Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/138910
Title: A solid‐state fibriform supercapacitor boosted by host – guest hybridization between the carbon nanotube scaffold and MXene nanosheets
Authors: Yu, Chenyang
Gong, Yujiao
Chen, Ruyi
Zhang, Mingyi
Zhou, Jinyuan
An, Jianing
Lv, Fan
Guo, Shaojun
Sun, Gengzhi
Keywords: Engineering::Mechanical engineering
Issue Date: 2018
Source: Yu, C., Gong, Y., Chen, R., Zhang, M., Zhou, J., An, J., . . . Sun, G. (2018). A solid‐state fibriform supercapacitor boosted by host – guest hybridization between the carbon nanotube scaffold and MXene nanosheets. Small, 14(29), 1801203-. doi:10.1002/smll.201801203
Journal: Small
Abstract: Fiber-shaped supercapacitors with improved specific capacitance and high rate capability are a promising candidate as power supply for smart textiles. However, the synergistic interaction between conductive filaments and active nanomaterials remains a crucial challenge, especially when hydrothermal or electrochemical deposition is used to produce a core (fiber)-shell (active materials) fibrous structure. On the other hand, although 2D pseudocapacitive materials, e.g., Ti3 C2 T x (MXene), have demonstrated high volumetric capacitance, high electrical conductivity, and hydrophilic characteristics, MXene-based electrodes normally suffer from poor rate capability owing to the sheet restacking especially when the loading level is high and solid-state gel is used as electrolyte. Herein, by hosting MXene nanosheets (Ti3 C2 T x ) in the corridor of a scrolled carbon nanotube (CNT) scaffold, a MXene/CNT fiber with helical structure is successfully fabricated. These features offer open spaces for rapid ion diffusion and guarantee fast electron transport. The solid-state supercapacitor based on such hybrid fibers with gel electrolyte coating exhibits a volumetric capacitance of 22.7 F cm-3 at 0.1 A cm-3 with capacitance retention of 84% at current density of 1.0 A cm-3 (19.1 F cm-3 ), improved volumetric energy density of 2.55 mWh cm-3 at the power density of 45.9 mW cm-3 , and excellent mechanical robustness.
URI: https://hdl.handle.net/10356/138910
ISSN: 1613-6810
DOI: 10.1002/smll.201801203
Schools: School of Mechanical and Aerospace Engineering 
Rights: © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MAE Journal Articles

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