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Stable and High-Performance Polyaniline/V2CTx MXene Composite Electrochromic Films Prepared by One-Pot
Dan Zhou1, Qihuang Deng1, Liping Yang2
1Chongqing Key Laboratory of Extraordinary Bond Engineering and Advanced Materials Technology, College of Materials Science and Engineering, Yangtze Normal University, Chongqing 408100, China.
Polymers
|November 27, 2025
Summary
Researchers developed novel porous polyaniline (PANI)/vanadium carbide MXene (PANI/V2CTx) composite films using a simple electrodeposition method. These PANI/V2CTx films show enhanced electrochromic performance compared to pure PANI.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Polyaniline (PANI) is a conductive polymer with electrochromic properties.
- Improving the electrochromic performance of PANI is crucial for advanced applications.
- Vanadium carbide MXene (V2CTx) offers unique 2D layered structures with potential for material enhancement.
Purpose of the Study:
- To prepare porous PANI/V2CTx composite electrochromic films.
- To investigate the effect of V2CTx on the morphology, structure, and electrochromic properties of PANI.
- To demonstrate a facile and low-cost method for producing advanced electrochromic materials.
Main Methods:
- One-pot electrodeposition from an aqueous solution of aniline and V2CTx.
- Characterization of film morphology, structure, and electrochemical properties.
- Evaluation of electrochromic performance including optical contrast, switching speed, coloration efficiency, and cycling stability.
Main Results:
- Porous PANI/V2CTx composite films were successfully prepared for the first time.
- The addition of V2CTx significantly altered the morphology and structure compared to pure PANI.
- Optimized composite films exhibited superior electrochromic properties: higher optical contrast, faster switching, improved coloration efficiency, and enhanced cycling stability.
- Improved properties are attributed to the porous morphology and interactions between PANI and V2CTx.
Conclusions:
- The one-pot electrodeposition method is effective for creating PANI/MXene composites.
- Porous PANI/V2CTx composite films demonstrate significantly enhanced electrochromic performance.
- These materials show potential for various applications in electrochromic devices.
