Damage-resistant and healable polyacrylonitrile-derived stretchable materials with exceptional fracture toughness and fatigue threshold

PAN-based stretchable materials with high fracture toughness and fatigue threshold. Stretchable materials are widely used in various aspects of our daily lives, however, achieving excellent short and long-term damage tolerance in them, i.e. , high fracture toughness and fatigue threshold at the same time, remains a challenge. Herein, we report a healable and stretchable material with exceptional damage tolerance based on Al 3+ coordinated …