Strain‐Driven Auto‐Detachable Patterning of Flexible Electrodes

Strain‐Driven Auto‐Detachable Patterning of Flexible Electrodes

Advanced Materials

10.1002/adma.202202877

http://dx.doi.org/10.1002/adma.202202877

Zhisheng Lv, Changxian Wang, Changjin Wan, Renheng Wang, Xiangyu Dai, Jiaqi Wei, Huarong Xia, Wenlong Li, Wei Zhang, Shengkai Cao, Feilong Zhang, Haiyue Yang, Xian Jun Loh, Xiaodong Chen

Mechanical Engineering, General Materials Science, Mechanics of Materials

31 May 2022

Lv, Z., Wang, C., Wan, C., Wang, R., Dai, X., Wei, J., Xia, H., Li, W., Zhang, W., Cao, S., Zhang, F., Yang, H., Loh, X. J., & Chen, X. (2022). Strain‐Driven Auto‐Detachable Patterning of Flexible Electrodes. Advanced Materials, 34(30), 2202877. Portico. https://doi.org/10.1002/adma.202202877

Flexible electrodes that are multilayer, multimaterial, and conformal are pivotal for multifunctional wearable electronics. Traditional electronic circuits manufacturing requires substrate-supported transfer printing, which limits their multilayer integrity and device conformability on arbitrary surfaces. Herein, a “shrinkage-assisted patterning by evaporation” (SHAPE) method is reported, by employing evaporation-induced interfacial strain mismatch, to fabricate auto-detachable, freestanding, and patternable electrodes. The SHAPE method utilizes vacuum-filtration of polyaniline/bacterial cellulose (PANI/BC) ink through a masked filtration membrane to print high-resolution, patterned, and multilayer electrodes. The strong interlayer hydrogen bonding ensures robust multilayer integrity, while the controllable evaporative shrinking property of PANI/BC induces mismatch between the strains of the electrode and filtration membrane at the interface and thus autodetachment of electrodes. Notably, a 500-layer substrateless micro-supercapacitor fabricated using the SHAPE method exhibits an energy density of 350 mWh cm−2 at a power density of 40 mW cm−2, 100 times higher than reported substrate-confined counterparts. Moreover, a digital circuit fabricated using the SHAPE method functions stably on a deformed glove, highlighting the broad wearable applications of the SHAPE method.

Publisher Copyright

This research / project is supported by the Agency for Science, Technology and Research (A*STAR) - AME Programmatic
Grant Reference no. : A18A1b0045

This is the peer reviewed version of the following article: Lv, Z., Wang, C., Wan, C., Wang, R., Dai, X., Wei, J., Xia, H., Li, W., Zhang, W., Cao, S., Zhang, F., Yang, H., Loh, X. J., & Chen, X. (2022). Strain‐Driven Auto‐Detachable Patterning of Flexible Electrodes. Advanced Materials, 34(30), 2202877. Portico. https://doi.org/10.1002/adma.202202877, which has been published in final form atdoi.org/10.1002/adma.202202877. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.

https://oar.a-star.edu.sg/communities-collections/articles/18685

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