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当前位置:首页资料下载上海腾拔质构仪用于测定水凝胶的应力应变和疲劳性能

上海腾拔质构仪用于测定水凝胶的应力应变和疲劳性能

发布时间:2023/11/15点击次数:597

ABSTRACT: Flexible energy storage devices and sensors are twokey factors for wearable electronics. Designing a multifunctionalcomponent that combines a sensor and high-performing energystorage is exciting but remains a great challenge. Here, a multifunctional hydrogel with mechanical properties has been prepared by introducing polydopamine (PDA) into a chemically crosslinked network of poly(vinyl alcohol) (PVA) and poly-(ethylene glycol) (PEG). A film electrode containing PDA is grown in situ on the hydrogel, and the resultant device can be employed as a supercapacitor and pressure sensor simultaneously. The supercapacitor exhibits an areal specific capacitance of 210.2 mF cm−2 at a current density of 0.2 mA cm−2. As a flexible sensor, the device has a broad pressure range and good sensitivity (0.57 kPa−1) with a pressure range of 0−5 kPa. The device can stably detect human motion from a gentle wrist pulse to tight clutching, providing a solution for integrating energy storage devices with functional sensors in wearable electronic applications.


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