Electrochemical Evolution of Pore-Confined Metallic Molybdenum in a Metal–Organic Framework (MOF) for All-MOF-Based Pseudocapacitors

Li, Jun Hong; Chen, Yu Chuan; Wang, Yi Sen; Ho, Wei Huan; Gu, Yu; Chuang, Ching-Te; Song, Yi; Kung, Chung Wei

doi:10.1021/acsaem.0c00399

Cited by 42 publications

(27 citation statements)

References 75 publications

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“…For example, in our recently publisheds tudies, water-stable zirconium-based MOF (Zr-MOF)t hin films have been utilized to prepare pore-confined metallic cobalt or molybdenum that can exhibit enhanced electrochemical activities in aqueous solutions. [14] Polyaniline (PANI) is one of the most common conducting polymers that has been widely appliedf or ar ange of electrochemicala nd electronic applications. [15] Owingt oi ts high electrical conductivity in the presence of doped protons and its reversible redoxa ctivity,P ANI has been intensely utilized in electrochemical sensors, electrochromic devices,a nd supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

Selective Formation of Polyaniline Confined in the Nanopores of a Metal–Organic Framework for Supercapacitors

Song

Chen

et al. 2021

Chemistry A European J

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In this study, a strategy that can result in the polyaniline (PANI) solely confined within the nanopores of a metal–organic framework (MOF) without forming obvious bulk PANI between MOF crystals is developed. A water‐stable zirconium‐based MOF, UiO‐66‐NH2, is selected as the MOF material. The polymerization of aniline is initiated in the acidic suspension of UiO‐66‐NH2 nanocrystals in the presence of excess poly(sodium 4‐styrenesulfonate) (PSS). Since the pore size of UiO‐66‐NH2 is too small to enable the insertion of the bulky PSS, the quick formation of pore‐confined solid PANI and the slower formation of well dispersed PANI:PSS occur within the MOF crystals and in the bulk solution, respectively. By taking advantage of the resulting homogeneous PANI:PSS polymer solution, the bulk PANI:PSS can be removed from the PANI/UiO‐66‐NH2 solid by successive washing the sample with fresh acidic solutions through centrifugation. As this is the first time reporting the PANI solely confined in the pores of a MOF, as a demonstration, the obtained PANI/UiO‐66‐NH2 composite material is applied as the electrode material for supercapacitors. The PANI/UiO‐66‐NH2 thin films exhibit a pseudocapacitive electrochemical characteristic, and their resulting electrochemical activity and charge‐storage capacities are remarkably higher than those of the bulk PANI thin films.

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Section: Introductionmentioning

confidence: 99%

Selective Formation of Polyaniline Confined in the Nanopores of a Metal–Organic Framework for Supercapacitors

Song

Chen

et al. 2021

Chemistry A European J

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“…Similarly, the zirconium-based MOFs modified with molybdenum (Mo@MOF-808) and the manganese MOF composite (Mn-30CNT-UIO-66) show good redox performances, which were used as negative and positive materials for asymmetric SC. 96 The device showed a specific capacitance of 2.6 mF cm −2 at a current density of 0.1 mA cm −2 .…”

Section: Pristine Mofs For Scsmentioning

confidence: 94%

“…The electrochemical performance of Mn-modified MOF nanocomposites was better than that of the pristine Mn-modified MOF and nanocarbons, which is due to the high conductivity provided by the nanocarbons and the large number of redox-active Mn sites on the porous framework. Similarly, the zirconium-based MOFs modified with molybdenum (Mo@MOF-808) and the manganese MOF composite (Mn-30CNT-UIO-66) show good redox performances, which were used as negative and positive materials for asymmetric SC . The device showed a specific capacitance of 2.6 mF cm –2 at a current density of 0.1 mA cm –2 .…”

Section: Pristine Mofs For Scsmentioning

confidence: 99%

Review of Pristine Metal–Organic Frameworks for Supercapacitors: Recent Progress and Perspectives

Gao

Shen

et al. 2021

Energy Fuels

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Metal−organic frameworks (MOFs), also known as coordination polymers or coordination networks (self-assembled by multidentate organic ligands and metal ions/metal clusters), are multifunctional materials, which have been widely used in the fields of sensing, catalysis, ion exchange, adsorption/separation, or gas storage since their birth. At present, MOFs are a new type of energy storage and conversion material, which are considered as one of the most promising electrode candidates as a result of their large specific surface area, adjustable pores, open metal sites, and adjustable crystal structure. Although MOFs have the above advantages, the direct utilization of pristine MOFs as electrode materials is facing great challenges, which hinder their practical application. On the basis of this, in this review, we summarize the recent development of pristine MOFs as electrode materials for supercapacitors. On the basis of the research of these pristine MOFs, the synthesis process, energy storage performance, and structural design characteristics are summarized. Finally, we focus on the future development trend of pristine MOFs.

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“…In addition to metal ions, molybdenum (VI) nanoparticles have also been reported to be confined in the nanopores of a Zr‐MOF, offering an enhanced electrochemical behavior caused by more redox‐active sites. [ 63 ] The integration of MOFs with covalent organic frameworks (COFs) is a newly developed direction to achieve high performance in supercapacitors. The architecture involved in the all‐covalent nature renders COFs with higher thermal and chemical stability.…”

Section: Supercapacitor Applicationsmentioning

confidence: 99%

Metal–Organic Frameworks and Their Derived Functional Materials for Supercapacitor Electrode Application

Tian

2021

Adv Energy and Sustain Res

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Metal-organic frameworks (MOFs) are deemed an attractive type of active material during electrochemical reaction processes because of their unique compositional and structural superiority, as well as the dual role as both templates and precursors to derive a large variety of functional materials for energy conversation and storage. Herein, reviewing the recent advances of MOFs and their derived functional materials as electrode materials in supercapacitors, which are classified into pristine MOFs, MOF composites, and MOF-derived functional materials, is focused on. Their synthetic routes and modification strategies are summarized and the relationship between the diversity of the architectures and compositions of MOF-based materials and their electrochemical performance is discussed. In addition, the challenges and opportunities on future research and extensive applications of MOFs and their derived functional materials are offered.

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Electrochemical Evolution of Pore-Confined Metallic Molybdenum in a Metal–Organic Framework (MOF) for All-MOF-Based Pseudocapacitors

Cited by 42 publications

References 75 publications

Selective Formation of Polyaniline Confined in the Nanopores of a Metal–Organic Framework for Supercapacitors

Selective Formation of Polyaniline Confined in the Nanopores of a Metal–Organic Framework for Supercapacitors

Review of Pristine Metal–Organic Frameworks for Supercapacitors: Recent Progress and Perspectives

Metal–Organic Frameworks and Their Derived Functional Materials for Supercapacitor Electrode Application

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