Ant-nest-inspired porous structure for MXene composites with high-performance energy-storage and actuating multifunctions  

作　　者：Yi Wang Guanfeng Xue Zhiling Luo Wei Zhang Luzhuo Chen 

机构地区：[1]Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials,College of Physics and Energy,Fujian Normal University,Fuzhou 350117,China [2]Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering,Fuzhou 350117,China

出　　处：《Nano Research》2024年第7期6673-6685,共13页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.52373113 and 52302038);Natural Science Foundation of Fujian Province(Nos.2021J02012 and 2021J01186);Top Young Talents Program of Fujian Province and Open Research Fund Program of the State Key Laboratory of Low-Dimensional Quantum Physics(No.KF202214).

摘　　要：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.

关 键 词：MXene graphene ant nest SUPERCAPACITOR ACTUATOR multi-functional 

分 类 号：TB383[一般工业技术—材料科学与工程]