Transparent lithium-ion batteries

Y. Yang, S. Jeong, L. Hu, H. Wu, S. W. Lee, Y. Cui

Research output: Contribution to journalArticlepeer-review

233 Scopus citations


Transparent devices have recently attracted substantial attention. Various applications have been demonstrated, including displays, touch screens, and solar cells; however, transparent batteries, a key component in fully integrated transparent devices, have not yet been reported. As battery electrode materials are not transparent and have to be thick enough to store energy, the traditional approach of using thin films for transparent devices is not suitable. Here we demonstrate a grid-structured electrode to solve this dilemma, which is fabricated by a microfluidics-assisted method. The feature dimension in the electrode is below the resolution limit of human eyes, and, thus, the electrode appears transparent. Moreover, by aligning multiple electrodes together, the amount of energy stored increases readily without sacrificing the transparency. This results in a battery with energy density of 10 Wh/L at a transparency of 60%. The device is also flexible, further broadening their potential applications. The transparent device configuration also allows in situ Raman study of fundamental electrochemical reactions in batteries.
Original languageEnglish (US)
Pages (from-to)13013-13018
Number of pages6
JournalProceedings of the National Academy of Sciences
Issue number32
StatePublished - Jul 25 2011
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUS-l1-001-12
Acknowledgements: We thank Jianbin Wang and Yu Lin for helpful discussions. We acknowledge Wenshan Cai for drawings. We thank Sy Bohy for viscosity measurements. Karim Zaghib (Hydro-Quebec, Varennes, Canada) is acknowledged for providing Li4Ti5O12 samples. Y.Y. acknowledges support from a Stanford Graduate Fellowship. S.J. acknowledges support from the Korea Foundation for Advanced Studies. S. W. L. acknowledges support from King Abdullah University of Science and Technology (KAUST). The work is supported by KAUST under Award KUS-l1-001-12.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.


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