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Study on In Situ Preparation and Performance of PPy@FeOOH/CFs Paper-based Flexible Electrode
Received:January 03, 2021  
DOI：10.11980/j.issn.0254-508X.2021.05.001
Key Words:paper-based electrode  in situ deposition  FeOOH  polypyrrole
Fund Project:国家自然科学基金资助项目（编号：31770620）。
Author NameAffiliationPostcode
DOU Tianyou Key Lab of Bio-based Materials Science and Technology of Ministry of Education，Northeast Forestry University，Harbin， Heilongjiang Province，150040 150040
QIAN Xueren Key Lab of Bio-based Materials Science and Technology of Ministry of Education，Northeast Forestry University，Harbin， Heilongjiang Province，150040 150040
AN Xianhui Key Lab of Bio-based Materials Science and Technology of Ministry of Education，Northeast Forestry University，Harbin， Heilongjiang Province，150040 150040
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Abstract:Using cellulose fibers （CFs） as the substrate， PPy@FeOOH/CFs （PFC） flexible paper-based electrode material was prepared by two-step in situ deposition of FeOOH and polypyrrole （PPy） successively on the CFs substrate. The paper-based electrode was characterized by SEM， XRD， FT-IR and XPS， which proved PFC was successfully preparated. The electrochemical performances of the PFC paper-based electrode in 0.6 mol/L H2SO4 aqueous solution were measured by Cyclic voltammetry （CV）， galvanostatic charge-discharge （GCD） and electrochemical impedance spectroscopy （EIS）. The results showed that PFC had faster migration of electrons and diffusion of ions as well as higher electrochemical energy storage performance compared with PPy@CFs. When the current density was 1.0 A/g， the specific capacitance of PFC prepared with 3 mmol FeSO4·7H2O as the iron source was 357.8 F/g， which was higher than 219.3 F/g of PPy@CFs， indicating PFC-3 had better electrochemical performance and greater application potential in flexible energy storage devices. In addition， the mass ratio capacitance of PFC-3 at 4.0 A/g current density was 47.47% of 0.5 A/g， while PPy@CFs was only 29.57% of 0.5 A/g at 4.0 A/g current density. PFC-3 showed better electrochemilal performance and application potential.
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