Spontaneous three-dimensional self-assembly of MXene and graphene for impressive energy and rate performance pseudocapacitors

Sikdar, Anirban; Dutta, Pronoy; Deb, Sankha; Majumdar, Abhisek; Nimmakayala, Padma; Ghosh, Subhradip; Maiti, Uday Narayan

doi:10.1016/j.electacta.2021.138959

Cited by 46 publications

(22 citation statements)

References 60 publications

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“…As an ESD, the size of its energy storage is the size of its capacitance 19,192–195 Electric double‐layer capacitors (EDLCs)The energy storage principle of a double‐layer capacitor is simply that the energy is stored through the double layer formed at the interface between the electrode and the electrolyte, using the high specific surface area of the electrode material 138,139 . The detailed explanation is that when the electrode is charged, under the action of intermolecular forces, a stable double layer of charges of opposite sign will appear on the contact surface of the electrode and the electrolyte, 123,140,141 and because there are barriers at the interface, the double layer of charges will not be neutralized, thus forming a tight double layer on the surface of the electrode, called the interface double layer 142 .…”

Section: Advantages and Principles Of Supercapacitorsmentioning

confidence: 99%

“…For example, in the field of energy storage, 40,76,[130][131][132][133][134][135][136] Zhang et al 137 used C-MoS 2 /CNTs-Ti 3 C 2 composite negative electrodes to achieve excellent performance sodium-ion batteries. Sikdar et al 138 proposed a pure room temperature casting-based method with zinc particles to induce MXene and graphene 3D self-assembly for highperformance pseudocapacitors. Wu et al 139 used a facile strategy of multiscale structural engineering to fabricate high-performance MXene hydrogel supercapacitor electrodes.…”

Section: Other Propertiesmentioning

confidence: 99%

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Recent progress in MXene layers materials for supercapacitors: High‐performance electrodes

Wang

2022

SmartMat

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In 2011, Gogotsi et al. discovered a new type of two‐dimensional transition metal carbides and nitrides, called MXenes, which have become a dazzling new star in the energy storage industry. MXenes are endowed with a series of fascinating properties due to their unique structures and tunable surface chemical functional groups. The application of MXenes in electrochemical energy storage has attracted special attention, especially showing great potential in supercapacitor applications. Compared with other materials, MXenes have high mechanical flexibility, high energy density, and good electrochemical performance, so they are especially suitable as electrode materials for supercapacitors. However, similar to other 2D materials, due to the strong van der Waals forces, MXene layers inevitably undergo stacking agglomeration, resulting in severe loss of electrochemically active sites. If the self‐stacking of MXenes layers can be effectively suppressed, their electrochemical performance will be enhanced. Structural optimization of MXenes and composite doping of MXenes with other materials are two strategies with significant effects. This review summarizes recent advances in MXene synthesis, fundamental properties, and composite materials, focusing on the latest electrochemical performance of MXene‐based electrodes/devices, and puts forward the challenges and new opportunities that MXenes face in this emerging energy storage field.

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Section: Advantages and Principles Of Supercapacitorsmentioning

confidence: 99%

Section: Other Propertiesmentioning

confidence: 99%

Recent progress in MXene layers materials for supercapacitors: High‐performance electrodes

Wang

2022

SmartMat

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“…Supercapacitors can be classified into three main categories: i) electrochemical double‐layer capacitors (EDLCs), [ 80,105,204 ] ii) pseudocapacitors, [ 205 ] and iii) asymmetric supercapacitors. [ 122c,206 ] Compared to pseudocapacitors and asymmetric capacitors, EDLCs have the advantage of a separator‐free structure, as the electrode/electrolyte interface is the charge storage area in these capacitors (no Faradaic process occurs).…”

Section: Energy Storage Applications Of Polymer Hydrogelsmentioning

confidence: 99%

Flexible Polymer Hydrogels for Wearable Energy Storage Applications

Mahdavian,

Allahbakhsh,

Bahramian

et al. 2023

Adv Materials Technologies

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The recent and fast‐growing trends related to the development of wearable technologies have raised the need for efficient and high‐performance energy storage devices having extra features such as flexibility and lightweight. Polymer hydrogels, as viscoelastic lightweight porous nanostructures with tunable surface and structural properties, can play a crucial role in the design of these future energy storage devices. Herein, recent developments and progress in the use of polymer hydrogels to design flexible and wearable energy storage devices are presented and discussed. The 3D structure of polymer hydrogels and porous nanostructures based on these hydrogels provides a platform to design flexible supercapacitors, batteries, and personal thermal management devices. Herein, different types of polymer hydrogels are presented, and their main fabrication techniques are reported. Moreover, the main structural properties affecting the energy storage performance of polymer hydrogels are discussed. In addition to recent progress in the design of polymer‐hydrogel‐based wearable devices, recent developments in polymer hydrogels for flexible applications (batteries, supercapacitors, and thermal energy storage systems) are reviewed in detail.

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“…The performance of electrode active material affects the electrochemical properties of a supercapacitor, and the electrodes of supercapacitors are usually made of nanomaterials with high surface area and high porosity, among which, a two-dimensional nanomaterial MXene has a great theoretical capacity, but the materials of current electrode prepared by MXene all show poor capacity, multiple performances, and cycle stability [8] . The assembly design of a porous structure can effectively promote the migration of ions and fully expose the active site to further improve its electrochemical performance [9,10] .…”

Section: Supercapacitormentioning

confidence: 99%

Constructions and applications of MXene-based porous films

Jiang,

Lu,

Xin

et al. 2023

J. Phys.: Conf. Ser.

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MXene-based films (MBFs) have a graphic structure composed of a horizontal arrangement of MXene thin tablets and/or layer interval parts. It usually has high electrode density, but high-rate charge transfer is limited, and ions are transmitted to oxidize the activity site. To overcome these problems, it is necessary to convert the plane configuration of the MXene membrane into an interactive structure with an open and porous architecture. In this paper, the first discovered and most widely studied Ti3C2Tx MXene materials are used as an example to introduce the unique construction methods of MXene-based porous film structures, structure-effect relationships, and the applications: supercapacitor, terahertz electromagnetic shielding, and flexible sensing, which show significantly improved performance.

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Spontaneous three-dimensional self-assembly of MXene and graphene for impressive energy and rate performance pseudocapacitors

Cited by 46 publications

References 60 publications

Recent progress in MXene layers materials for supercapacitors: High‐performance electrodes

Recent progress in MXene layers materials for supercapacitors: High‐performance electrodes

Flexible Polymer Hydrogels for Wearable Energy Storage Applications

Constructions and applications of MXene-based porous films

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