Highly Sensitive Pseudocapacitive Iontronic Pressure Sensor with Broad Sensing Range

Nano-Micro Letters

Yuejiao Wang¹  Haitao Zhao²  Libo Gao³  Meng Wang³  Weidong Wang³  Dandan Xu³  Hongcheng Xu³  Ke Cao³  Lei Li⁴ 

[1] Department of Mechanical Engineering, City University of Hong Kong, 999077, Kowloon, Hong Kong SAR, P. R. China;Materials Interfaces Center, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, 518055, Shenzhen, Guangdong, P. R. China;School of Mechano-Electronic Engineering, Xidian University, 710071, Xian, Shaanxi, P. R. China;CityU-Xidian Joint Laboratory of Micro/Nano-Manufacturing, 518057, Shenzhen, P. R. China;State Key Laboratory for Mechanical Behavior of Materials, Xian Jiaotong University, No. 28, Xianning West Road, 710049, Xian, Shaanxi, P. R. China;

关键词: Iontronic sensor;    Flexible electronics;    Pressure sensor;    Pseudocapacitance;    TiCT MXene;   

DOI  :  10.1007/s40820-021-00664-w

来源: Springer

【 摘 要 】

tsThe iontronic pressure sensor achieved an ultrahigh sensitivity (Smin > 200 kPa−1, Smax > 45,000 kPa−1).The iontronic pressure sensor exhibited a broad sensing range of over 1.4 MPa.Pseudocapacitive iontronic pressure sensor using MXene was proposed.ABSTRACTFlexible pressure sensors are unprecedentedly studied on monitoring human physical activities and robotics. Simultaneously, 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 pressure sensor (TIPS) by taking the advantages of the high intercalation pseudocapacitance under high pressure and rationally designed structural configuration. TIPS achieved an ultrahigh sensitivity (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.

【 授权许可】

CC BY