Multifunctional wearable heater has attracted great interest in personal thermal management, but its potential safety hazards triggered by overheat remain. Herein, in order to minimize the risk of high-temperature induced ignition, a flame retardant Aramid nonwoven fabric was attempted to combine with the highly conductive MXene, where an intimate interface was constructed through their inherent abundant functional groups and the assisted plasma treatment. Interestingly, a very lightweight wearable heater with electromagnetic interference shielding (EMI efficiency of 35.7 dB for single-layer fabric), electrothermal conversion (up to 263 °C in 76 s at a supply voltage of 5 V) and photothermal conversion (up to 107 °C after irradiation for 175 s at light intensity of 125 mW cm⁻²) properties was achieved. These integrated properties arose from the interlacing conductive network cooperated by nonwoven fabric and stacked MXene nanosheets, which facilitated the multiple reflection and absorption of electromagnetic waves or light, as well as the low thermal conductivity. More importantly, the newly formed physical barrier from carbonization of the MXene further enhanced the flame retardancy of nanocomposite fabrics, guaranteeing the security in use. This research provides a versatile yet efficient path to fabricate the new generation of safe wearable MXene-based heater, which will expand their working temperature range.

多功能可穿戴加热器引起了个人热管理的极大兴趣，但其过热引发的安全隐患依然存在。在此，为了将高温引燃的风险降至最低，尝试将阻燃芳纶无纺布与高导电性 MXene 结合，通过其固有的丰富官能团和辅助等离子体处理构建紧密界面。有趣的是，一种非常轻巧的可穿戴加热器具有电磁干扰屏蔽（单层织物的 EMI 效率为 35.7 dB）、电热转换（在 5 V 的电源电压下在 76 秒内高达 263 °C）和光热转换（高达 107以 125 mW cm ^{-2 的}光强度照射 175 s 后的 °C) 特性。这些综合特性源于无纺布和堆叠的 MXene 纳米片协同作用的交错导电网络，这促进了电磁波或光的多次反射和吸收，以及低导热性。更重要的是，MXene碳化新形成的物理屏障进一步增强了纳米复合织物的阻燃性，保证了使用的安全性。这项研究为制造新一代基于 MXene 的安全可穿戴加热器提供了一种通用而有效的途径，这将扩大其工作温度范围。