Self-assembled gold nanorime mesh conductors for invisible stretchable supercapacitors

Yan Wang, Shu Gong, Dashen Dong, Yunmeng Zhao, Lim Wei Yap, Qianqian Shi, Tiance An, Yunzhi Ling, George P. Simon, Wenlong Cheng*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

Thin, skin-conformal, transparent and stretchable energy devices are ideal for powering future wearable and implantable electronics. However, it is difficult to achieve such "unfeelable" and "invisible" devices with traditional materials and design methodologies because of the challenge of simultaneously achieving high optical transparency, high electrical conductivity and high mechanical stretchability. Here, we report a two-step nanowire growth approach for fabricating gold nanorime mesh conductors, enabling skin-thin, transparent and stretchable supercapacitors. Solution-state oleylamine-capped 2 nm-thin gold nanowires self-assemble into highly transparent nanomeshes, which then serve as templates for growing highly conductive vertically aligned nanowires. This two-step solution-plus-surface nanowire growth strategy leads to elastic gold nanorime mesh conductors with an optical transparency up to 90.3% at 550 nm, a low sheet resistance as low as 1.7 ± 0.8 Ω sq-1, and a stretchability of over 100% strain. Such elastic conductors are successfully used to construct symmetrical supercapacitors that can simultaneously achieve high areal capacitance and high stretchability, demonstrating the potential to power future bio-integratable electronics.

Original languageEnglish
Pages (from-to)15948-15955
Number of pages8
JournalNanoscale
Volume10
Issue number34
DOIs
StatePublished - 14 Sep 2018
Externally publishedYes

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