Electrothermal heater (ETH) is very promising in wearable electronic area for its potential thermotherapy and electrical-warming garment applications. To fabricate a suitable conductive material for wearable ETH, knitted cotton is used as substrate for in-situ polymerization of pyrrole monomers, producing conductive polypyrrole/knitted cotton fabric (PKCF) with good flexibility and stretchability. A parallel strategy for current collectors is taken to enhance the temperatures of prepared PKCF from 37.0 to 51.0 °C at 8 V. This PKCF provides a service time about 13.5 h in a continuous electrothermal process, keeping a temperature above 35 °C. Besides, the PKCF still shows good electrothermal performances after bent or stretched several thousand times, and can be sewn on fabric to realize its electrothermal function in garments, which indicates a promising wearable market.

电热加热器（ETH）由于其潜在的热疗和电热服装应用而在可穿戴电子领域非常有前途。为了制造适合于可穿戴ETH的导电材料，将针织棉用作吡咯单体的原位聚合基材，从而生产出具有良好柔韧性和可拉伸性的导电聚吡咯/针织棉织物（PKCF）。采取了一种针对集电器的并行策略，将制得的PKCF在8 V下的温度从37.0升高到51.0°C。该PKCF在连续电热过程中提供约13.5 h的工作时间，保持温度高于35°C。此外，PKCF弯曲或拉伸数千次后仍显示出良好的电热性能，可缝在织物上以实现其在服装中的电热功能，