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<p>The current study focusses on a carbon–polymer primer coating on stainless steel (SS) mesh current collectors (CC) as a scalable and cost-effective interface engineering strategy. Electrodes fabricated on primed stainless steel (PSS) mesh were systematically compared with those on bare stainless steel (BSS) mesh to evaluate the influence of the primer layer which composed of carbon black (CB) and polyvinylidene fluoride (PVDF) in a ratio of 95:5. This thin layer coating forms a robust and uniform conductive network, effectively reducing the contact resistance, and enhancing ion accessibility. The as&#xa0;fabricated device (Mo–MnO<sub>2</sub>//AC) revealed that, PSS electrodes were able to maintain 75% of their initial capacitance at an elevated current density of 10&#xa0;A&#xa0;g<sup>−1</sup>, compared to BSS electrodes (only 31%). Notably, even with reduced conductive additive content, the PSS electrode delivered excellent cycling stability, retaining 91.5% of its capacitance after 5000 cycles. This strategy offers a cost-effective and scalable method for improving the performance of pseudocapacitor electrodes, highlighting the potential of carbon–polymer primer coatings as a valuable tool in practical energy storage applications.</p>

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Interface engineered carbon–polymer interlayers for high efficiency supercapacitor electrodes

  • 期刊论文

  • 发表日期：

    2026年1月21日

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  • M. Shimna,
  • Smita Mohanty

摘要

The current study focusses on a carbon–polymer primer coating on stainless steel (SS) mesh current collectors (CC) as a scalable and cost-effective interface engineering strategy. Electrodes fabricated on primed stainless steel (PSS) mesh were systematically compared with those on bare stainless steel (BSS) mesh to evaluate the influence of the primer layer which composed of carbon black (CB) and polyvinylidene fluoride (PVDF) in a ratio of 95:5. This thin layer coating forms a robust and uniform conductive network, effectively reducing the contact resistance, and enhancing ion accessibility. The as fabricated device (Mo–MnO2//AC) revealed that, PSS electrodes were able to maintain 75% of their initial capacitance at an elevated current density of 10 A g−1, compared to BSS electrodes (only 31%). Notably, even with reduced conductive additive content, the PSS electrode delivered excellent cycling stability, retaining 91.5% of its capacitance after 5000 cycles. This strategy offers a cost-effective and scalable method for improving the performance of pseudocapacitor electrodes, highlighting the potential of carbon–polymer primer coatings as a valuable tool in practical energy storage applications.