Chem. J. Chinese Universities ›› 2026, Vol. 47 ›› Issue (3): 20250241.doi: 10.7503/cjcu20250241

• Polymer Chemistry • Previous Articles     Next Articles

Preparation and Electrochemical Properties of Flower-like Polyaniline Micro-nano Structure

ZHANG Yu1, CHEN Long1, CHEN Ao1, SHENG Quankang1, WANG Chuangui2, HU Siquan1, CHEN Shaoyun1(), HU Chenglong1()   

  1. 1.Key Laboratory of Flexible Optoelectronic Materials and Technology,Ministry of Education,School of Optoelectronic Materials & Technology,Jianghan University,Wuhan 430056,China
    2.Zhongnan Rubber Group Co. ,Ltd. ,Yichang 443001,China
  • Received:2025-08-31 Online:2026-03-10 Published:2025-11-21
  • Contact: CHEN Shaoyun, HU Chenglong E-mail:cescsy@jhun.edu.cn;ceshcl@jhun.edu.cn
  • Supported by:
    the Sustainability Chemical Engineering and Technology Discipline Innovation Intelligence Base of Ministry of Education, China(D25004)

Abstract:

Micro-nano structured electrodes have high specific surface area, controllable morphology and unique size-dependent characteristics, which can provide effective active reaction sites, and improve charge transfer and storage during charge/discharge process, thereby achieving high electrochemical performance in supercapacitors. In this paper, the aniline monomer was dissolved in a weakly acidic p-toluenesulfonic acid/ethylene glycol water mixed solvent, and the aniline monomer was oxidized and polymerized into a oligomer nanosheet template in an ice water bath. And then, the oligomer template was dispersed into the sulfuric acid aqueous solution containing aniline monomer, and ammonium persulfate was used as a water-soluble initiator to further initiate the polymerization reaction, then the flower-like polyaniline(PANI) with nano-hierarchical structure was successfully prepared. Using conductive carbon cloth as the supporting substrate, flower-like PANI was prepared for electrode materials in supercapacitors, and its electrochemical properties were studied. The experimental results showed that the specific capacitance of the flower-like PANI micro-nano structure electrode was about 433 F/g at a current density of 1 A/g. The specific capacitance was only decreased by 46.8% when the current density increased from 1 A/g to 10 A /g. The specific capacitance loss was only 48.5% after 2000 charge-discharge cycles at 10 A/g. The single device prepared with flower-like PANI had a maximum energy density of approximately 20.65 Wh/kg at a power density of 550 W/kg.

Key words: Polyaniline, Flower-like micro-nano structure, Electrode material, Electrochemical performance, Supercapacitor

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