• 文献标题:   All VN-graphene architecture derived self-powered wearable sensors for ultrasensitive health monitoring
  • 文献类型:   Article
  • 作  者:   YU LH, YI YY, YAO T, SONG YZ, CHEN YR, LI QC, XIA Z, WEI N, TIAN ZN, NIE BQ, ZHANG L, LIU ZF, SUN JY
  • 作者关键词:   vngraphene architecture, solidstate supercapacitor, pressure sensor, selfpowered wearable sensor, health monitoring
  • 出版物名称:   NANO RESEARCH
  • ISSN:   1998-0124 EI 1998-0000
  • 通讯作者地址:   Soochow Univ
  • 被引频次:   29
  • DOI:   10.1007/s12274-018-2219-1
  • 出版年:   2019

▎ 摘  要

The booming of wearable electronics has nourished the progress on developing multifunctional energy storage systems with versatile flexibility, which enable the continuous and steady power supply even under various deformed states. In this sense, the synergy of flexible energy and electronic devices to construct integrative wearable microsystems is meaningful but remains quite challenging by far. Herein, we devise an innovative supercapacitor/sensor integrative wearable device that is based upon our designed vanadium nitride-graphene (VN-G) architectures. Flexible quasi-solid-state VN-G supercapacitor with ultralight and binder-free features deliver a specific capacitance of similar to 53 Fg(-1) with good cycle stability. On the other hand, VN-G derived pressure sensors fabricated throughout a spray-printing process also manifest favorably high sensitivity (40 kPa(-1) at the range of 2-10 kPa), fast response time (similar to 130 ms), perfect skin conformability, and outstanding stability under static and dynamic pressure conditions. In turn, their complementary unity into a self-powered wearable sensor enables the precise detection of physiological motions ranging from pulse rate to phonetic recognition, holding promise for in-practical health monitoring applications.