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http://hdl.handle.net/10397/77698
Title: | High-performance graphdiyne-based electrochemical actuators | Authors: | Lu, C Yang, Y Wang, J Fu, R Zhao, X Zhao, L Ming, Y Hu, Y Lin, H Tao, X Li, Y Chen, W |
Issue Date: | 2018 | Source: | Nature communications, 21 2018, v. 9, no. 1, 752, p. 1-11 | Abstract: | 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 electro-mechanical 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 kJ m-3) is comparable to that of mammalian skeletal muscle (~8 kJ m-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. | Publisher: | Nature Publishing Group | Journal: | Nature communications | EISSN: | 2041-1723 | DOI: | 10.1038/s41467-018-03095-1 | Rights: | Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. © The Author(s) 2018 The following publication Lu, C., Yang, Y., Wang, J. et al. High-performance graphdiyne-based electrochemical actuators. Nat Commun 9, 752 (2018) is available at https://dx.doi.org/10.1038/s41467-018-03095-1 |
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