期刊
SMALL
卷 15, 期 8, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201804732
关键词
fiber-shaped supercapacitors; high conductivity; MXenes; poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS); wet-spinning
类别
资金
- Australian Research Council [FT130100380, IH140100018, DP170102859]
- Deakin University (Alfred Deakin Postdoctoral Research Fellowship)
- Institute for Frontier Materials (Research Excellence Grant Scheme)
- China Scholarship Council [201606930013]
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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据