Al-Bujasim M. M., Gençten M.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, cilt.1, sa.1, ss.1-10, 2025 (Scopus)
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Yayın Türü:
Makale / Tam Makale
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Cilt numarası:
1
Sayı:
1
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Basım Tarihi:
2025
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Doi Numarası:
10.1149/1945-7111/ae283d
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Dergi Adı:
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
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Derginin Tarandığı İndeksler:
Scopus, Chemical Abstracts Core, Chimica, Compendex, INSPEC
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Sayfa Sayıları:
ss.1-10
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Yıldız Teknik Üniversitesi Adresli:
Evet
Özet
Abstract
High-performance anode materials are essential for improving lithium-ion battery (LiB) technology. In this work, we synthesized and studied a ternary composite of NGO, SiO₂, and PANI as a new anode material. The PANI was improved by varying monomer and acid concentrations. The best-performing type (0.3 M aniline, 3 M H₂SO₄) demonstrated good electrical conductivity and surface area. Electrochemical doping was used to create NGO, which has nitrogen defects that improve Li⁺ adsorption and conductivity. The composite electrodes (N0: N-GO-SiO₂; N1: high N-GO:PANI ratio; N2: low N-GO:PANI ratio) have been investigated in both half-cell and full-cell configuration. The N1 composite displayed outstanding electrochemical performance, giving a high initial discharge capacity of 1125 mAh g⁻¹ at 0.1C and maintaining 200 mAh g⁻¹ at 10C. Cycling stability was excellent, with just 8.5% capacity loss after 100 cycles. In contrast, the N2 composite had PANI-induced mechanical instability, and the N0 sample (without PANI) had low-rate capability due to inadequate conductivity. A full-cell battery (N1 || LiFePO₄) demonstrated practical viability, exceeding traditional graphite anodes in capacity and cycle efficiency. The combination of N-GO (conductivity), SiO₂ (high capacity), and PANI (redox activity/flexibility) shows promise for next-generation LiB anodes.