Durable and Water-Floatable Ionic Polymer Actuator with Hydrophobic and Asymmetrically Laser-Scribed Reduced Graphene Oxide Paper Electrodes

被引:207
作者
Kim, Jaehwan [1 ]
Jeon, Jin-Han [1 ]
Kim, Hyun-Jun [1 ]
Lim, Hyuneui [2 ]
Oh, Il-Kwon [1 ]
机构
[1] Korea Adv Inst Sci & Technol, Div Ocean Syst Engn, Sch Mech Aerosp & Syst Engn, Graphene Res Ctr,KAIST Inst NanoCentury, Taejon 305701, South Korea
[2] KIMM, Dept Nat Inspired Nanoconvergence Syst, Taejon 305343, South Korea
基金
新加坡国家研究基金会;
关键词
laser-scribed reduced graphene oxide paper; actuator; durability; hydrophobicity; liquid permeability; METAL COMPOSITES; CARBON; FILMS; SUPERCAPACITOR; CONDUCTIVITY; PERFORMANCE; REDUCTION;
D O I
10.1021/nn500283q
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Ionic polymer actuators driven by electrical stimuli have been widely investigated for use in practical applications such as bioinspired robots, sensors, and biomedical devices. However, conventional ionic polymer metal composite actuators have a serious drawback of poor durability under long-term actuation in open air, mainly because of the leakage of the inner electrolyte and hydrated cations through cracks in the metallic electrodes. Here, we developed a highly durable and water-floatable ionic polymer artificial muscle by employing hydrophobic and asymmetrically laser-scribed reduced graphene oxide paper electrodes (HLrGOP). The highly conductive, flexible, and cost-effective HLrGOP electrodes have asymmetrically smooth hydrophobic outer and rough inner surfaces, resulting in liquid-impermeable and water-floatable functionalities and strong bonding between an ionic polymer and the electrodes. More interestingly, the HLrGOP electrode, which has a unique functionality to prevent the leakage of the vaporized or liquid electrolyte and mobile ions during electrical stimuli, greatly contributes to an exceptionally durable ionic polymer graphene composite actuator that is a prerequisite for practical applications in active biomedical devices, biomimetic robots, touch-feedback haptic systems, and flexible soft electronics.
引用
收藏
页码:2986 / 2997
页数:12
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