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<p>In the present work, a copper substrate was successfully coated with a conductive paste made of silicon nanoparticles as the active ingredient, carbon black, and a poly (acrylic acid) (PAA) binder. Electrochemical impedance spectroscopy (EIS), galvanostatic charge/discharge (GCD), and cyclic voltammetry (CV) were then performed to assess the electrochemical performance of the manufactured electrode. The structural and surface characterizations were performed before and after cycling using X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) in conjunction with energy-dispersive X-ray spectroscopy (EDX). X-ray diffraction (XRD) analysis was also carried out to confirm the crystalline nature of the Silicon phase in the electrode before cycling. With a high initial discharge capacity of 3868 mAh g⁻¹ and an initial Coulombic Efficiency (ICE) of 98%, the Si–PAA electrode came close to silicon’s theoretical capacity of 4200 mAh g⁻¹. Our electrode performed competitively when compared to other Silicon-based electrodes that have been reported in the Literature. Furthermore, the electrode demonstrated stable behavior under a range of rates and maintained an 81% capacity retention after 100 cycles at a current density of 32&#xa0;mA g⁻¹, demonstrating good rate capability. The electrode’s strong adherence to the current collector and its capacity to maintain integrity throughout cycling demonstrate the improvement in mechanical stability, however additional quantitative mechanical tests (such as adhesion or flexibility) are still being conducted.</p> Graphical Abstract <p></p>

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Effects of poly acrylic-acid aqueous binder on performance of nano si with black carbon paste as anodes in li-ion batteries

  • 期刊论文

  • 发表日期：

    2025年10月10日

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  • Isma Bozetine,
  • Abdelhak Cheriet,
  • Chafiaa Yaddaden,
  • Fahim Hamidouche,
  • Fatima Boudeffar,
  • Lamia Talbi,
  • Aissa Keffous,
  • Samira Kaci,
  • Ali Mameri,
  • Amar Manseri,
  • Jean-Claude Lepretre,
  • Zineb Meguellati

摘要

In the present work, a copper substrate was successfully coated with a conductive paste made of silicon nanoparticles as the active ingredient, carbon black, and a poly (acrylic acid) (PAA) binder. Electrochemical impedance spectroscopy (EIS), galvanostatic charge/discharge (GCD), and cyclic voltammetry (CV) were then performed to assess the electrochemical performance of the manufactured electrode. The structural and surface characterizations were performed before and after cycling using X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) in conjunction with energy-dispersive X-ray spectroscopy (EDX). X-ray diffraction (XRD) analysis was also carried out to confirm the crystalline nature of the Silicon phase in the electrode before cycling. With a high initial discharge capacity of 3868 mAh g⁻¹ and an initial Coulombic Efficiency (ICE) of 98%, the Si–PAA electrode came close to silicon’s theoretical capacity of 4200 mAh g⁻¹. Our electrode performed competitively when compared to other Silicon-based electrodes that have been reported in the Literature. Furthermore, the electrode demonstrated stable behavior under a range of rates and maintained an 81% capacity retention after 100 cycles at a current density of 32 mA g⁻¹, demonstrating good rate capability. The electrode’s strong adherence to the current collector and its capacity to maintain integrity throughout cycling demonstrate the improvement in mechanical stability, however additional quantitative mechanical tests (such as adhesion or flexibility) are still being conducted.

Graphical Abstract