Nacre-based carbon nanomeshes for a soft ionic actuator with large and rapid deformation,Journal of Materials Chemistry C

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Nacre-based carbon nanomeshes for a soft ionic actuator with large and rapid deformation
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2019/12/18 , DOI: 10.1039/c9tc06186j
Xiao Han _{1,

2,

3,

4,

5} , Meng Kong _{1,

2,

3,

4,

5} , Mingjie Li _{1,

2,

3,

4,

5} , Xiankai Li _{1,

2,

3,

4,

5} , Weiqing Yang _{1,

2,

3,

4,

5} , Chaoxu Li _{1,

2,

3,

4,

5}

Affiliation

Marine molluscs have inspired to construct robust composites with hierarchical microstructures, and also to design artificial muscles with rapid and controllable deformation. Abalone nacre has the unique “brick and mortar” structure, whose two-dimensional (2D) “mortar” can serve both as the strong adhesive between aragonite platelets and as the raw material for organic and carbon nanomeshes applicable in a soft ionic actuator. Through an optimal production procedure, carbon nanomeshes with abundant micropores (0.7–2 nm) and in-plane mesopores (9–13 nm) are produced in a high yield. When incorporated into the actuator electrodes, their large surface area (>625 m² g⁻¹) and heteroatom doping (>7.5%) ensure to offer large ion storage desired by large deformation. Their in-plane mesopores allow for ion penetration desired by fast actuating kinetics, in contrast to graphene nanosheets that block free ion transportation. The resultant ionic actuator shows a low driving voltage (≤3 V), large deformation strain difference (1.11%), fast actuation (10⁰ s) and air working durability (>10⁴ cycles), being superior to the actuators based on other 2D carbon nanomaterials. Thus, this low-cost and scalable production of carbon nanomeshes offers not only a novel type of biomass-based carbon nanomaterials but also a high-performance electrochemical actuator applicable in soft robotics and smart devices.

中文翻译：

基于珍珠母的碳纳米网，用于大且快速变形的软离子致动器

海洋软体动物启发了人们构建具有分层微观结构的坚固复合材料，并设计出具有快速且可控变形的人造肌肉。鲍鱼珍珠质具有独特的“砖和灰浆”结构，其二维（2D）“砂浆”既可以用作文石薄片之间的强力粘合剂，也可以用作可用于软离子致动器的有机和碳纳米网格的原料。通过最佳的生产程序，可以高产量地生产出具有大量微孔（0.7–2 nm）和面内中孔（9–13 nm）的碳纳米网。当结合到执行器电极中时，它们的大表面积（> 625 m ² g ^-1）和杂原子掺杂（> 7.5％）确保提供大变形所需的大离子存储量。与阻止自由离子传输的石墨烯纳米片相反，它们的平面中孔允许通过快速驱动动力学实现所需的离子渗透。所得离子致动器显示出较低的驱动电压（≤3V），较大的形变应变差（1.11％），快速致动（10 ⁰ s）和空气工作耐久性（> 10 ⁴个循环），优于其他类型的致动器二维碳纳米材料。因此，这种低成本和可扩展的碳纳米网生产不仅提供了一种新型的基于生物质的碳纳米材料，而且还提供了适用于软机器人和智能设备的高性能电化学致动器。

更新日期：2020-02-12

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