Wearable systems for continuous monitoring of muscle activity, data storage, and feedback treatment delivery represent innovative approaches to personalized healthcare. Monitoring the physiological responses of the body requires wearable systems with operational stability and satisfying biocompatibility to track real-time human motion parameters. However, progress of wearable electronics has been hampered by cumbersome power supply with inferior electrochemical stability, poisonous components and rigidity of commercial sensors. Herein, a highly integrated all-in-one strategy, i.e., a biocompatible, lightweight and flexible urea (Ur)-modified sodium alginate (SA) composite hydrogel (Ur–SA) designed as both a wearable strain sensor and the electrolyte of flexible zinc-ion batteries (ZIBs) is reported. Benefiting from the modulated Zn²⁺ solvation structure and the in situ generated electrolyte/electrode interphase in Ur–SA, the screen-printed planar ZIBs guarantee the operationally stable energy supply for a wearable sensing system. The flexibility and superior biocompatibility of Ur–SA validated through in vivo implantation endows itself with superior sensing properties. Especially, the modular wearable sensing system driven by screen-printed ZIBs has superior operational durability, ensuring a stable energy supply to the microcontroller unit (MCU) and biocompatible Ur–SA strain sensors, thereby continuously monitoring real-time physiological signals and human movements and then wirelessly transmitting them to mobile phones. These mark the realization of a safe, stable and biocompatible integrated wearable monitoring system. This design principle provides new insights into multivalent semi-solid electrochemistry, healthcare, implantable biomaterials and biomedical devices.

中文翻译：

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用于实时响应无线可穿戴电子产品的生物相容性稳定的准固态锌离子电池


用于持续监测肌肉活动、数据存储和反馈治疗提供的可穿戴系统代表了个性化医疗保健的创新方法。监测身体的生理反应需要具有运行稳定性和满足生物相容性的可穿戴系统来跟踪实时人体运动参数。然而，可穿戴电子产品的进步一直受到笨重的电源、较差的电化学稳定性、有毒成分和商用传感器的刚性等问题的阻碍。本文提出了一种高度集成的一体化策略，即一种生物相容性、轻质且柔性的尿素（Ur）改性海藻酸钠（SA）复合水凝胶（Ur-SA），设计为既可穿戴应变传感器又可作为柔性柔性电解质的电解质。据报道，锌离子电池（ZIB）。受益于Ur-SA中调制的Zn ²⁺ 溶剂化结构和原位生成的电解质/电极界面，丝网印刷平面ZIB保证了可穿戴传感系统的运行稳定的能量供应。通过体内植入验证的 Ur-SA 的灵活性和卓越的生物相容性赋予其卓越的传感特性。特别是，由丝网印刷ZIB驱动的模块化可穿戴传感系统具有卓越的操作耐用性，确保为微控制器单元（MCU）和生物相容性Ur-SA应变传感器提供稳定的能源供应，从而持续监测实时生理信号和人体运动，然后将它们无线传输到手机上。这标志着安全、稳定、生物相容的一体化可穿戴监测系统的实现。 这一设计原理为多价半固体电化学、医疗保健、可植入生物材料和生物医学设备提供了新的见解。