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 

机构地区：[1]School of Mechano-Electronic Engineering,Xidian University,Xian 710071,Shaanxi,P.R.China [2]CityU-Xidian Joint Laboratory of Micro/Nano-Manufacturing,Shenzhen 518057,P.R.China [3]Department of Mechanical Engineering,City University of Hong Kong,Kowloon 999077,Hong Kong SAR,P.R.China [4]Materials Interfaces Center,Shenzhen Institutes of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518055,Guangdong,P.R.China [5]State Key Laboratory for Mechanical Behavior of Materials,Xian Jiaotong University,No.28,Xianning West Road,Xian 710049,Shaanxi,P.R.China

出　　处：《Nano-Micro Letters》2021年第9期209-222,共14页纳微快报（英文版）

基　　金：These authors would like to acknowledge the financial support of the project from the National Natural Science Foundation of China(No.61904141);the funding of Natural Science Foundation of Shaanxi Province(No.2020JQ-295);China Postdoctoral Science Foundation(2020M673340);the Fundamental Research Funds for the Central Universities(JB210407);the Key Research and Development Program of Shaanxi(Program No.2020GY-252;No.2021GY-277);National Key Laboratory of Science and Technology on Vacuum Technology and Physics(HTKJ2019KL510007).

摘　　要：Flexible 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 Ti_(3)C_(2)T_(x)-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 sen-sitivity(S_(min)>200 kPa^(−1),S_(max)>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.

关 键 词：Iontronic sensor Flexible electronics Pressure sensor PSEUDOCAPACITANCE Ti_(3)C_(2)T_(x)MXene 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]