Electrochromic Battery Charges in Seconds

  • Author: Angewandte Chemie International Edition
  • Published Date: 20 June 2016
  • Source / Publisher: Angewandte Chemie International Edition/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
thumbnail image: Electrochromic Battery Charges in Seconds

Batteries are key components of portable electric devices. Electrochromic batteries enable the direct readout of a battery's energy levels through a real-time color change. However, the field is still rather young and many unsolved problems exist, such as a low energy storage capacity and a time-consuming charging process.


Zhigang Zhao, Suzhou Institute of Nano-Tech and Nano-Bionics, China, and colleagues have successfully developed a high-capacity electrochromic battery. Two common materials, aluminum metal and tungsten oxide (W18O49), were selected to construct the electrochromic battery. The device shows many advantages over its traditional counterparts, including a distinguishable color change corresponding to different charge levels.


The electrochromic battery also exhibits a high capacity, as well as fast charging within 8 seconds after the addition of a small amount of hydrogen peroxide. This study may serve as a starting point for the future rational design of new high-performance electrochromic batteries.


 

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