Mechanically Assembled, Three-Dimensional Hierarchical Structures of Cellular Graphene with Programmed Geometries and Outstanding Electromechanical Properties

被引:52
作者
Ling, Yun [1 ]
Zhuang, Xiatian [1 ]
Xu, Zheng [2 ,3 ]
Xie, Yunchao [1 ]
Zhu, Xiaoyu [4 ]
Xu, Yadong [4 ]
Sun, Bohan [1 ]
Lin, Jian [1 ]
Zhang, Yihui [2 ]
Yan, Zheng [1 ,4 ]
机构
[1] Univ Missouri, Dept Mech & Aerosp Engn, Columbia, MO 65211 USA
[2] Tsinghua Univ, AML, Dept Engn Mech, Ctr Flexible Elect Technol, Beijing 100084, Peoples R China
[3] Xi An Jiao Tong Univ, State Key Lab Mfg & Syst Engn, Sch Mech Engn, Xian 710049, Shaanxi, Peoples R China
[4] Univ Missouri, Dept Biomed Biol & Chem Engn, Columbia, MO 65211 USA
基金
中国国家自然科学基金; 美国农业部;
关键词
cellular graphene; 3D assembly; flexible; stretchable; supercapacitor; LED; HIGH-PERFORMANCE; ARCHITECTURES; MESOSTRUCTURES; TEMPLATES; SCAFFOLDS; KIRIGAMI; COMPLEX;
D O I
10.1021/acsnano.8b06675
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Three-dimensional (3D) cellular graphene structures have wide applications in energy storage, catalysis, polymer composites, electromagnetic shielding, and many others. However, the current strategies to form cellular graphene are only able to realize limited structure control and are hard to achieve the construction of 3D hierarchical architectures with complex, programmed configurations, limiting the design capabilities to satisfy various next-generation device applications. In addition, cellular graphene usually exhibits limited electromechanical properties, and its electrical and electrochemical performances are dramatically affected by mechanical deformations, constraining its applications in emerging wearable electronics and energy devices. Herein, we report a simple, general, and effective route to 3D hierarchical architectures of cellular graphene with desired geometries through the use of a mechanically guided, 3D assembly approach to overcome the aforementioned two challenges. Demonstrations include more than 10 3D hierarchical architectures with diverse configurations, ranging from mixed tables and tents, to double-floor helices, to kirigami/origami-inspired structures, and to fully separated multilayer architectures. The LED arrays interconnected with 3D helical coils and 3D interdigital supercapacitors fabricated with solid-state electrolytes provide prototypic examples of wearable devices that exhibit outstanding electromechanical properties and can maintain stable performances with little change in the electrical and electrochemical responses under extreme deformations, in both the static and cyclic loading conditions.
引用
收藏
页码:12456 / 12463
页数:8
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