Nanocomposite Turns Movement into Energy

  • Author: ChemistryViews.org
  • Published: 23 November 2016
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
  • Source / Publisher: Advanced Materials/Wiley-VCH
thumbnail image: Nanocomposite Turns Movement into Energy

Wearable electronic devices require materials that are flexible and lightweight. This is especially challenging for the devices' energy sources. Triboelectric nanogenerators (TENGs) are one approach to solving this problem. They can convert mechanical movement into an electrostatic energy potential between two materials. The need for packing two materials in close contact can make miniaturization of such devices difficult, however.


Zhong Lin Wang, Guang Zhu, Beijing Institute of Nanoenergy and Nanosystems, China, and colleagues have developed a stretchable porous nanocomposite that combines two materials in one spongelike structure, where each cavity in the "sponge" serves as a TENG unit. The team used sodium chloride powder as a sacrificial template, which they combined with multiwalled carbon nanotubes (CNTs) and uncured polydimethylsiloxane (PDMS). After curing the PDMS polymer, the sodium chloride was dissolved in water, leaving cavities that create the desired porous structure (pictured).


When the elastic material is subjected to mechanical stress, such as compression, bending, or twisting, the deformation causes contact electrification between the carbon nanotubes and the polymer matrix, and electrons flow through the network of CNTs. The team tested the material inside a shoe's insole, and it generated enough electricity during walking to power commercial light-emitting diodes (LEDs).


 

Article Views: 1359

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more


CONNECT:

ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter


A product of ChemPubSoc Europe (16 European Chemical Societies)and Wiley-VCH