Self-Healing, Self-Adhesive and Stable Organohydrogel-Based Stretchable Oxygen Sensor with High Performance at Room Temperature.
Self-Healing, Self-Adhesive and Stable Organohydrogel-Based Stretchable Oxygen Sensor with High Performance at Room Temperature.
复制标题
自修复，自粘附和稳定的有机水凝胶基可拉伸氧传感器，在室温下具有高性能。
DOI：
10.1007/s40820-021-00787-0
复制
发表时间：
2022-01-29
影响因子：
26.6
通讯作者：
Wu J
中科院分区：
文献类型：
--
作者：
Liang Y;Wu Z;Wei Y;Ding Q;Zilberman M;Tao K;Xie X;Wu J
该有机水凝胶氧传感器具有全浓度检测范围（0-100%）、超低检测限（5.7 ppm）、高灵敏度（0.2%/ppm）、优异的选择性、可调响应/恢复速度、良好的线性度和室温操作等特点。氧传感器可以在各种极端环境条件下正常工作，如低温（低于-18 °C）和高温（高于40 °C），干燥（11.3%RH）和潮湿（90.5%RH）环境。提出了一种基于电化学反应的机理来解释离子导电有机水凝胶的氧传感行为。 在线版本包含补充材料，可通过10.1007/s40820-021-00787-0获得。随着5G时代的到来和物联网的兴起，各种传感器受到了前所未有的关注，尤其是医疗领域的可穿戴和可伸缩传感器。在这里，一个可拉伸的，自我修复，自粘，和室温氧传感器具有优异的重复性，全浓度检测范围（0-100%），低理论检测限（5.7 ppm），高灵敏度（0.2%/ppm）、良好的线性、优异的温度、并以聚丙烯酰胺-壳聚糖（PAM-CS）双网络（DN）有机水凝胶作为一种新型的传感材料，制备了具有湿度耐受性的传感器。PAM-CS DN有机水凝胶是由PAM-CS复合水凝胶通过简单的浸泡和溶剂置换转化而来。与原始水凝胶相比，DN有机水凝胶显示出极大增强的机械强度、保湿性、抗冻性和对氧的敏感性。值得注意的是，施加拉伸应变提高了有机水凝胶基氧传感器的灵敏度和响应速度。此外，自愈前后对相同浓度氧气的反应基本相同。重要的是，我们提出了一个电化学反应机制来解释的氧传感器的正电流偏移，并通过合理设计的实验证实了这种传感机制。将有机水凝胶氧传感器用于人体呼吸的实时监测，验证了其实际应用的可行性。这项工作为使用离子导电有机水凝胶制造更可拉伸、可自愈、自粘合和高性能的气体传感器提供了思路。在线版本包含补充材料，可通过10.1007/s40820-021-00787-0获得。
The organohydrogel-based O2 sensor features full concentration detection range (0-100%), ultralow limit of detection (5.7 ppm), high sensitivity (0.2%/ppm), excellent selectivity, tunable response/recovery speeds, good linearity, and room-temperature operation. The oxygen sensor can work normally under various extreme environmental conditions, such as low (below −18 °C) and high (above 40 °C) temperatures, dry (11.3% RH), and humid (90.5% RH) environments. An electrochemical reaction-based mechanism is proposed to elucidate the oxygen sensing behavior of ion-conducting organohydrogel. The online version contains supplementary material available at 10.1007/s40820-021-00787-0. With the advent of the 5G era and the rise of the Internet of Things, various sensors have received unprecedented attention, especially wearable and stretchable sensors in the healthcare field. Here, a stretchable, self-healable, self-adhesive, and room-temperature oxygen sensor with excellent repeatability, a full concentration detection range (0-100%), low theoretical limit of detection (5.7 ppm), high sensitivity (0.2%/ppm), good linearity, excellent temperature, and humidity tolerances is fabricated by using polyacrylamide-chitosan (PAM-CS) double network (DN) organohydrogel as a novel transducing material. The PAM-CS DN organohydrogel is transformed from the PAM-CS composite hydrogel using a facile soaking and solvent replacement strategy. Compared with the pristine hydrogel, the DN organohydrogel displays greatly enhanced mechanical strength, moisture retention, freezing resistance, and sensitivity to oxygen. Notably, applying the tensile strain improves both the sensitivity and response speed of the organohydrogel-based oxygen sensor. Furthermore, the response to the same concentration of oxygen before and after self-healing is basically the same. Importantly, we propose an electrochemical reaction mechanism to explain the positive current shift of the oxygen sensor and corroborate this sensing mechanism through rationally designed experiments. The organohydrogel oxygen sensor is used to monitor human respiration in real-time, verifying the feasibility of its practical application. This work provides ideas for fabricating more stretchable, self-healable, self-adhesive, and high-performance gas sensors using ion-conducting organohydrogels. The online version contains supplementary material available at 10.1007/s40820-021-00787-0.
登录
查看更多内容
影响因子：
26.6
作者：
Agrawal AV;Kumar N;Kumar M
通讯作者：
Kumar M
用于气体传感的二维纳米结构材料
影响因子：
19
作者：
Liu, Xianghong;Ma, Tiantian;Zhang, Jun
通讯作者：
Zhang, Jun
影响因子：
8.4
作者：
Liu, Chunhua;Tai, Huiling;Jiang, Yadong
通讯作者：
Jiang, Yadong
影响因子：
8.9
作者：
Kadimisetty K;Malla S;Rusling JF
通讯作者：
Rusling JF
基于PDMS/Ppy摩擦电气体传感阵列的自供电气体传感器，用于室温下汽车尾气的实时监测
影响因子：
8.1
作者：
He, Haoxuan;Zhang, Mengyang;Xue, Xinyu
通讯作者：
Xue, Xinyu