A self-powered electrochromic device driven by a nanogenerator

Xiaohong Yang, Guang Zhu, Sihong Wang, Rui Zhang, Long Lin, Wenzhou Wu, Zhong Lin Wang

Research output: Journal PublicationArticlepeer-review

116 Citations (Scopus)


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 (ΔT vis) as large as 15.3% was obtained, with electrochromic response time (ERT) and coloration efficiency (CE) of 10 seconds and 58.7 cm 2 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.

Original languageEnglish
Pages (from-to)9462-9466
Number of pages5
JournalEnergy and Environmental Science
Issue number11
Publication statusPublished - Nov 2012
Externally publishedYes

ASJC Scopus subject areas

  • Environmental Chemistry
  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Pollution


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