Issue 11, 2012

A self-powered electrochromic device driven by a nanogenerator

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 (Ī”Tvis) as large as 15.3% was obtained, with electrochromic response time (ERT) and coloration efficiency (CE) of 10 seconds and 58.7 cm2 Cāˆ’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

Supplementary files

Article information

Article type
Communication
Submitted
16 Aug 2012
Accepted
07 Sep 2012
First published
07 Sep 2012

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

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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