Synergetic Li-ion Storage Effects of Nanostructured V2O5–Modified Silicon ThinFilm Anodes
SÜLEYMAN DEMIREL ÜNIVERSITESI FEN EDEBIYAT FAKÜLTESI FEN DERGISI = SÜLEYMAN DEMIREL UNIVERSITY FACULTY OF ARTS AND SCIENCE JOURNAL OF SCIENCE, cilt.20, ss.143-159, 2025 (TRDizin)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 20
- Basım Tarihi: 2025
- Dergi Adı: SÜLEYMAN DEMIREL ÜNIVERSITESI FEN EDEBIYAT FAKÜLTESI FEN DERGISI = SÜLEYMAN DEMIREL UNIVERSITY FACULTY OF ARTS AND SCIENCE JOURNAL OF SCIENCE
- Derginin Tarandığı İndeksler: zbMATH, Directory of Open Access Journals, TR DİZİN (ULAKBİM)
- Sayfa Sayıları: ss.143-159
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Süleyman Demirel Üniversitesi Adresli: Evet
Özet
In this study, a nanostructured vanadium pentoxide (V₂O₅)-modified silicon (Si) thin film anodewas successfully fabricated using radio frequency (RF) magnetron sputtering to enhance theelectrochemical performance of Si-based thin film anodes for lithium-ion batteries (LIBs).Structural and morphological characterization confirmed the successful deposition of V2O5interlayer modified Si thin film architecture with improved surface roughness andcompositional uniformity. Electrochemical analyses revealed a synergistic effect between thehigh-capacity Si and the pseudocapacitive behavior of V₂O₅. Cyclic voltammetry (CV) andkinetic studies demonstrated a mixed charge storage mechanism, with both diffusion-controlledand capacitive contributions. The modified Si thin film anode delivered initial dischargecapacity of ~2013 mAh/g, followed by a stable reversible capacity of 367 mAh/g over 180cycles. These results suggest that V₂O₅ interlayer engineering offers a promising strategy toovercome the limitations of Si anodes and advance high-performance LIB systems.