High performance stretchable fibrous supercapacitors and flexible strain sensors based on CNTs/MXene-TPU hybrid fibers

Wu, Guiqing; Yang, Zhipeng; Zhen-yi, Zhang; Ji, Bingyan; Hou, Chengyi; Li, Yaogang; Wei, Jia; Zhang, Qinghong; Wang, Hongzhi

doi:10.1016/j.electacta.2021.139141

Cited by 40 publications

(24 citation statements)

References 43 publications

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“…The high-resolution XPS spectra of Mn 2p, Mn 3s, and O 1s in the Ag@NiCo/MnO x NW electrode are displayed in Figure b–e. The peaks of Mn 2p 1/2 and Mn 2p 3/2 can be deconvoluted into multiple peaks at 643.4/654.7 eV and 642.0/653.7 eV, respectively, stemming from Mn 4+ and Mn 2+ (Figure b). − The presence of Mn 2+ was also confirmed by the satellite peak at 646.4 eV accompanied by Mn 2p 3/2 . The binding-energy separation between Mn 3s was 5.25 eV, further demonstrating the coexistence of MnO and MnO 2 (Figure S5).…”

Section: Resultsmentioning

confidence: 82%

Structural Engineering of Ultrathin, Lightweight, and Bendable Electrodes Based on a Nanowire Network Current Collector Enables Flexible Energy-Storage Devices

Zhong

Chen

Liang

et al. 2022

ACS Appl. Energy Mater.

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Because of the rapid development of portable electronics, there is an urgent need for ultrathin, lightweight, and bendable electrodes for flexible and wearable energy-storage devices (FWESDs). This paper introduces the structural engineering of flexible electrodes with the above characteristics based on a Ag nanowire (NW) network current collector. The conductive interconnected networks give electrodes a highway of electron transport and excellent flexibility. Two kinds of nanostructures have been designed for high-performance electrodes, enabling diverse applications in FWESDs. In a core–shell Ag@NiCo/MnO x NW electrode, the MnO x thin shell layer favors a quick and reversible faradic reaction at the near surface. The electrode achieves a specific capacity of 41 mF cm–2 (350 F g–1), a capacitance retention rate of 88% after 2000 cycles, and stable electrochemical performance under repeated bending. In double-layer Ag@NiCo NW-Co(OH)2 electrode, the vertical growth of Co(OH)2 nanosheets covers the entire network, generating a high mass loading and abundant pathways for ion diffusion. As a result, the electrode delivers a high capacity of 376 mF cm–2 (1886 F g–1) and an excellent Coulombic efficiency of 95%. Both electrodes are demonstrated in FWESDs under various working scenarios, indicating promising prospects in the next generation of flexible electronics.

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Section: Resultsmentioning

confidence: 82%

Structural Engineering of Ultrathin, Lightweight, and Bendable Electrodes Based on a Nanowire Network Current Collector Enables Flexible Energy-Storage Devices

Zhong

Chen

Liang

et al. 2022

ACS Appl. Energy Mater.

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“…Mass production, high efficiency, and low cost are the advantages of this spinning method, which integrates conductive fillers into polymers. Wu et al 76 prepared porous CNTs/MXene-TPU hybrid fibers by wet spinning to promote the sensitivity of pressure sensors. This sensor can be applied in wearable fabrics, health monitoring, and human-computer interaction because of its advantages of high sensitivity, fast response time, and good flexibility.…”

Section: Mxene/polymer Compositesmentioning

confidence: 99%

Review of MXene Nanosheet Composites for Flexible Pressure Sensors

Hang

Wang

Zhang

et al. 2022

ACS Appl. Nano Mater.

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Recently, there has been a huge demand for flexible pressure sensors in various fields, including smart wearable textiles, health detection, and electronic skin. Flexible pressure sensors have been developed with high sensitivity, wide sensing range, rapid response time, and excellent cycling stability. Currently, emerging conductive materials include two-dimensional transition metal carbides and nitrides (MXenes). These materials have attracted immense attention in the field of flexible pressure sensors due to their high electrical conductivity, large specific surface area, and satisfactory hydrophilicity. This review highlights different preparation methods of MXene composites. It also summarizes the nanostructure design of pressure-sensitive materials to improve the performance of flexible pressure sensors for soft electronics applications. This review provides a comprehensive overview of the progress of MXene composites and their prospects in the area of flexible pressure sensors and summarizes the applications and challenges of these sensors in intelligent wearables. This review also proposes some suggestions for developing a new generation of intelligent textiles.

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“…The SEM image [98..100] indicates rGO/MXene fibers show the layered structure with more crumpled and porous nature due to more grain boundaries brought in by the smaller sized MXene sheets. Wu et al [105] prepared CNTs/MXene-TPU hybrid fiber with porous structure by wet spinning technique. TPU molecular chains act as main skeleton, while CNTs and MXene constitute conductive networks.…”

Section: Wet Spinningmentioning

confidence: 99%

Recent Trends in Synthesis and Applications of Porous MXene Assemblies: A Topical Review

Chen

Asif

Wang

et al. 2021

The Chemical Record

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MXene possesses high conductivity, excellent hydrophilicity, rich surface chemistry, hence holds great potential in various applications. However, MXene materials have low surface area utilization due to the agglomeration of ultrathin nanosheets. Assembling 2D MXene nanosheets into 3D multi‐level architectures is an effective way to circumvent this issue. Incorporation of MXene with other nanomaterials during the assembly process could rationally tune and tailor the specific surface area, porosity and surface chemistry of the MXene assemblies. The complementary and synergistic effect between MXene and nanomaterials could expand their advantages and make up for their disadvantages, thus boost the performance of 3D porous MXene composites. Herein, we summarize the recent progress in fabrication of porous MXene architectures from 2D to 3D, and also discuss the potential applications of MXene nanostructures in energy harvesting systems, sensing, electromagnetic interference shielding, water purification and photocatalysis.

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High performance stretchable fibrous supercapacitors and flexible strain sensors based on CNTs/MXene-TPU hybrid fibers

Cited by 40 publications

References 43 publications

Structural Engineering of Ultrathin, Lightweight, and Bendable Electrodes Based on a Nanowire Network Current Collector Enables Flexible Energy-Storage Devices

Structural Engineering of Ultrathin, Lightweight, and Bendable Electrodes Based on a Nanowire Network Current Collector Enables Flexible Energy-Storage Devices

Review of MXene Nanosheet Composites for Flexible Pressure Sensors

Recent Trends in Synthesis and Applications of Porous MXene Assemblies: A Topical Review

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