@article{Wang2024, 
author = {Yi Wang and Guanfeng Xue and Zhiling Luo and Wei Zhang and Luzhuo Chen},
title = {Ant-nest-inspired porous structure for MXene composites with high-performance energy-storage and actuating multifunctions},
year = {2024},
journal = {Nano Research},
volume = {17},
number = {7},
pages = {6673-6685},
keywords = {graphene, actuator, MXene, supercapacitor, multi-functional, ant nest},
url = {https://www.sciopen.com/article/10.1007/s12274-024-6587-4},
doi = {10.1007/s12274-024-6587-4},
abstract = {Integrating energy-storage devices (supercapacitors) and shape-deformation devices (actuators) advances the miniaturization and multifunctional development of soft robots. However, soft robots necessitate supercapacitors with high energy-storage performance and actuators with excellent actuation capability. Here, inspired by ant nests, we present a porous structure fabricated by MXene-graphene-methylcellulose (M-GMC) composite, which overcomes the self-stacking of MXene nanosheets and offers a larger specific surface area. The porous structure provides more channels and active sites for electrolyte ions, resulting in high energy storage performance. The areal capacitance of the M-GMC electrode reaches up to 787.9 mF·cm−2, significantly superior to that of the pristine MXene electrode (449.1 mF·cm−2). Moreover, the M-GMC/polyethylene bilayer composites with energy storage and multi-responsive actuation functions are developed. The M-GMC is used as the electrode and the polyethylene is used as the encapsulation layer of the quasi-solid-state supercapacitor. Meanwhile, the actuators fabricated by the bilayer composites can be driven by light or low voltage (≤ 9 V). The maximum bending curvature is up to 5.11 cm−1. Finally, a smart gripper and a fully encapsulated smart integrated circuit based on the M-GMC/polyethylene are designed. The smart gripper enables programmable control with multi-stage deformations. The applications realize the intelligence and miniaturization of soft robots. The ant-nest-inspired M-GMC composites would provide a promising development strategy for soft robots and smart integrated devices.}
}