Self-Healing All-in-One Energy Storage for Flexible Self-Powering Ammonia Smartsensors

Energy & Environmental Materials

article

Hongting Ma¹  Fengjuan Lv¹  Liuxue Shen¹  Kaizhou Yang¹  Yu Jiang¹  Junlin Ma¹  Xiaodong Geng¹  Tongrui Sun¹  Yuzhen Pan²  Zhuang Xie³  Mianqi Xue⁴  Nan Zhu¹ 

[1] Zhang Dayu School of Chemistry, Dalian University of Technology;School of Chemical Engineering, Dalian University of Technology;School of Materials Science and Engineering and Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University;Technical Institute of Physics and Chemistry, Chinese Academy of Sciences

关键词: ammonia sensor;    flexible supercapacitor;    hydrogel;    self-healing;    self-power;   

DOI  :  10.1002/eem2.12227

来源: Wiley

【 摘 要 】

Self-healable and flexible all-in-one self-powering smartsensing devices have recently attracted great attention. Herein, a flexible all-in-one solid-state electronic system of polyvinyl alcohol (PVA) hydrogel-based supercapacitors for self-powering ammonia smartsensors has been fabricated. Self-healing supercapacitors are prepared by integrating polypyrrole (PPy) and boron cross-linked PVA/KCl hydrogel as a sandwich configuration, exhibiting large specific capacitance of 244.81 mF cm −2 at 0.47 mA cm −2 , and good charging/discharging stability of 2000 cycles, while ammonia sensors are realized by a SnO 2 /PPy-modified conductive PVA hydrogel film, demonstrating an excellent sensing behavior toward NH 3 vapor under 50 ppb–500 ppm. As a result, self-healing supercapacitors could well store energy and then self-power sensing unit for remotely real-time detection via a smartphone, acquiring high flexibility of energy-sensing system. With attractive biocompatibility and self-healing performance toward various environment, this all-in-one flexible energy-smartsensor system would pave the way to novel fabrication process in realization of wearable self-healing smart devices.

【 授权许可】

Unknown