On/off switchable electronic conduction in intercalated metal-organic frameworks

Ogihara, Nobuhiro; Ohba, Nobuko; Kishida, Yoshihiro

doi:10.1126/sciadv.1603103

Cited by 62 publications

(80 citation statements)

References 61 publications

(108 reference statements)

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“…The raising of the voltage plateau from the first discharge process to the subsequent discharge processes of Li 2 NDC is associated with the decrease in IV resistance after the initial Li intercalation. Compared with the Li compound,f or which am ixed electronic and ionic conductivity mechanism is highlighted, [40] one cannotc learly indicate if the nature of the sodium intercalation mechanism is comparable. Figure6as hows the EIS Nyquist plots of the cell as-prepared (at open circuit voltage, OCV), at the end of the first discharge and after first and second charge.…”

Section: Electrochemical Characterisationmentioning

confidence: 99%

“…[13] To investigate the phenomenon, electrochemical impedance spectroscopy (EIS) was carried out at variouss tates of charge. Further investigations in at hree-electrode cell, as well as pellet measurementsa td ifferent temperatures, will help to unravel the Na insertion mechanism and the activation energy.I ti s nonetheless possible to considert hat among the three-electron conduction hopping paths demonstrated for the Li compound, [40] Na 2 NDC would showa tl east two similarh opping paths because the p-stacking of the aromatic cycles is oriented in as imilar way to Li 2 NDC and the basal packing of sodium layers is ensured. Bode plots can be found in FigureS7( in the SupportingI nformation).…”

Section: Electrochemical Characterisationmentioning

confidence: 99%

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Sodium Naphthalene‐2,6‐dicarboxylate: An Anode for Sodium Batteries

et al. 2019

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The conjugated dicarboxylate sodium naphthalene‐2,6‐dicarboxylate (Na2NDC) was prepared by a low‐energy‐consumption reflux method, and its performance as a negative electrode for sodium‐ion batteries was evaluated in electrochemical cells. The structure of Na2NDC was solved for the first time (monoclinic P21/c) from powder XRD data and consists of π‐stacked naphthalene units separated by sodium–oxygen layers. Through an appropriate choice of binder and conducting carbon additive, Na2NDC exhibited a reversible two electron sodium insertion at approximately 0.4 V (vs. Na+/Na) with remarkably stable capacities of approximately 200 mAh g−1 at a rate of C/2 and good rate capability (≈133 mAh g−1 at 5 C). In parallel, the high thermal stability of the material was demonstrated by high‐temperature XRD: the framework remained intact to above 500 °C.

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Section: Electrochemical Characterisationmentioning

confidence: 99%

Section: Electrochemical Characterisationmentioning

confidence: 99%

Sodium Naphthalene‐2,6‐dicarboxylate: An Anode for Sodium Batteries

et al. 2019

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“…Nevertheless, Ogihara et al. reported a MOF with switchable electronic conduction whose switching behavior is controlled through reversible Li intercalation (Figure ) . The introduction of these lithium species provides an additional electron hopping pathway while maintaining structural integrity, thermal stability, and ionic conductivity.…”

Section: Mof Switching With Redoxmentioning

confidence: 99%

“… Insertion of switchable guest molecules into the MOF′s pores; Functionalization of side groups on the linkers; Direct incorporation of switching ligands as the MOF backbone …”

Section: Introductionmentioning

confidence: 99%

Switching in Metal–Organic Frameworks

et al. 2019

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In recent years, metal–organic frameworks (MOFs) have become an area of intense research interest because of their adjustable pores and nearly limitless structural diversity deriving from the design of different organic linkers and metal structural building units (SBUs). Among the recent great challenges for scientists include switchable MOFs and their corresponding applications. Switchable MOFs are a type of smart material that undergo distinct, reversible, chemical changes in their structure upon exposure to external stimuli, yielding interesting technological applicability. Although the process of switching shares similarities with flexibility, very limited studies have been devoted specifically to switching, while a fairly large amount of research and a number of Reviews have covered flexibility in MOFs. This Review focuses on the properties and general design of switchable MOFs. The switching activity has been delineated based on the cause of the switching: light, spin crossover (SCO), redox, temperature, and wettability.

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“… Insertion eines schaltbaren Gastmoleküls in die MOF‐Poren Funktionalisierung von Seitengruppen an den Linkern direkter Einbau von schaltbaren Liganden als MOF‐Grundgerüst …”

Section: Introductionunclassified

Schalten in Metall‐organischen Gerüsten

et al. 2019

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Aufgrund ihrer einstellbaren Poren und nahezu grenzenlosen Strukturdiversität, die sich aus dem Design verschiedener organischer Linker und metallischer Strukturbaueinheiten ableitet, haben sich Metall‐organische Gerüste (MOFs) in den vergangenen Jahren zu einem intensiv beforschten Gebiet entwickelt. Zu den größten Aufgaben gehören schaltbare MOFs und ihre Anwendung. Schaltbare MOFs sind “intelligente” Materialien, die bei Exposition gegenüber externen Stimuli eine deutliche, reversible, chemische Veränderung ihrer Struktur durchlaufen, was interessante technische Anwendungen ermöglicht. Obwohl dieser Prozess des Schaltens Ähnlichkeiten mit Flexibilität aufweist, haben sich nur sehr wenige Studien speziell mit Schalten beschäftigt, wohingegen sich eine recht große Zahl von Arbeiten und Übersichten mit der Flexibilität in MOFs beschäftigt. Dieser Aufsatz konzentriert sich auf die Eigenschaften und das allgemeine Design schaltbarer MOFs. Dabei wird die Schaltaktivität basierend auf der Ursache des Schaltens beschrieben: Licht, Spincrossover, Redoxchemie, Temperatur und Benetzbarkeit.

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On/off switchable electronic conduction in intercalated metal-organic frameworks

Abstract: On/off switchable electronic conduction occurs in intercalated metal-organic framework formed by chemical lithiation and heating.

Cited by 62 publications

References 61 publications

Sodium Naphthalene‐2,6‐dicarboxylate: An Anode for Sodium Batteries

Sodium Naphthalene‐2,6‐dicarboxylate: An Anode for Sodium Batteries

Switching in Metal–Organic Frameworks

Schalten in Metall‐organischen Gerüsten

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