In Situ Growth of Three‐Dimensional MXene/Metal–Organic Framework Composites for High‐Performance Supercapacitors

Pang, Huan; Liu, Chunli; Bai, Yang; Li, Wenting; Yang, Feifei; Zhang, Guangxun

doi:10.1002/ange.202116282

Cited by 56 publications

(16 citation statements)

References 51 publications

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“…These results demonstrate that the local chemical environments for Ti–C of MXene have been changed for MXene–hemi films, forming more interactions with polar groups (−O, −OH). In the case of O 1s spectra, a sharp increase of the C–Ti–OH peak is consistent with Ti 2p (Figure j) . In addition, upshifts toward higher binding energies were monitored for the O 1s peak, further proving the formation of hydrogen-bonding connections between MXene and hemicellulose.…”

Section: Resultssupporting

confidence: 61%

Robust Bioinspired MXene–Hemicellulose Composite Films with Excellent Electrical Conductivity for Multifunctional Electrode Applications

et al. 2022

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MXene-based structural materials with high mechanical robustness and excellent electrical conductivity are highly desirable for multifunctional applications. The incorporation of macromolecular polymers has been verified to be beneficial to alleviate the mechanical brittleness of pristine MXene films. However, the intercalation of a large amount of insulating macromolecules inevitably compromises their electrical conductivity. Inspired by wood, short-chained hemicellulose (xylo-oligosaccharide) acts as a molecular binder to bind adjacent MXene nanosheets together; this work shows that this can significantly enhance the mechanical properties without introducing a large number of insulating phases. As a result, MXene–hemicellulose films can integrate a high electrical conductivity (64,300 S m–1) and a high mechanical strength (125 MPa) simultaneously, making them capable of being high-performance electrode materials for supercapacitors and humidity sensors. This work proposes an alternative method to manufacture robust MXene-based structural materials for multifunctional applications.

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Section: Resultssupporting

confidence: 61%

Robust Bioinspired MXene–Hemicellulose Composite Films with Excellent Electrical Conductivity for Multifunctional Electrode Applications

et al. 2022

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“…From Fig. 2 a, BTCA shows diffraction peaks at 6.2° and 23° corresponding to (002) lattice plane of Ti 3 C 2 T x and (002) lattice plane of CNF [ 62 ]. After Fe 3 O 4 is introduced, three new diffraction peaks appear at 36.7°, 43.6°, and 63.8° of BTFCA-2, corresponding to the (311), (400) and (440) crystal planes of Fe 3 O 4 , respectively.…”

Section: Resultsmentioning

confidence: 99%

Significantly Enhanced Electromagnetic Interference Shielding Performances of Epoxy Nanocomposites with Long-Range Aligned Lamellar Structures

et al. 2022

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High‑efficiency electromagnetic interference (EMI) shielding materials are of great importance for electronic equipment reliability, information security and human health. In this work, bidirectional aligned Ti3C2Tx@Fe3O4/CNF aerogels (BTFCA) were firstly assembled by bidirectional freezing and freeze-drying technique, and the BTFCA/epoxy nanocomposites with long-range aligned lamellar structures were then prepared by vacuum-assisted impregnation of epoxy resins. Benefitting from the successful construction of bidirectional aligned three-dimensional conductive networks and electromagnetic synergistic effect, when the mass fraction of Ti3C2Tx and Fe3O4 are 2.96 and 1.48 wt%, BTFCA/epoxy nanocomposites show outstanding EMI shielding effectiveness of 79 dB, about 10 times of that of blended Ti3C2Tx@Fe3O4/epoxy (8 dB) nanocomposites with the same loadings of Ti3C2Tx and Fe3O4. Meantime, the corresponding BTFCA/epoxy nanocomposites also present excellent thermal stability (Theat-resistance index of 198.7 °C) and mechanical properties (storage modulus of 9902.1 MPa, Young's modulus of 4.51 GPa and hardness of 0.34 GPa). Our fabricated BTFCA/epoxy nanocomposites would greatly expand the applications of MXene and epoxy resins in the fields of information security, aerospace and weapon manufacturing, etc.

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“…Skin-like electronics are emerging as a new paradigm and have shown wide potential applications in electronic skin, medical treatment, human–machine interfaces, soft robots, and many emerging research fields. − Recently, various electronic devices have moved toward flexibility and conformality, including transistors, sensors, solar cells, and energy storage devices. − Among them, skin-like supercapacitors, as one of the most essential energy sources, have attracted enormous attention due to their high power density, long service life, and fast charge–discharge rate. − More importantly, skin-like supercapacitors can function normally under various mechanical deformations such as bending or stretching, that enable intimate contact with human skin ensuring high comfort. − Hence, skin-like supercapacitors have shown irreplaceable advantages in future wearable electronics.…”

Section: Introductionmentioning

confidence: 99%

Microwave-Welded and Photopolymer-Embedded Silver Nanowire Electrodes for Skin-like Supercapacitors

Wang

Zhao

Liang

et al. 2022

ACS Appl. Energy Mater.

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Silver nanowires (AgNWs) are expected to be used in next-generation flexible transparent conductive electrodes due to their outstanding electronic properties and high transmittance. However, the ineluctable contact resistance between AgNWs and poor stability have limited their use in wearable and conformable devices. In addition, the mechanical peeling damage caused by a polymer substrate with an unmatched Young’s modulus and adhesion force still remains a challenge. Herein, we simultaneously resolve the aforementioned conductivity, stability, and substrate issues. An effective microwave-welded technique and embedded structure are proposed for the fabrication of skin-like AgNW electrodes with high optoelectronic performance and mechanical robustness. Meanwhile, we develop a flexible, stable, and appropriate photopolymer substrate and demonstrate photopolymer-embedded AgNW electrodes with less mechanical damage during the peeling process and outstanding environmental stability even in water. Based on these electrodes, we further fabricated skin-like supercapacitor devices with high area capacitance and excellent flexibility (2000 bending cycles). This reported facile strategy provides meaningful guidance for preparing high-performance skin-like transparent electrodes, showing promising potential for next-generation wearable and epidermal electronics.

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In Situ Growth of Three‐Dimensional MXene/Metal–Organic Framework Composites for High‐Performance Supercapacitors

Cited by 56 publications

References 51 publications

Robust Bioinspired MXene–Hemicellulose Composite Films with Excellent Electrical Conductivity for Multifunctional Electrode Applications

Robust Bioinspired MXene–Hemicellulose Composite Films with Excellent Electrical Conductivity for Multifunctional Electrode Applications

Significantly Enhanced Electromagnetic Interference Shielding Performances of Epoxy Nanocomposites with Long-Range Aligned Lamellar Structures

Microwave-Welded and Photopolymer-Embedded Silver Nanowire Electrodes for Skin-like Supercapacitors

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