Wearable Fiber-Based Supercapacitors Enabled by Additive-Free Aqueous MXene Inks for Self-Powering Healthcare Sensors

Junlin Ma; Zewei Cui; Yuhang Du; Jianxin Zhang; Changkai Sun; Chengyi Hou; Nan Zhu

doi:10.1007/s42765-022-00187-y

Advanced Fiber Materials ›› 2022, Vol. 4 ›› Issue (6) : 1535-1544. DOI: 10.1007/s42765-022-00187-y

Research Article

Wearable Fiber-Based Supercapacitors Enabled by Additive-Free Aqueous MXene Inks for Self-Powering Healthcare Sensors

Junlin Ma¹^,² ,
Zewei Cui¹ ,
Yuhang Du¹ ,
Jianxin Zhang¹ ,
Changkai Sun³^,^e ,
Chengyi Hou²^,^f ,
Nan Zhu¹^,^g

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Abstract

Wearable fiber-based electronics have found diverse applications including energy storage, healthcare or thermal management, etc. In particular, additive-free aqueous inks play significant roles in fabrication of wearable fiber-based devices, owning to their nontoxic nature and ease of manufacturing. Herein, wearable carbon fiber-based asymmetric supercapacitors (WASSC) are developed based on additive-free aqueous MXene inks, for self-powering healthcare sensors. The sediments of MXene without further modification are used as inks. Furthermore, combined with additive-free aqueous MXene/polyaniline (MP) inks, WASSC, with a wide voltage window and high capacitance is developed for practical energy supply. Impressively, WASSC has been successfully utilized to power wearable pressure sensors that could monitor motions and pulse signals. This wearable self-powered monitoring system on can accurately monitor the human motions, pronunciation, swallow or wrist pulse, without using the rigid batteries. This advantage realizes a great potential in simple and cost effective monitoring of human health and activities. Besides, self-powered system enables waste recycling of MXene and provides an effective approach for designing wearable and fiber-based self-powered sensors.

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Junlin Ma, Zewei Cui, Yuhang Du, Jianxin Zhang, Changkai Sun, Chengyi Hou, Nan Zhu. Wearable Fiber-Based Supercapacitors Enabled by Additive-Free Aqueous MXene Inks for Self-Powering Healthcare Sensors. Advanced Fiber Materials, 2022, 4(6): 1535‒1544 https://doi.org/10.1007/s42765-022-00187-y

Funding

National Natural Science Foundation of China(22074010); State Key Laboratory for Modification of Chemical Fibers and Polymer Materials(KF2112); National Key Research and Development Program of China(2018AAA0100300)