Issue 11, 2012
From the journal:

Energy & Environmental Science

A self-powered electrochromic device driven by a nanogenerator†

Xiaohong Yang,‡ab   Guang Zhu,‡a   Sihong Wang,a   Rui Zhang,a   Long Lin,a   Wenzhou Wua  and  Zhong Lin Wang*a  

* Corresponding authors

a School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA
E-mail: zlwang@gatech.edu

b School of Physical Science and Electronic Engineering, Chongqing Normal University, Chongqing 401331, China

Abstract

Electrochromic (EC) devices are capable of reversibly changing optical properties upon charge injection and extraction driven by an externally applied voltage. A nanogenerator (NG) is a device that converts mechanical energy into electricity. This paper demonstrates a self-powered EC device driven by an NG. An average visible optical modulation (ΔTvis) as large as 15.3% was obtained, with electrochromic response time (ERT) and coloration efficiency (CE) of 10 seconds and 58.7 cm2 C−1, respectively. Such a performance is comparable to an EC when powered by a hardwired DC power. This study indicates that the self-powered electrochromic system can be a candidate for monochrome displays or electronic billboards.

Graphical abstract: A self-powered electrochromic device driven by a nanogenerator

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Article information

DOI
https://doi.org/10.1039/C2EE23194H
Article type
Communication
Submitted
16 Aug 2012
Accepted
07 Sep 2012
First published
07 Sep 2012

Energy Environ. Sci., 2012,5, 9462-9466

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A self-powered electrochromic device driven by a nanogenerator

X. Yang, G. Zhu, S. Wang, R. Zhang, L. Lin, W. Wu and Z. L. Wang, Energy Environ. Sci., 2012, 5, 9462 DOI: 10.1039/C2EE23194H

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