An Ultrahigh Energy Density Quasi‐Solid‐State Zinc Ion Microbattery with Excellent Flexibility and Thermostability. Issue 37 (12th September 2019)

• Record Type: Journal Article
• Authors: Shi, Junjie; Wang, Siliang; Chen, Xing; Chen, Zhicheng; Du, Xiaoyu; Ni, Tong; Wang, Qiang; Ruan, Limin; Zeng, Wei; Huang, Zhixiang
• Is Part Of: Advanced energy materials. Volume 9:Issue 37(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-09-12
• Subjects: flexibility -- high temperature stability -- quasi‐solid‐state -- ultrahigh energy density -- zinc ion microbatteries; Energy harvesting -- Materials -- Periodicals; Energy conversion -- Materials -- Periodicals; Energy storage -- Materials -- Periodicals; Photovoltaics -- Periodicals; Fuel cells -- Periodicals; Thermoelectric materials -- Periodicals; 621.31
• DOI: 10.1002/aenm.201901957
• Languages: English
• ISSNs: 1614-6832

Abstract

Abstract: The rapid development of smart wearable and integrated electronic products has urgently increased the requirement for high‐performance microbatteries. Although few lithium ion microbatteries based on organic electrolytes have been reported so far, the problems, such as undesirable energy density, poor flexibility, inflammability, volatility toxicity, and high cost restrict their practical applications in the above‐mentioned electronic products. In order to overcome these problems, a low cost quasi‐solid‐state aqueous zinc ion microbattery (ZIMB) assembled by a vanadium dioxide (B)‐multiwalled carbon nanotubes (VO2 (B)‐MWCNTs) cathode, a zinc nanoflakes anode, and a zinc trifluoromethanesulfonate‐polyvinyl alcohol (Zn(CF3 SO3 )2 ‐PVA) hydrogel electrolyte is exploited. As expected, the ZIMB exhibits excellent electrochemical performance, e.g., a high capacity of 314.7 µAh cm −2, an ultrahigh energy density of 188.8 µWh cm −2, and a high power density of 0.61 mW cm −2 . Furthermore, the ZIMB also shows high flexibility and excellent high temperature stability: the capacity has no obvious decay when the bending angle is up to 150° and the temperature reaches 100 °C. The ZIMB provides a way to develop next‐generation miniature energy storage devices with high performance. Abstract : An ultrahigh energy density quasi‐solid‐state zinc ion microbattery with excellent flexibility and thermostability based on a vanadium dioxide (B)‐multiwalled carbon nanotubes (VO2 (B)‐MWCNTs) cathode, a zinc nanoflakes anode, and a zinc trifluoromethanesulfonate‐polyvinyl alcohol (Zn(CF3 SO3 )2 ‐PVA) hydrogel electrolyte is successfully realized.