Perspective on Micro-Supercapacitors

Sun, Xiangfei; Chen, Kunfeng; Feng, Liang; Zhi, Chunyi; Xue, Dongfeng

doi:10.3389/fchem.2021.807500

Cited by 20 publications

(15 citation statements)

References 169 publications

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“…24 In addition, electrode materials utilized in PMSCs are basically in accordance with conventional SCs, which can be divided into two types based on the charge storage mechanisms: (1) electric double layered capacitor (EDLC) type materials, relying on the mechanism of ion adsorption/desorption on the surface of electrodes; (2) pseudocapacitive materials, depending on the reversible faradaic redox reaction between the electrodes and electrolyte ions. 25 Basically, the specific capacitance of pseudocapacitive materials, such as metal oxides and hydroxides, is higher than that of EDLC type materials (such as the carbonbased materials) owing to the fast reversible faradaic redox reactions. [26][27][28] However, the universal drawback of PMSCs and SCs is the unsatisfactory energy density in comparison with batteries.…”

Section: Configuration and Energy Storage Mechanism Of Pmscsmentioning

confidence: 99%

Planar micro-supercapacitors toward high performance energy storage devices: design, application and prospects

Zhu

Zhang

et al. 2023

Energy Adv.

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Section: Configuration and Energy Storage Mechanism Of Pmscsmentioning

confidence: 99%

Planar micro-supercapacitors toward high performance energy storage devices: design, application and prospects

Zhu

Zhang

et al. 2023

Energy Adv.

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“…With the development of miniaturized electronic devices used in every field of society, the development of multifunctional supermicrocapacitors is essential [201]. The use of MXene polymer-based nanocomposites in such capacitors is described as follows.…”

Section: Energy Applicationsmentioning

confidence: 99%

Advancements in MXene-Polymer Nanocomposites in Energy Storage and Biomedical Applications

et al. 2022

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MXenes are 2D ceramic materials, especially carbides, nitrides, and carbonitrides derived from their parent ‘MAX’ phases by the etching out of ‘A’ and are famous due to their conducting, hydrophilic, biocompatible, and tunable properties. However, they are hardly stable in the outer environment, have low biodegradability, and have difficulty in drug release, etc., which are overcome by MXene/Polymer nanocomposites. The MXenes terminations on MXene transferred to the polymer after composite formation makes it more functional. With this, there is an increment in photothermal conversion efficiency for cancer therapy, higher antibacterial activity, biosensors, selectivity, bone regeneration, etc. The hydrophilic surfaces become conducting in the metallic range after the composite formation. MXenes can effectively be mixed with other materials like ceramics, metals, and polymers in the form of nanocomposites to get improved properties suitable for advanced applications. In this paper, we review different properties like electrical and mechanical, including capacitances, dielectric losses, etc., of nanocomposites more than those like Ti3C2Tx/polymer, Ti3C2/UHMWPE, MXene/PVA‐KOH, Ti3C2Tx/PVA, etc. along with their applications mainly in energy storing and biomedical fields. Further, we have tried to enlist the MXene‐based nanocomposites and compare them with conducting polymers and other nanocomposites. The performance under the NIR absorption seems more effective. The MXene‐based nanocomposites are more significant in most cases than other nanocomposites for the antimicrobial agent, anticancer activity, drug delivery, bio‐imaging, biosensors, micro‐supercapacitors, etc. The limitations of the nanocomposites, along with possible solutions, are mentioned.

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“…The extensive application of wearable/flexible electronics in implantable medical devices, intelligent electronic skins and foldable displays, etc., is driving strong demand for in-plane micro-supercapacitor (MSC) devices [1][2][3]. The unremitting efforts on in-plane MSC focus on the large-size and flexible film electrodes, contributing to the high dynamics transmission and energy density even in arbitrary bending [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Bending Resistance Covalent Organic Framework Superlattice: “Nano-Hourglass”-Induced Charge Accumulation for Flexible In-Plane Micro-Supercapacitors

Zhang

Xiong

et al. 2022

Nano-Micro Lett.

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Covalent organic framework (COF) film with highly exposed active sites is considered as the promising flexible self-supported electrode for in-plane micro-supercapacitor (MSC). Superlattice configuration assembled alternately by different nanofilms based on van der Waals force can integrate the advantages of each isolated layer to exhibit unexpected performances as MSC film electrodes, which may be a novel option to ensure energy output. Herein, a mesoporous free-standing A-COF nanofilm (pore size is 3.9 nm, averaged thickness is 4.1 nm) with imine bond linkage and a microporous B-COF nanofilm (pore size is 1.5 nm, averaged thickness is 9.3 nm) with β-keto-enamine-linkages are prepared, and for the first time, we assembly the two lattice matching films into sandwich-type superlattices via layer-by-layer transfer, in which ABA–COF superlattice stacking into a “nano-hourglass” steric configuration that can accelerate the dynamic charge transportation/accumulation and promote the sufficient redox reactions to energy storage. The fabricated flexible MSC–ABA–COF exhibits the highest intrinsic CV of 927.9 F cm−3 at 10 mV s−1 than reported two-dimensional alloy, graphite-like carbon and undoped COF-based MSC devices so far, and shows a bending-resistant energy density of 63.2 mWh cm−3 even after high-angle and repeat arbitrary bending from 0 to 180°. This work provides a feasible way to meet the demand for future miniaturization and wearable electronics.

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Perspective on Micro-Supercapacitors

Cited by 20 publications

References 169 publications

Planar micro-supercapacitors toward high performance energy storage devices: design, application and prospects

Planar micro-supercapacitors toward high performance energy storage devices: design, application and prospects

Advancements in MXene-Polymer Nanocomposites in Energy Storage and Biomedical Applications

Bending Resistance Covalent Organic Framework Superlattice: “Nano-Hourglass”-Induced Charge Accumulation for Flexible In-Plane Micro-Supercapacitors

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