Recent progress in metal-organic framework-based supercapacitor electrode materials

Xu, Ben Bin; Zhang, Haobing; Mei, Hao; Sun, Daofeng

doi:10.1016/j.ccr.2020.213438

Cited by 352 publications

(147 citation statements)

References 162 publications

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“…where ΔV is the potential variation during the discharge, I is the applied discharge current and Δt is the discharge time. 54 The specific capacitances (C SP ) were calculated using Equation (2). Figure 6C shows the as-calculated C SP plotted as a function of the applied specific current.…”

Section: Gcd Analysismentioning

confidence: 99%

“…Nowadays, the crescent demand for electrochemical energy storage devices has drawn the attention of many researchers worldwide. 1,2 This is a reflection of the fast growth of the consumer electronics market, which requires new and advanced energy storage solutions. 3,4 Supercapacitors stands-out from other energy storage devices due to their capability to release a great amount of energy very quickly.…”

Section: Introductionmentioning

confidence: 99%

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High‐performance symmetric supercapacitor based on molybdenum disulfide/poly(3,4‐ethylenedioxythiophene)‐poly(styrenesulfonate) composite electrodes deposited by spray‐coating

2021

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Here we present the study of supercapacitors based on molybdenum disulfide and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (MoS 2 /PEDOT: PSS) composite electrodes deposited by spray-coating. To produce the MoS 2 / PEDOT:PSS composite ink, dispersions of hydrothermally synthesized MoS 2 and PEDOT:PSS were mixed in different weight proportions. Electrodes containing only PEDOT:PSS and MoS 2 were also fabricated for comparison. The composite films were deposited by transferring the as-prepared inks to an airbrush coupled to a modified 3D printer base with in-line displacement. The films were characterized in terms of the scanning electron microscope (SEM), Raman spectroscopy, and sheet resistance. The electrochemical properties of supercapacitors were evaluated by cyclic voltammetry (CV), galvanostatic charge/discharges (GCD) techniques, impedance spectroscopy (IS), and their correlated parameters. The maximum specific capacitance of the MoS 2 -basedsupercapacitor was estimated to be 145.9 F g −1 at 1 mV s −1 , while the 3:1 MoS 2 /PEDOT:PSS weight ratio supercapacitor exhibited a specific capacitance of 131.1 F g −1 . Despite the slightly lower C SP , the 3:1 device provided a better overall performance, with a remarkably higher energy density of 11.2 Wh kg −1 and a maximum power density of 1020 W kg −1 . It also displayed better longterm cycle stability, retaining 92% of its initial capacitance after 1000 CV cycles (against 54% of MoS 2 devices). In summary, we demonstrated the study and production of a high-performance supercapacitor with spray-deposited MoS 2 / PEDOT:PSS composite electrodes, in which the production can be easily scalable for mass production and practical applications.

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Section: Gcd Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High‐performance symmetric supercapacitor based on molybdenum disulfide/poly(3,4‐ethylenedioxythiophene)‐poly(styrenesulfonate) composite electrodes deposited by spray‐coating

2021

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“…[14][15] Using metal-organic frameworks (MOFs) as superior precursors to controllably fabricate TM@HCM nanomaterials could partially achieve the above-mentioned goals. [16][17][18][19] Compared with bulk MOF, the thinner Page 2 of 34 CCS Chemistry 3 the MOF is, the more easily to expose the active sites and enhance the catalytic activity. [20][21][22][23] For example, Li et al have selected a thick layered MOF (~30 nm) as template to construct Co 3 O 4 /C BDC nanosheet arrays and used as OER electrocatalyst.…”

Section: Introductionmentioning

confidence: 99%

Ultrathin Metal–Organic Framework Nanosheets-Derived Yolk–Shell Ni _0.85 Se@NC with Rich Se-Vacancies for Enhanced Water Electrolysis

et al. 2021

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Selecting ultrathin MOF nanosheets as pre-assembling platforms, yolk-shell structured few-layer N-doped carbon (NC) shell encapsulated Ni 0.85 Se core (denoted as Ni 0.85 Se@NC) via an oriented phase modulation (OPM) strategy are controllably fabricated. The ultrathin nature of MOF nanosheets give rise to the modification of structure at the electronic level with abundant Se-vacancies and effective electronic coupling via the Ni-N x coordination at the interface between the Ni 0.85 Se core and NC shell. The obtained Ni 0.85 Se@NC exhibits low overpotentials for both oxygen evolution reaction (OER) (300 mV) and hydrogen evolution reaction (HER) (157 mV) at 10 mA•cm-2 in alkaline condition, outperforming the corresponding bulk MOFderived counterparts. Through exploiting Ni 0.85 Se@NC as anode and cathode catalysts, a low cell voltage of 1.61 V is achieved to perform alkaline water electrolysis. Remarkably, it also achieves high activity in natural seawater (pH = 7.98) and simulated seawater (pH = 7.86) electrolytes, even surpassing integrated Pt/C-RuO 2 /CC electrodes. Density functional theory (DFT) studies illustrate that abundant Se-vacancies effectively regulate the electronic structure of Ni 0.85 Se@NC by accelerating electron transfer from Ni to N atoms at the interface, and thus make the Ni 0.85 Se@NC a near-optimal electronic configuration to stimulate ideal adsorption free energy toward key reaction intermediates.

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“…[16][17] However, it is well known that low conductivity and limited ion transport are the main reasons that thwart the widespread use of MOFs and their derivatives in electrochemistry. [18][19][20] Researchers have done a lot to improve these problems. Chen et al first proposed polystyrene spheres (PSs) as templates to construct three-dimensional ordered macroporous structures, which effectively increased the specific surface area of ZIF-8.…”

Section: Introductionmentioning

confidence: 99%

A Hierarchically Porous ZIF@LDH Core‐Shell Structure for High‐Performance Supercapacitors

Zhao

Duan

Pang

et al. 2021

Chemistry An Asian Journal

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Designing nanocomposites with good electrochemical properties is one of the challenges in constructing supercapacitors. Adjustable metal-organic frameworks (MOFs) have potential research value in improving charge storage and transfer due to their multi-porosity. Moreover, MOFs can serve as a precursor to various derivatives. Herein, a series of core-shell structures with macro-microporous ZIF-67 (M-ZIF-67) as the core and layered double hydroxide (LDH) as the shell were synthesized based on polystyrene spheres (PSs) template via a simple ion etching method. As a result, the sample of M-ZIF-67@LDH4 shows a specific capacitance of 597.6 F g À 1 at 0.5 A g À 1 and a high rate retention of 92% at 3 A g À 1 .

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Recent progress in metal-organic framework-based supercapacitor electrode materials

Cited by 352 publications

References 162 publications

High‐performance symmetric supercapacitor based on molybdenum disulfide/poly(3,4‐ethylenedioxythiophene)‐poly(styrenesulfonate) composite electrodes deposited by spray‐coating

High‐performance symmetric supercapacitor based on molybdenum disulfide/poly(3,4‐ethylenedioxythiophene)‐poly(styrenesulfonate) composite electrodes deposited by spray‐coating

Ultrathin Metal–Organic Framework Nanosheets-Derived Yolk–Shell Ni _0.85 Se@NC with Rich Se-Vacancies for Enhanced Water Electrolysis

A Hierarchically Porous ZIF@LDH Core‐Shell Structure for High‐Performance Supercapacitors

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Recent progress in metal-organic framework-based supercapacitor electrode materials

Cited by 352 publications

References 162 publications

High‐performance symmetric supercapacitor based on molybdenum disulfide/poly(3,4‐ethylenedioxythiophene)‐poly(styrenesulfonate) composite electrodes deposited by spray‐coating

High‐performance symmetric supercapacitor based on molybdenum disulfide/poly(3,4‐ethylenedioxythiophene)‐poly(styrenesulfonate) composite electrodes deposited by spray‐coating

Ultrathin Metal–Organic Framework Nanosheets-Derived Yolk–Shell Ni 0.85 Se@NC with Rich Se-Vacancies for Enhanced Water Electrolysis

A Hierarchically Porous ZIF@LDH Core‐Shell Structure for High‐Performance Supercapacitors

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Ultrathin Metal–Organic Framework Nanosheets-Derived Yolk–Shell Ni _0.85 Se@NC with Rich Se-Vacancies for Enhanced Water Electrolysis