MXene–carbon nanotube composite electrodes for high active mass asymmetric supercapacitors

Liang, Wenyu; Zhitomirsky, Igor

doi:10.1039/d0ta12485k

Cited by 50 publications

(24 citation statements)

References 61 publications

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“…The tortuous channels created by stochastically distributed low-dimensional materials cannot guarantee efficient ion diffusion. [13][14][15] Moreover, this simple hybridization is difficult to improve antioxidant stability. In regard to electrochemical energy storage, MXenebased materials still suffer from the intrinsic restacking tendency, reduced accessibility of electrochemical surface area, and limited ion transport.…”

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confidence: 99%

Manipulating the Interlayer Spacing of 3D MXenes with Improved Stability and Zinc‐Ion Storage Capability

Peng

Wang

et al. 2021

Adv Funct Materials

113

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2D transition metal carbides/nitrides (MXenes) have excellent physicalchemical properties, which makes them promising for electrochemical energy storage devices. However, because of their inherent self-stacking and narrow interlayer spacing, it is rarely used in multivalent ion energy storage systems. In this study, fatty diamines and aromatic diamines with different molecular sizes are inserted between MXene interlayers as pillars through a one-step amination process to inhibit the self-stacking and obtain different expanded interlayer spacings with improved antioxidant stability. X-ray diffraction results show that interlayer spacing of MXene increases from 1.23 to 1.40 nm. The p-phenylenediamine-intercalated MXene (PDA-MXene) exhibits better matching interlayer spacing (1.38 nm) and pore structure for improved electrolyte-accessible surface area, enhanced charge-transport properties, and promoted Zn 2+ ions storage. Therefore, zinc-ion hybrid supercapacitor (ZHSC) using PDA-MXene as cathode exhibits higher specific capacitance (124.4 F g −1 at 0.2 A g −1 ) in 2 m ZnSO 4 electrolyte together with outstanding cycling stability (85% capacity retention after 10 000 cycles at 1 A g −1 ). This study provides a route for precise control of MXene interlayer spacing by small organic molecules, which can be used to observe efficient charge storage in MXene-based electrochemical energy storage devices by optimizing interlayer spacing.

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confidence: 99%

Manipulating the Interlayer Spacing of 3D MXenes with Improved Stability and Zinc‐Ion Storage Capability

Peng

Wang

et al. 2021

Adv Funct Materials

113

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“…At the same time, CAC-4 encloses the larger area than CC on the basis of the CV curves (Figure S2a) owing to the chemical activation. On account of the effect of ratios of precursor/KOH, CV curves of CAC samples (Figure 2b) at a scan rate of 100 mV s -1 show that CAC-4 with the ratio of 1:1.5 exhibits the largest area of loop, suggesting the highest capacitance 39 . As for the performance of temperature, the CV curve of CAC-4 (Figure S2b) presents the largest encircled area, demonstrating the superior temperature of 800 ℃.…”

Section: Please Do Not Adjust Marginsmentioning

confidence: 99%

Celery-derived porous carbon materials for superior performance supercapacitors

Liu

et al. 2021

Nanoscale Adv.

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“…In addition, the electric charges of the co-dispersants helped to disperse Ti 3 C 2 T x with CNTs by electrostatic interaction. [78]…”

Section: Co-dispersionmentioning

confidence: 99%

MXene/Carbon Nanotube Hybrids: Synthesis, Structures, Properties, and Applications

Zhou

et al. 2021

ChemSusChem

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tectures have been synthesized by a number of methods and applied in numerous fields. Herein, after the discussion about general synthesis approaches, architectures, and properties of the hybrids, this Review summarized the recent advances in the application of MXene/CNT hybrids in energy storage devices, sensors, electrocatalysis, electromagnetic interference shielding, and water treatment, in which the function of individual components was clarified. In the end, the current research trend in this field were discussed and several technical issues were highlighted along with some suggestions on future research directions.

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MXene–carbon nanotube composite electrodes for high active mass asymmetric supercapacitors

Abstract: This article describes for the first time the fabrication of an asymmetric device, which is based on negative Ti3C2Tx (MXene) - multiwalled carbon nanotube (MCNT) electrodes and positive polypyrrole (PPy)...

Cited by 50 publications

References 61 publications

Manipulating the Interlayer Spacing of 3D MXenes with Improved Stability and Zinc‐Ion Storage Capability

Manipulating the Interlayer Spacing of 3D MXenes with Improved Stability and Zinc‐Ion Storage Capability

Celery-derived porous carbon materials for superior performance supercapacitors

MXene/Carbon Nanotube Hybrids: Synthesis, Structures, Properties, and Applications

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