Highly Conductive Ti3C2Tx MXene Hybrid Fibers for Flexible and Elastic Fiber-Shaped Supercapacitors

被引:277
作者
Zhang, Jizhen [1 ]
Seyedin, Shayan [1 ]
Qin, Si [1 ]
Wang, Zhiyu [1 ]
Moradi, Sepehr [1 ]
Yang, Fangli [1 ]
Lynch, Peter A. [1 ]
Yang, Wenrong [2 ]
Liu, Jingquan [3 ]
Wang, Xungai [1 ]
Razal, Joselito M. [1 ]
机构
[1] Deakin Univ, Inst Frontier Mat, Geelong, Vic 3216, Australia
[2] Deakin Univ, Sch Life & Environm Sci, Geelong, Vic 3216, Australia
[3] Qingdao Univ, Coll Mat Sci & Engn, Inst Graphene Appl Technol Innovat, Qingdao 266071, Peoples R China
基金
澳大利亚研究理事会;
关键词
fiber-shaped supercapacitors; high conductivity; MXenes; poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS); wet-spinning; WALLED CARBON NANOTUBES; ALL-SOLID-STATE; GRAPHENE FIBERS; HIGH PERFORMANCES; OXIDE; CAPACITANCE; NANOCOMPOSITES; MICROFIBERS;
D O I
10.1002/smll.201804732
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Fiber-shaped supercapacitors (FSCs) are promising energy storage solutions for powering miniaturized or wearable electronics. However, the scalable fabrication of fiber electrodes with high electrical conductivity and excellent energy storage performance for use in FSCs remains a challenge. Here, an easily scalable one-step wet-spinning approach is reported to fabricate highly conductive fibers using hybrid formulations of Ti3C2Tx MXene nanosheets and poly(3,4-ethylenedioxythiophene):polystyrene sulfonate. This approach produces fibers with a record conductivity of approximate to 1489 S cm(-1), which is about five times higher than other reported Ti3C2Tx MXene-based fibers (up to approximate to 290 S cm(-1)). The hybrid fiber at approximate to 70 wt% MXene shows a high volumetric capacitance (approximate to 614.5 F cm(-3) at 5 mV s(-1)) and an excellent rate performance (approximate to 375.2 F cm(-3) at 1000 mV s(-1)). When assembled into a free-standing FSC, the energy and power densities of the device reach approximate to 7.13 Wh cm(-3) and approximate to 8249 mW cm(-3), respectively. The excellent strength and flexibility of the hybrid fibers allow them to be wrapped on a silicone elastomer fiber to achieve an elastic FSC with 96% capacitance retention when cyclically stretched to 100% strain. This work demonstrates the potential of MXene-based fiber electrodes and their scalable production for fiber-based energy storage applications.
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页数:9
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