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000901865 1001_ $$0P:(DE-HGF)0$$aYao, Mingyue$$b0
000901865 245__ $$aA Highly Robust Ionotronic Fiber with Unprecedented Mechanomodulation of Ionic Conduction
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000901865 520__ $$aStretchable ionic conductors are appealing for tissue-like soft electronics, yet suffer from a tardy mechanoelectric response due to their poor modulation of ionic conduction arising from intrinsic homogeneous soft chain network. Here, a highly robust ionotronic fiber is designed by synergizing ionic liquid and liquid crystal elastomer with alternate rigid mesogen units and soft chain spacers, which shows an unprecedented strain-induced ionic conductivity boost (≈103 times enhanced as stretched to 2000% strain). Such a surprisingly high enhancement is attributed to the formation of microphase-separated low-tortuosity ion-conducting nanochannels guided by strain-induced emergence of aligned smectic mesophases, thus allowing for ultrafast ion transport that resembles the role of “swimming lanes.” Intriguingly, the boosting conductivity even reverses Pouillet's Law-dictated resistance increase at certain strains, leading to unique waveform-discernible strain sensing. Moreover, the fiber retains thermal actuation properties with a maximum of 70% strain changes upon heating, and enables integrated self-perception and actuation. The findings offer a promising molecular engineering route to mechanically modulate the ion transport behavior of ionic conductors toward advanced ionotronic applications.
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000901865 65017 $$0V:(DE-MLZ)GC-1603-2016$$2V:(DE-HGF)$$aChemical Reactions and Advanced Materials$$x0
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000901865 7001_ $$0P:(DE-Juel1)151161$$aWu, Baohu$$b1$$ufzj
000901865 7001_ $$0P:(DE-HGF)0$$aFeng, Xunda$$b2
000901865 7001_ $$0P:(DE-HGF)0$$aSun, Shengtong$$b3$$eCorresponding author
000901865 7001_ $$00000-0001-7235-210X$$aWu, Peiyi$$b4$$eCorresponding author
000901865 773__ $$0PERI:(DE-600)1474949-X$$a10.1002/adma.202103755$$gp. 2103755 -$$n42$$p2103755$$tAdvanced materials$$v33$$x1521-4095$$y2021
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000901865 8564_ $$uhttps://juser.fz-juelich.de/record/901865/files/wu_Advanced%20Materials%20-%202021%20-%20Yao%20-%20A%20Highly%20Robust%20Ionotronic%20Fiber%20with%20Unprecedented%20Mechanomodulation%20of%20Ionic%20Conduction-Final%20draft.pdf$$yPublished on 2021-09-03. Available in OpenAccess from 2022-09-03.
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