Wearable thermoelectric devices hold significant promise in the realm of self-powered wearable electronics, offering applications in energy harvesting, movement tracking, and health monitoring. Nevertheless, developing thermoelectric devices with exceptional flexibility, enduring thermoelectric stability, multifunctional sensing, and comfortable wear remains a challenge. In this work, a stretchable MXene-based thermoelectric fabric is designed to accurately discern temperature and strain stimuli. This is achieved by constructing an adhesive polydopamine (PDA) layer on the nylon fabric surface, which facilitates the subsequent MXene attachment through hydrogen bonding. This fusion results in MXene-based thermoelectric fabric that excels in both temperature sensing and strain sensing. The resultant MXene-based thermoelectric fabric exhibits outstanding temperature detection capability and cyclic stability, while also delivering excellent sensitivity, rapid responsiveness (60 ms), and remarkable durability in strain sensing (3200 cycles). Moreover, when affixed to a mask, this MXene-based thermoelectric fabric utilizes the temperature difference between the body and the environment to harness body heat, converting it into electrical energy and accurately discerning the body's respiratory rate. In addition, the MXene-based thermoelectric fabric can monitor the state of the body's joint through its own deformation. Furthermore, it possesses the capability to convert solar energy into heat. These findings indicate that MXene-based thermoelectric fabric holds great promise for applications in power generation, motion tracking, and health monitoring.

可穿戴热电设备在自供电可穿戴电子产品领域具有重大前景，可在能量收集、运动跟踪和健康监测方面提供应用。然而，开发具有卓越灵活性、持久热电稳定性、多功能传感和舒适佩戴的热电器件仍然是一个挑战。在这项工作中，设计了一种基于 MXene 的可拉伸热电织物，用于准确识别温度和应变刺激。这是通过在尼龙织物表面构建粘合聚多巴胺 (PDA) 层来实现的，这有利于随后通过氢键连接 MXene。这种融合产生了基于 MXene 的热电织物，在温度传感和应变传感方面均表现出色。由此产生的基于 MXene 的热电织物具有出色的温度检测能力和循环稳定性，同时还具有出色的灵敏度、快速响应能力（60 毫秒）和卓越的应变传感耐用性（3200 次循环）。此外，当贴在口罩上时，这种基于 MXene 的热电织物利用身体与环境之间的温差来利用身体热量，将其转化为电能并准确识别身体的呼吸频率。此外，基于MXene的热电织物可以通过自身的变形来监测身体关节的状态。此外，它还具有将太阳能转化为热能的能力。这些发现表明，基于 MXene 的热电织物在发电、运动跟踪和健康监测方面具有广阔的应用前景。