Lattice water removal from nickel–cobalt Prussian blue analogues by polyaniline coating for flexible sodium ion supercapacitor devices. (14th April 2021)

• Record Type: Journal Article
• Authors: Bai, Ruyue; Chen, Pengpeng; Zeng, Shaohua; Zhou, Yifeng; Nie, Wangyan; Xu, Ying
• Is Part Of: International journal of energy research. Volume 45:Number 10(2021)
• Page Start: 14870
• Page End: 14878
• Publication Date: 2021-04-14
• Subjects: lattice water -- polyaniline -- Prussian blue -- supercapacitor; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Power resources -- Research -- Periodicals; 621.042
• DOI: 10.1002/er.6760
• Languages: English
• ISSNs: 0363-907X

Abstract

Summary: A new method to improve the performance of Prussian blue sodium ion supercapacitors by polyaniline coating is presented. The conducting mechanism of polyaniline film facilitates small water molecules transforming between benzene structure and quinone structure of polyaniline, which minimizes lattice water content of NiCo–Prussian blue analogues materials. The polyaniline‐coated NiCo–Prussian blue analogues are loaded on carbon sponge material to assemble flexible supercapacitors. The specific capacity of 118.2 F g −1, energy density of 32 Wh kg −1, and power density of 6.23 kW kg −1 are obtained on NiCoPBA@PANI‐1@CS//AC device, which are much greater than those of NiCoPBA@CS//AC without polyaniline coating. Abstract : A new flexible electrode material based on a NiCoPBA carbon sponge electrode modified with polyaniline is presented. The lattice water molecules in Prussian blue materials are removed by simply polyaniline coating for high conductive networks.