Nano Energy ( IF 17.6 ) Pub Date : 2021-10-07 , DOI: 10.1016/j.nanoen.2021.106611 Lingyun Wang 1 , Yu Wang 2 , Su Yang 3 , Xiaoming Tao 3 , Yunlong Zi 4 , Walid A. Daoud 1
Intrinsically stretchable and transparent ionic conductors are of great interest due to their promising applications in flexible and wearable electronics. However, hydrogels/organogels based devices suffer from instability due to liquid evaporation or leakage. Herein, we present a solvent-free ionic elastomer (IE), featuring high transparency (>92%), stretchability (300%), ionic conductivity (0.07 mS/cm), adhesiveness (61 N/m), thermal stability (300 °C), and negligible mechanical hysteresis, which endows implementation capacity in multifunctional stretchable electronics. The IE-based robust strain sensors (both resistive and capacitive) show linear sensitivities in the range of 0–150% strain and long-term stability. Moreover, a reversible wide-range temperature sensor is presented showing remarkable sensitivity in the range of 30–55 °C sustained under 50% stretching. The temperature-strain effect on the IE-based sensor is insignificant, ensuring an accurate sensing capability. Thanks to its self-adhesiveness, a fully integrated, stretchable motion energy harvester as well as a skin-like thin triboelectric sensor array using IE as the electrode are further designed to demonstrate efficient human motion energy harvesting with a peak power density of 3.6 W/m2 and self-powered tactile sensing. The results provide strategies towards potential applications of developed IE in healthcare monitoring systems, biomechanical energy harvesting, soft robotics, and human-machine interfaces.
中文翻译:
用于多功能可拉伸电子产品的无溶剂粘性离子弹性体
本质上可拉伸和透明的离子导体因其在柔性和可穿戴电子产品中的应用前景而备受关注。然而,基于水凝胶/有机凝胶的装置由于液体蒸发或泄漏而存在不稳定性。在此,我们提出了一种无溶剂离子弹性体 (IE),具有高透明度 (>92%)、拉伸性 (300%)、离子导电性 (0.07 mS/cm)、粘合性 (61 N/m)、热稳定性 (300 °C),以及可忽略不计的机械滞后,这赋予了多功能可拉伸电子产品的实现能力。基于 IE 的稳健应变传感器(电阻式和电容式)显示出 0-150% 应变范围内的线性灵敏度和长期稳定性。而且,提出了一种可逆的宽范围温度传感器,在 50% 拉伸下持续 30-55°C 的范围内显示出显着的灵敏度。温度-应变对基于 IE 的传感器的影响微不足道,确保了准确的传感能力。由于其自粘性,完全集成的、可拉伸的运动能量收集器以及使用 IE 作为电极的皮肤状薄摩擦电传感器阵列被进一步设计以展示有效的人体运动能量收集,峰值功率密度为 3.6 W/米2和自供电触觉传感。结果为开发的 IE 在医疗监测系统、生物力学能量收集、软机器人和人机界面中的潜在应用提供了策略。