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Journals / Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi / 2026 / Cilt: 41 Sayı: 1

Influence of nanoscale hBN coating on the physical properties of battery separators

Nano boyutta hBN kaplamanın pil ayırıcılarının fiziksel özelliklerine etkisi

Benan Elmusa(ESKISEHIR TECHNICAL UNIVERSİTY)0000-0002-1722-2561
İrfan Töre(ESKİŞEHİR TEKNİK ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ)0009-0006-0234-241X
Nuran Ay(ESKİŞEHİR TEKNİK ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ)0000-0002-2228-9904
Pages
183–200
Publication Date
2026-02-20
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

According to the results of the contact angle measurements of the separators, it was revealed that the nano hBN coating increased the wettability, especially in the separator code 3501, it provided more wettability.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Rechargeable lithium-ion batteries (LIB) are currently used in all electronic devices such as portable devices and electric vehicles.
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Key Findings & Data:In this study, Celgard 3501, Gelon glass fiber and Whatman GF/D separators were utilized.
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Conclusion & Impact:According to the results of the contact angle measurements of the separators, it was revealed that the nano hBN coating increased the wettability, especially in the separator code 3501, it provided more wettability.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Hekzagonal bor nitrür · lityum iyon pil ayırıcı · ıslatılabilirlik

Abstract

Rechargeable lithium-ion batteries (LIB) are currently used in all electronic devices such as portable devices and electric vehicles. The main function of the separator between the anode and cathode in the batteries is not directly involved in the electrochemical reaction inside the battery, but to ensure the efficient transfer of ions during the charge-discharge processes. Various polymers and glass fiber separators are used commercially. In this study, Celgard 3501, Gelon glass fiber and Whatman GF/D separators were utilized. Different solutions prepared with nano hBN were coated on the separators and the basic physical properties of the separators were investigated. Phase analysis (XRD), FTIR analysis, folding behavior, contact angle measurement, behavior against temperature, microstructure of all separators were examined, thickness and weight change were measured. XRD and FTIR analyses show that the nano hBN coating was successfully realized. According to the results of the contact angle measurements of the separators, it was revealed that the nano hBN coating increased the wettability, especially in the separator code 3501, it provided more wettability. Thermal analysis results showed that nano hBN coated separators maintained their dimensional stability even at high temperatures. The surface morphology and porosity of the separators were affected by the amount of PVDF used as a binder in the coating solution. The results indicate that nano hBN coating has the potential to improve the safety and performance of separators used in lithium-ion batteries.

Özet

Şarj edilebilir lityum iyon piller (LİP) günümüzde taşınabilir cihazlar ve elektrikli araçlar gibi tüm elektronik cihazlarda kullanılmaktadır. Pillerde anot ve katot arasında bulunan ayırıcının temel işlevi pillerin içindeki elektrokimyasal reaksiyona doğrudan dahil olmayıp, şarj-deşarj işlemleri sırasında iyonların verimli bir şekilde aktarılmasını sağlamaktır. Ticari olarak çeşitli polimerler ve cam fiber ayırıcılar kullanılmaktadır. Bu çalışmada, Celgard 3501(3501), cam fiber Gelon (GF) ve Whatman GF/D cam fiber (WT) ayırıcılar kullanılmıştır. Nano hBN ile hazırlanan farklı çözeltiler ayırıcılara kaplanarak ayırıcıların temel fiziksel özellikleri incelenmiştir. Tüm ayırıcıların faz analizleri (XRD), FTIR analizleri, katlanma davranışı, temas açıları ölçümü, sıcaklığa karşı davranışları, mikroyapıları incelenmiş, kalınlık ve ağırlık değişimi ölçülmüştür. XRD ve FTIR analizleri, hBN kaplamanın başarıyla gerçekleştiğini göstermektedir. Ayırıcıların temas açısı ölçümleri sonuçlarına göre, nano hBN kaplamanın ıslanabilirliği artırdığını, özellikle 3501 kodlu ayırıcıda daha fazla ıslanabilirlik sağladığını ortaya koymuştur. Termal analizlerin sonuçları, nano hBN kaplı ayırıcıların yüksek sıcaklıklarda bile boyutsal stabilitesini koruduğu belirlenmiştir. Kaplama çözeltisinde bağlayıcı olarak kullanılan PVDF miktarına göre ayırıcıların yüzey morfolojisi ve gözenekliliği etkilenmiştir. Sonuçlar, nano hBN kaplamanın, lityum iyon pillerde kullanılan ayırıcıların güvenliği ve performansını artırma potansiyeline sahip olduğunu göstermektedir.

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Cite This Article

Elmusa, B., Töre, İ., Ay, N. (2026). Influence of nanoscale hBN coating on the physical properties of battery separators. Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi, Cilt: 41 Sayı: 1, 183–200. https://doi.org/10.17341/gazimmfd.1587547

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