electronic tuning that activates the fast faradaic reactions of the metal species in cobalt/nickel boride/sulfide which may shed substantial light on inspiring MOFs and their derivatives for energy storage devices.

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Section: Doi: 101002/adma201905744mentioning

confidence: 99%

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confidence: 99%

Redox Tuning in Crystalline and Electronic Structure of Bimetal–Organic Frameworks Derived Cobalt/Nickel Boride/Sulfide for Boosted Faradaic Capacitance

et al. 2019

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“…Recently, Rouhani et al provided a simple but innovative strategy to tune the conductivity of MOFs ( Figure ). [ 153 ] They found that in situ amine functionalized TMU‐60 [Zn(OBA)(L*)·DMF] could largely improve its conductivity owing to the sorption of cadmium ion. In addition, the conductivity could also be adjusted by controlling the amount of absorbed metal ions.…”

Section: The Design and Synthesis Of Conductive Mofsmentioning

confidence: 99%

Conductive Metal–Organic Frameworks: Design, Synthesis, and Applications

et al. 2020

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fabricated. Combined with controlled synthesis, MOF materials are endowed with abundant various of structures, morphologies, and properties. [8-11] In addition, the as-prepared MOFs can be artificially modified via postsynthetic approaches utilizing their available pores and active sites of metal clusters or linkers. [12,13] As a result, not only the number of MOFs is further increased but also many interesting properties, such as high specific surface areas, tailorable pore sizes, modifiable structures, and properties are endowed with MOFs, which make them become potential candidates in storage/separation, catalysis, sensing, etc. [14,15] Another important application of MOFs is that they can act as conductive materials for electrocatalysis, sensing, and energy conversion, etc. [16-19] The existence of quantitative amounts of active metal centers, permanent porosity, and structural rigidity can facilitate surface contact and mass transfer as well as increase catalysis stability, making MOFs as ideal electrocatalysts. [20-22] In addition, they possess high specific surface areas, tunable bandgaps, and good charge transport properties, which extend their applications in sensing and energy storage. [23] Besides, the morphologies and characteristics of MOFs can be artificially modified to form 1D, 2D, or 3D structures via liquid phase selfassembly, physical/chemical exfoliation, layer-by-layer assembly, etc., promoting their applications in electrochemical devices and electronics. [24-26] With further structural design through postsynthesized modification, the performances of MOFs can be largely improved, facilitating their applications as conductive materials. [27-29] However, most MOFs are intrinsically electrically insulated, which seriously hinders their electrochemical applications. [29] The connected rigid metal ions and redox-inactive organic ligands increase the energy barrier for electron transfer, making them as electrical insulators. To overcome the drawbacks of MOFs, many feasible strategies have been adopted to promote the electron transfer in the structures of MOFs. [27,30-32] The high electrical conductivity of MOFs can be realized by integrating the conjugated planes or 1D chains in the structures, which relies on particular structural designs. [33-37] The conductivity of the MOFs can also be increased via doping with guest Metal-organic frameworks (MOFs) have aroused worldwide interest over the last two decades due to their various excellent properties, such as porosity, modifiability, stability, etc. Based on these unique features, they have been widely exploited for applications from electrocatalysis to electrochemical devices. However, most MOFs are inherently insulated due to the lack of free charge carriers and low-energy barriers for charge transfer, which largely restricts their further electrochemical applications. By imparting MOFs with electrical conductivity, their electrochemical process and catalysis efficiency can be effectively improved. Similarly, their applications in sensors, secon...

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“…Metal-organic frameworks (MOFs) are crystalline solids composed of metal ions coordinated by multifunctional organic molecules with a three-dimensional porous structure. The composition and structure of MOFs could be easily adjusted via the rational selection of the metal ion and organic molecule (Rouhani et al, 2019). Furthermore, they feature poor electrical conductivity and well-defined porous structure, allowing for fast ion diffusion (Zhu et al, 2019).…”

Section: Metal-organic Framework (Mofs) Mg Ion Solid Conductorsmentioning

confidence: 99%

Recent Development of Mg Ion Solid Electrolyte

et al. 2020

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Although the successful deployment of lithium-ion batteries (LIBs) in various fields such as consumer electronics, electric vehicles and electric grid, the efforts are still ongoing to pursue the next-generation battery systems with higher energy densities. Interest has been increasing in the batteries relying on the multivalent-ions such as Mg 2+ , Zn 2+ , and Al 3+ , because of the higher volumetric energy densities than those of monovalent-ion batteries including LIBs and Na-ion batteries. Among them, magnesium batteries have attracted much attention due to the promising characteristics of Mg anode: a low redox potential (−2.356 V vs. SHE), a high volumetric energy density (3,833 mAh cm −3), atmospheric stability and the earth-abundance. However, the development of Mg batteries has progressed little since the first Mg-ion rechargeable battery was reported in 2000. A severe technological bottleneck concerns the organic electrolytes, which have limited compatibility with Mg anode and form an Mg-ion insulating passivation layer on the anode surface. Consequently, beneficial to the good chemical and mechanical stability, Mg-ion solid electrolyte should be a promising alternative to the liquid electrolyte. Herein, a mini review is presented to focus on the recent development of Mg-ion solid conductor. The performances and the limitations were also discussed in the review. We hope that the mini review could provide a quick grasp of the challenges in the area and inspire researchers to develop applicable solid electrolyte candidates for Mg batteries.

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Highly Electroconductive Metal–Organic Framework: Tunable by Metal Ion Sorption Quantity

Cited by 86 publications

References 51 publications

Redox Tuning in Crystalline and Electronic Structure of Bimetal–Organic Frameworks Derived Cobalt/Nickel Boride/Sulfide for Boosted Faradaic Capacitance

Redox Tuning in Crystalline and Electronic Structure of Bimetal–Organic Frameworks Derived Cobalt/Nickel Boride/Sulfide for Boosted Faradaic Capacitance

Conductive Metal–Organic Frameworks: Design, Synthesis, and Applications

Recent Development of Mg Ion Solid Electrolyte

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