Two- and three-dimensional graphene-based hybrid composites for advanced energy storage and conversion devices

Azadmanjiri, Jalal; Srivastava, V. K.; Kumar, Parshant; Nikzad, Mostafa; Wang, James; Yu, Aimin

doi:10.1039/c7ta08748a

Cited by 133 publications

(51 citation statements)

References 379 publications

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“…[8] Numerous studies have been undertaken on in-situ techniques, such as microwave-assisted synthesis, [9] chemicalr eduction, [10][11][12] electrodeposition, [13] hydrothermal deposition, [14,15] electroless deposition, [16] and chemical bath deposition. [17] Although there is a vast number of studies reporting graphene/metal (oxide) composites, [18][19][20] ac omparison of different metals regarding the electrochemical performance of GO and rGO electrodes needs furtheri nvestigation for designingn ew composites. For that purpose, the synthesis methods hould be as simple as possible to understand the fundamental characteristics of the composites without the interference of foreignc ompounds, such as reducinga gents or crosslinkers.…”

Section: Introductionmentioning

confidence: 99%

First‐Row Transition‐Metal Cations (Co²⁺, Ni²⁺, Mn²⁺, Fe²⁺) and Graphene (Oxide) Composites: From Structural Properties to Electrochemical Applications

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Ünal

2019

Chemistry A European J

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Composites of graphene (oxide) (GO) and first-row transition-metal cations( Co 2 + ,N i 2 + ,M n 2 + ,F e 2 + )a re prepared by mixingG Oa nd aqueous metal salt solutions. The amount of metal cation bound to GO nanosheets is calculated by using inductively coupled plasma mass spectrometry (ICP-MS) andt he possible binding sites of the metalsa re investigated by meanso fa ttenuated total reflectance infrared (ATR-IR) spectroscopy and X-ray photoelectron spectroscopy (XPS) measurements. Electrodes loaded with the metal/GO composites are prepared by as imple drop-casting technique without any binderso rc onductive additives.T he effect of electrochemical reduction on the structure of the composite electrodes is investigated by Raman spectroscopy, XPS, X-ray diffraction (XRD) analysis, and field emission scanninge lectron microscopy (FESEM). Ad etailed electrochemical characterization is performed for the utilization of the composite electrodes for electrochemical capacitors and possible oxygen reduction reactione lectrocatalysts by cyclic voltammetry (CV) and rotatingd isk electrode measurements. The highest areal capacitance is achieved with the as-deposited Fe/GO composite (38.7 mF cm À2 at 20 mV s À1 ). In the cyclic stabilitym easurements, rCo/GO, rNi/GO, rMn/GO, and rFe/ GO exhibit ac apacitance retention of 44, 1.1, 73, and 87 % after 3000cycles of CV at 100 mV s À1 ,r espectively.[a] Dr.

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Section: Introductionmentioning

confidence: 99%

First‐Row Transition‐Metal Cations (Co²⁺, Ni²⁺, Mn²⁺, Fe²⁺) and Graphene (Oxide) Composites: From Structural Properties to Electrochemical Applications

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Yağcı

Ünal

2019

Chemistry A European J

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“…[122][123][124][125] To overcome critical challenges for commercialization, the development of high-performance electrode materials is a key toward fundamental advances in higher efficiency, better durability, and lower cost. [122][123][124][125] To overcome critical challenges for commercialization, the development of high-performance electrode materials is a key toward fundamental advances in higher efficiency, better durability, and lower cost.…”

Section: Electrochemical Energy Storage and Conversionmentioning

confidence: 99%

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

2019

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organic linkers with a periodic, nanoscaled structure and ultrahigh surface areas. With their tunable pore/cage sizes, flexible skeleton, and large surface-to-volume ratio, [13][14][15][16][17][18][19] MOFs have a large potential for a wide range of applications, including gas storage and separation, rechargeable batteries, supercapacitors, solar cells, nanoreactors, heterogeneous catalysis, or drug delivery. [20][21][22][23][24][25][26][27] Recently, significant efforts have been devoted to the design and synthesis of new MOFs structures and the investigation of their physical or chemical properties. MOFs are generally prepared as bulk form through traditional hydrothermal or solvothermal synthesis. [28][29][30][31] In order to expand the application range, suitable pathways for the structuring of MOF powders into a functional architecture or devices are highly desirable.Currently, intensive efforts are focusing on the structuring of MOFs at the mesoscopic/macroscopic scale for the use as coatings, membranes, or sophisticated architectures in specific devices and applications. [32][33][34][35] A major difference in the structuring of MOFs into complex shapes compared to inorganic microporous materials, such as zeolites or silica, is the fact that most inorganic binders cannot be used for MOFs as these binders usually require heat treatment. The intrinsic fragility of MOFs needs to be considered which is related to the inorganic/organic hybrid character of this class of materials and the resulting limited thermal and mechanical stability. Alternatively, a more effective way to structure MOFs is the combination with polymer materials. The polymer which acts as a binder improves the mechanical flexibility and ensures chemical stability. Numerous methods have been developed for structuring MOF-polymer compositions including hard or soft templates, spin-or dip-coating, spray-drying, printing, or lithography approaches. [36][37][38] The integration of MOFs into a polymer matrix can result in poor MOF-polymer dispersion and compatibility issues owing to the different physical and chemical properties for the two kinds of materials and this is a challenge in some applications, e.g., in MOF-based mixed matrix membranes for gas separation. [39][40][41][42] The poor interfacial compatibility would lead to agglomeration of MOF particles, causing the formation of nonselective voids between the MOFs particles and the polymer.Electrospinning is a fabrication method to produce continuous ultrafine fibers with diameters in the range of a few tens of nanometers to a few micrometers in the form of nonwoven mats, yarns, etc. The mechanism of electrospinning is based Herein, recent developments of metal-organic frameworks (MOFs) structured into nanofibers by electrospinning are summarized, including the fabrication, post-treatment via pyrolysis, properties, and use of the resulting MOF nanofiber architectures. The fabrication and post-treatment of the MOF nanofiber architectures are described systematically by two routes: i) the dire...

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“…Moreover, CNT and graphene fibers can be doped by nitrogen (N), boron (B), sulfur (S), or phosphorus (P), among which N is the most commonly doped heteroatom. Doping with nitrogen atom will introduce a new energy level into the low energy region of the sp 2 ‐bonded carbon atom conduction band, which benefits fast electron and ion transfer by decreasing the energy barrier leading to the improved catalytic activity and electrochemical performance . For instance, a microfluidic spinning method was applied.…”

Section: Fiber Designmentioning

confidence: 99%

A Route Toward Smart System Integration: From Fiber Design to Device Construction

et al. 2019

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Fiber is a symbol of human civilization, being ubiquitous but obscure in society over most of history. Fiber has been revived upon the advent of fiber‐based electronic devices in the past two decades. This is due to its desirable lightweight, flexible, and conformable characteristics, which enable it to play a fundamental role in the electronic and information era. Numerous fiber‐based electronic devices have sprung up in energy conversion, energy storage, sensing, actuation, etc. A possibility is thereby conceived that they can be integrated into smart systems compatible with the human body, consisting of biotic fiber‐based organs and tissues, which possess similar but more advanced functions. However, the design of mono‐/multifibers, the construction of fiber‐based devices, and the integration of these smart systems represent great challenges in fundamental understanding and practical implementation. A systematic review of the current state of the art with respect to the design and fabrication of electronic fiber materials, construction of fiber‐based devices, and integration of smart systems is presented. In addition, limitations of current fiber‐based devices and perspectives are explored toward potential and promising smart integration.

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Two- and three-dimensional graphene-based hybrid composites for advanced energy storage and conversion devices

Abstract: 2D and 3D graphene-based hybrid composites are the most promising materials for a broad range of high-efficiency energy storage and conversion devices.

Cited by 133 publications

References 379 publications

First‐Row Transition‐Metal Cations (Co²⁺, Ni²⁺, Mn²⁺, Fe²⁺) and Graphene (Oxide) Composites: From Structural Properties to Electrochemical Applications

First‐Row Transition‐Metal Cations (Co²⁺, Ni²⁺, Mn²⁺, Fe²⁺) and Graphene (Oxide) Composites: From Structural Properties to Electrochemical Applications

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

A Route Toward Smart System Integration: From Fiber Design to Device Construction

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Two- and three-dimensional graphene-based hybrid composites for advanced energy storage and conversion devices

Abstract: 2D and 3D graphene-based hybrid composites are the most promising materials for a broad range of high-efficiency energy storage and conversion devices.

Cited by 133 publications

References 379 publications

First‐Row Transition‐Metal Cations (Co2+, Ni2+, Mn2+, Fe2+) and Graphene (Oxide) Composites: From Structural Properties to Electrochemical Applications

First‐Row Transition‐Metal Cations (Co2+, Ni2+, Mn2+, Fe2+) and Graphene (Oxide) Composites: From Structural Properties to Electrochemical Applications

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

A Route Toward Smart System Integration: From Fiber Design to Device Construction

Contact Info

Product

Resources

About

First‐Row Transition‐Metal Cations (Co²⁺, Ni²⁺, Mn²⁺, Fe²⁺) and Graphene (Oxide) Composites: From Structural Properties to Electrochemical Applications

First‐Row Transition‐Metal Cations (Co²⁺, Ni²⁺, Mn²⁺, Fe²⁺) and Graphene (Oxide) Composites: From Structural Properties to Electrochemical Applications