材料科学
深共晶溶剂
离子液体
离子电导率
数码产品
铸造
化学工程
柔性电子器件
离子键合
纳米技术
共晶体系
复合材料
化学
离子
电极
有机化学
电解质
合金
物理化学
工程类
催化作用
作者
Nan Li,Liyuan Qiu,Xingxiang Ji,Wei Chen
标识
DOI:10.1021/acs.chemmater.3c01761
摘要
Conductive ionogels had demonstrated significant prospects in the field of flexible electronics. Nonetheless, it remains a big challenge to develop ionogels, by using degradable and recyclable components, with multiple functional properties. Herein, inspired by a traditional dough figurine, a novel type of ionic dough assembled from flour, water, and choline chloride/glycerol deep eutectic solvent was engineered to replace non-recyclable and non-degradable components of present ionogels. The obtained ionic dough exhibited superior conductive performance (conductivity of 3.7 mS·cm–1), long-lasting moisture retention (80% weight retention after 24 days), reliable self-healing ability (the healing efficiency was up to 95%), and excellent antibacterial and biodegradable (entirely degraded within 30 days) properties. Wearable strain sensors based on the ionic dough can accurately detect both large and subtle human activities with high strain sensitivity (gauge factor = 6.2) and durable stability under a wide working temperature range (−20 to 80 °C). Notably, the ionic dough can be further applied in green batteries and luminescent display screens of electroluminescent devices. Therefore, it was envisioned that the effective and innovative design strategy for fabricating conductive ionogels, using natural flour components, with multiple functionalities would provide wide applications of flexible wearable devices.
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