Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, Liaoning 116024, China.
Neware Technology Limited, Shenzhen, Guangdong 518049, China.
ACS Appl Mater Interfaces. 2020 May 13;12(19):21779-21787. doi: 10.1021/acsami.0c05465. Epub 2020 May 4.
Wearable energy storage and flexible body biomolecule detection are two key factors for real-time monitoring of human health in a practical environment. It would be rather exciting if one wearable system could be used for carrying out both energy storage and biomolecule detection. Herein, carbon fiber-based NiCoO nanosheets coated with nitrogen-doped carbon (CF@NiCoO@N-C) have been prepared via a simple electrochemical deposition method. Interestingly, being a dual-functional active material, CF@NiCoO@N-C exhibits excellent behaviors as a supercapacitor and prominent electrocatalytic properties, which can be applied for enzyme-free biosensor. It exhibits outstanding energy storage, high capacitive stability (94% capacitive retention after 10,000 cycles), and pre-eminent flexible ability (95% capacitive retention after 10,000 bending cycles), as well as high sensitivity for enzyme-free glucose detection (592 μA mM). Moreover, the CF@NiCoO@N-C-based wearable supercapacitors would be used as self-powered energy systems for enzyme-free biosensors. Integrating with bluetooth, we have successfully developed a wearable self-powered enzyme-free smartsensor, remotely controlled using a smartphone for health monitoring in a practical environment. From this prospective study, it was found that the design of wearable self-powered smartsensors, demonstrating energy storage and enzyme-free biosensing in one system, provides a promising device for detecting body biomolecules, which has the potential to be implemented in the artificial intelligent fields.
可穿戴式储能和柔性体生物分子检测是在实际环境中实时监测人体健康的两个关键因素。如果一个可穿戴系统能够同时进行储能和生物分子检测，那将是非常令人兴奋的。在此，通过简单的电化学沉积方法制备了基于碳纤维的 NiCoO 纳米片，其表面涂覆有氮掺杂碳（CF@NiCoO@N-C）。有趣的是，作为一种双功能活性材料，CF@NiCoO@N-C 表现出作为超级电容器的优异性能和突出的电催化性能，可用于无酶生物传感器。它表现出出色的储能能力、高电容稳定性（循环 10000 次后电容保持率为 94%）和卓越的柔韧性（弯曲循环 10000 次后电容保持率为 95%），以及对无酶葡萄糖检测的高灵敏度（592 μA mM）。此外，基于 CF@NiCoO@N-C 的可穿戴超级电容器可用作无酶生物传感器的自供电能源系统。通过集成蓝牙，我们成功地开发了一种可穿戴式自供电无酶智能传感器，可使用智能手机进行远程控制，用于实际环境中的健康监测。从这项前瞻性研究中可以发现，设计可穿戴式自供电智能传感器，在一个系统中同时实现储能和无酶生物传感，为检测体生物分子提供了一种有前途的设备，有望在人工智能领域得到应用。
