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Abstract <p>Conducting polyaniline (PANI) and porous carbon fibrous membranes to construct composite electrode materials is one of the hotspots for preparing high-performance supercapacitors. The key is realizing the homogeneous dispersion of the two materials, carbon/PANI, and the connection interface with considerable firmness and strength. Therefore, based on the interfacial covalent bonding strategy, the N-P co-doped carbon membrane and PANI hybrid (NPCM@PANI) materials were designed and constructed. NPCMs were used as substrates to functionalize with nitric acid and ND42, and then co-aniline in situ on the surface of NPCMs. This approach aimed to obtain a hybrid material with high specific capacitance, using NPCM as the substrate. The resulting NPCM@PANI hybrids have a specific capacitance of up to 552 F/g (1 A/g), a small equivalent series resistance of 1.1 Ω and a low transfer diffusion resistance of about 1 Ω in 1&#xa0;M H<sub>2</sub>SO<sub>4</sub> electrolyte. The capacitance performance is still 78% after 1,000 cycles, which provides excellent capacitance properties.</p> Graphical abstract <p></p>

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Interface-tuned capacitance enhancement in N-P Co-doped carbon membrane/PANI hybrids for supercapacitors

  • 期刊论文

  • 发表日期：

    2026年2月26日

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  • Jiangtao Cai,
  • Yi Liu,
  • Xiaonan Zhou,
  • Yehao Hu,
  • Jin Yang,
  • Zhiqiang Wang,
  • Wenbin Sun,
  • Yating Zhang

摘要

Abstract

Conducting polyaniline (PANI) and porous carbon fibrous membranes to construct composite electrode materials is one of the hotspots for preparing high-performance supercapacitors. The key is realizing the homogeneous dispersion of the two materials, carbon/PANI, and the connection interface with considerable firmness and strength. Therefore, based on the interfacial covalent bonding strategy, the N-P co-doped carbon membrane and PANI hybrid (NPCM@PANI) materials were designed and constructed. NPCMs were used as substrates to functionalize with nitric acid and ND42, and then co-aniline in situ on the surface of NPCMs. This approach aimed to obtain a hybrid material with high specific capacitance, using NPCM as the substrate. The resulting NPCM@PANI hybrids have a specific capacitance of up to 552 F/g (1 A/g), a small equivalent series resistance of 1.1 Ω and a low transfer diffusion resistance of about 1 Ω in 1 M H2SO4 electrolyte. The capacitance performance is still 78% after 1,000 cycles, which provides excellent capacitance properties.

Graphical abstract