journal article·2022-05-04

Highly Skin-Compliant Polymeric Electrodes with Synergistically Boosted Conductivity toward Wearable Health Monitoring

Linkai Lan, Feng Li, Wen Li, Rui Chen, Zhuang Xiong, Yongjie He, Nabonswendé Aïda Nadège Ouedraogo, Bin Ai, Luqi Tao, Kuan Sun, Shanshan Chen

ACS Applied Materials & Interfaces· Volume 14· Issue 17
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Abstract

Despite rapid advances in stretchable electrodes, successful examples of polymeric dry electrodes are limited. Especially in wearable health monitoring, it is urgent to develop biocompatible electrodes that possess intrinsic skin-compliance while maintaining a high conductivity. Herein, a strategy is demonstrated to synergistically regulate the interpenetration behavior and molecular crystallinity in the blend via embedding a novel double network, i.e. physically cross-linked poly(vinyl alcohol) (PVA) and covalently cross-linked polyethylene glycol diacrylate (PEGDA), into the PEDOT:PSS matrix. The favorable interaction energy between PVA and PEGDA enables well-distributed microstructure with finer phase separation in the film, affording a low Young's modulus of 16 MPa with a high conductivity of 442 S/cm. Consequently, the optimal polymeric electrode can acquire high-quality electromyogram (EMG) and electrocardiogram (ECG) signals. Our results provide a feasible approach for producing skin-compliant polymeric electrodes toward next-generation health monitors.
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Research context

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Conducting polymers and applications · Tactile and Sensory Interactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems, CQU-NUS Renewable Energy Materials & Devices Joint Laboratory, School of Energy & Power Engineering, Chongqing University, Chongqing 400044, People’s Republic of China

Laboratory of Advanced Materials, Fudan University, 220 Handan, Shanghai 200433, People’s Republic of China

Key Laboratory of Power Transmission Equipment and System Security and New Technology, School of Electrical Engineering and State, Chongqing University, Chongqing 400044, People’s Republic of China

Chongqing Key Laboratory of Bio perception & Intelligent Information Processing, School of Microelectronics and Communication Engineering, Chongqing University, Chongqing 400044, People’s Republic of China

Funding

Fudan University · Natural Science Foundation of Chongqing · Central University Basic Research Fund of China · National Natural Science Foundation of China

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