方案摘要
方案下载应用领域 | 材料 |
检测样本 | 石墨烯 |
检测项目 | |
参考标准 | 暂无 |
采用立陶宛Ekspla公司的振动和频光谱(SFG)研究了基于高性能石墨炔(graphdiyne)的电化学致动器。
Electrochemical actuators directly converting electrical energy to mechanical energy are
critically important for artificial intelligence. However, their energy transduction efficiency is
always lower than 1.0% because electrode materials lack active units in microstructure, and
their assembly systems can hardly express the intrinsic properties. Here, we report a
molecular-scale active graphdiyne-based electrochemical actuator with a high electromechanical transduction efficiency of up to 6.03%, exceeding that of the best-known piezoelectric ceramic, shape memory alloy and electroactive polymer reported before, and its
energy density (11.5 kJm−3) is comparable to that of mammalian skeletal muscle (~8 kJm−3).
Meanwhile, the actuator remains responsive at frequencies from 0.1 to 30 Hz with excellent
cycling stability over 100,000 cycles. Furthermore, we verify the alkene–alkyne complex
transition effect responsible for the high performance through in situ sum frequency generation spectroscopy. This discovery sheds light on our understanding of actuation
mechanisms and will accelerate development of smart actuators.
在一个双稳湍流涡旋火焰中,对间歇性动态的时间-频率定位
Particle-laden Taylor-Couette流:高阶转变和径向局部波浪涡旋的证据
7根杆束的流体-结构相互作用:用实验数据对比数值模拟
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