• 文献标题:   Multifunctional Mesoporous Polyaniline/Graphene Nanosheets for Flexible Planar Integrated Microsystem of Zinc Ion Microbattery and Gas Sensor
  • 文献类型:   Article
  • 作  者:   WANG X, QIN JQ, HU Q, DAS P, WEN PC, ZHENG SH, ZHOU F, FENG L, WU ZS
  • 作者关键词:   gas sensor, integrated microsystem, mesoporous nanosheet, zinc anode, zinc ion microbatterie
  • 出版物名称:   SMALL
  • ISSN:   1613-6810 EI 1613-6829
  • 通讯作者地址:  
  • 被引频次:   8
  • DOI:   10.1002/smll.202200678 EA JUN 2022
  • 出版年:   2022

▎ 摘  要

The prosperity of smart portable microdevices urgently requires an advanced integrated microsystem equipped with cost-effective safe microbatteries and ultra-stable sensitive sensors. However, the practical application of smart microdevices is limited by complex active materials with single function. Here, the two-dimensional (2D) mesoporous nanosheets of polyaniline decorated on graphene with large specific surface area of 141 m(2) g(-1), ample active sites, comparable conductivity, and ordered mesopores of 18 nm for a new-type co-planar integrated microsystem of zinc ion microbattery and gas sensor are developed. These unique triple-function mesoporous nanosheets are well proved for dendrite-free zinc anode with long cyclability (>500 h) and small overpotential (48 mV), a high performance cathode of zinc ion microbattery with outstanding volumetric capacity of 78 mAh cm(-3) outperforming their counterparts reported, and a highly sensitive gas sensor with a resistance response (Delta R/R-0%) of 118% for 20 ppm NH3. Moreover, the co-planar battery-sensor integrated microsystem exhibits superior mechanical stability and smart integration. Therefore, this work will open many opportunities to develop multifunctional 2D mesoporous materials for high performance smart integrated microsystems.