Supercapacitance Property Study of 3D Open-Framework Prussian Blue in Neutral Electrolyte

Author:

Pan Wei1,Zhang Mu1,Xue Dongfeng2,Sun Xudong3

Affiliation:

1. Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China

2. State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China

3. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China

Abstract

Prussian blue is a kind compound with a consistent three-dimensional structure. Here we characterized a family of Prussian blue which could have reversible insertion of cations into materials. This study details comprehensive electrochemical property information about Prussian blue electrode materials and provides a method to evaluate a series of supercapacitor materials. These hexacyanoferrates were synthesized by one step precipitation method which was low cost. They exhibited extremely different apparent morphology in the scanning electron microscope (SEM) image. And then these Prussian blue electrode materials were evaluated on room temperature for their electrochemical properties. They show a different specific capacitance and redox voltage. The kinetic study reveals reasons that influence the electrochemical properties of these active materials. First, the particle morphology has a great effect on it; Second, transition metal cations modify the C≡N bond connected with it and then influence the bond connected with the Fe atom.

Publisher

American Scientific Publishers

Subject

General Materials Science

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