3 years ago

Electrochemically Powered, Energy-Conserving Carbon Nanotube Artificial Muscles

Electrochemically Powered, Energy-Conserving Carbon Nanotube Artificial Muscles
Xavier Lepró, Na Li, Raquel Ovalle-Robles, Keon Jung Kim, Carter S. Haines, Jae Ah Lee, Ray H. Baughman, Seon Jeong Kim
While artificial muscle yarns and fibers are potentially important for many applications, the combination of large strokes, high gravimetric work capacities, short cycle times, and high efficiencies are not realized for these fibers. This paper demonstrates here electrochemically powered carbon nanotube yarn muscles that provide tensile contraction as high as 16.5%, which is 12.7 times higher than previously obtained. These electrochemical muscles can deliver a contractile energy conversion efficiency of 5.4%, which is 4.1 times higher than reported for any organic-material-based artificial muscle. All-solid-state parallel muscles and braided muscles, which do not require a liquid electrolyte, provide tensile contractions of 11.6% and 5%, respectively. These artificial muscles might eventually be deployed for a host of applications, from robotics to perhaps even implantable medical devices. Electrochemically driven all-solid-state artificial muscle actuates by the migration of ions from the surrounding electrolyte into the electrochemical double layer of two-ply coiled carbon nanotube yarn. Tensile stroke and contractile work capacity are −11.6% and 1.12 J g−1, respectively, which is ≈30 times the work capacity of human skeletal muscle.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/adma.201700870

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.