Highly Sensitive Pseudocapacitive Iontronic Pressure Sensor with Broad Sensing Range

• 作者: Libo Gao Meng Wang Weidong Wang Hongcheng Xu Yuejiao Wang Haitao Zhao Ke Cao Dandan Xu Lei Li
• 来源期刊: 纳微快报（英文版）
• 年，卷（期）: 2021,（9）
• 页码范围: 339-352
• 页数: 14页
• 语种: 英文

摘要

Flexible pressure sensors are unprecedentedly studied on monitoring human physical activities and robotics.Simultane-ously,improving the response sensitivity and sensing range of flexible pressure sensors is a great challenge,which hinders the devices' practical application.Targeting this obstacle,we developed a Ti3C2Tx-derived iontronic pres-sure sensor (TIPS) by taking the advantages of the high intercalation pseudocapacitance under high pressure and rationally designed structural configuration.TIPS achieved an ultrahigh sen-sitivity (Smin ＞ 200 kPa-1,Smax ＞ 45,000 kPa-1)in a broad sensing range of over 1.4 MPa and low limit of detection of 20 Pa as well as stable long-term working durability for 10,000 cycles.The practical application of TIPS in physical activity monitoring and flexible robot manifested its versatile potential.This study provides a demonstration for exploring pseudocapacitive materials for building flexible iontronic sensors with ultrahigh sensitivity and sensing range to advance the development of high-performance wearable electronics.