A flexible, electrochromic, rechargeable Zn-ion battery based on actiniae-like self-doped polyaniline cathode. Issue 25 (19th June 2020)

• Record Type: Journal Article
• Authors: Wang, Yi; Jiang, Hedong; Zheng, Rongzong; Pan, Jianbo; Niu, Junlong; Zou, Xinlei; Jia, Chunyang
• Is Part Of: Journal of materials chemistry. Volume 8:Issue 25(2020)
• Page Start: 12799
• Page End: 12809
• Publication Date: 2020-06-19
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d0ta04203j
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : A flexible, electrochromic, rechargeable Zn-ion battery, with a monitoring function of the energy storage according to color variation, has been prepared and characterized. Abstract : Flexible/wearable electrochromic zinc-ion battery (EC-ZIB) is considered to be promising smart multifunctional energy storage devices that monitor energy storage on the basis of their color variation. Herein, a self-doped PANI (SPANI) electrode has been prepared by a facile electrochemical copolymerization process. The prepared SPANI film exhibits a novel actiniae-like morphology, which is beneficial for electrolyte infiltration due to short ion diffusion pathways and fast electrochemical kinetics that ensure enhanced specific capacity. In a full all-in-one EC-ZIB device, the SPANI cathode provides a high specific capacitance of 180.5 mA h g −1 at 0.5 A g −1, excellent rate capability of 75.3% capacity retention even at a 20-fold current-density increase. The EC-ZIB possesses high energy and power densities (181.1 W h kg −1 @ 501.8 W kg −1 and 124.7 W h kg −1 @ 9148.6 W kg −1 ). At the same time, another positive is that the EC-ZIB has excellent electrochromic properties (light yellow, green and dark green) from 0.5 to 1.6 V. Therefore, its energy storage can be conveniently monitored according to color variation. The EC-ZIB efficiently combines multiple smart features, promoting the development of flexible intelligent energy storage devices.