All-polymer piezo-ionic-electric electronics

Tianpei Xu, Long Jin (), Yong Ao, Jieling Zhang, Yue Sun, Shenglong Wang, Yuanxiao Qu, Longchao Huang, Tao Yang, Weili Deng and Weiqing Yang ()
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Tianpei Xu: Southwest Jiaotong University
Long Jin: Southwest Jiaotong University
Yong Ao: Southwest Jiaotong University
Jieling Zhang: Southwest Jiaotong University
Yue Sun: Southwest Jiaotong University
Shenglong Wang: Southwest Jiaotong University
Yuanxiao Qu: Southwest Jiaotong University
Longchao Huang: Southwest Jiaotong University
Tao Yang: Southwest Jiaotong University
Weili Deng: Southwest Jiaotong University
Weiqing Yang: Southwest Jiaotong University

Nature Communications, 2024, vol. 15, issue 1, 1-11

Abstract: Abstract Piezoelectric electronics possess great potential in flexible sensing and energy harvesting applications. However, they suffer from low electromechanical performance in all-organic piezoelectric systems due to the disordered and weakly-polarized interfaces. Here, we demonstrated an all-polymer piezo-ionic-electric electronics with PVDF/Nafion/PVDF (polyvinylidene difluoride) sandwich structure and regularized ion-electron interfaces. The piezoelectric effect and piezoionic effect mutually couple based on such ion-electron interfaces, endowing this electronics with the unique piezo-ionic-electric working mechanism. Further, owing to the massive interfacial accumulation of ion and electron charges, the electronics obtains a remarkable force-electric coupling enhancement. Experiments show that the electronics presents a high d33 of ~80.70 pC N−1, a pressure sensitivity of 51.50 mV kPa−1 and a maximum peak power of 34.66 mW m−2. It is applicable to be a transducer to light LEDs, and a sensor to detect weak physiological signals or mechanical vibration. This work shows the piezo-ionic-electric electronics as a paradigm of highly-optimized all-polymer piezo-generators.

Date: 2024
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DOI: 10.1038/s41467-024-55177-y

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