Multifunctional Shape Memory Composites for Joule Heating, Self‐Healing, and Highly Efficient Microwave Absorption

Abstract Traditional microwaves absorption materials (MAMs) are applied in the form of coatings, generally inflexible, with high production costs and poor adaptability to applications different locations. The diversification application scenarios requires multifunctionalities, but it is extremely challenging integrate multifunctionalities within single material at present. Herein, a multifunctional CoNC@GN/PCL/TPU MAMs synthesized. CoNC@GN nano‐micro absorber has high‐efficiency microwave ability. electromagnetic performance ultra‐light (4 wt.%), ultra‐thin (2.3 mm), broadband (6.21 GHz), which better than similar MAMs. Additionally, samples have highly efficient electro‐thermal conversion properties, enabling controlled electrical heating excellent self‐healing properties. More remarkably, sample an electrically driven shape memory effect that allows target multi‐angle incident waves. Therefore, absorbers key truly opening up opportunities for flexible, memory, frontier such as wearables, deformable robots, chip protection.