Elektroeğirme yöntemi ile katı hal bataryalar için hegzagonal bor nitrür katkılı katı elektrolit üretiminin incelenmesi
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Dosyalar
Tarih
2024
Yazarlar
Dergi Başlığı
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Cilt Başlığı
Yayıncı
Selçuk Üniversitesi, Fen Bilimleri Enstitüsü
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Bu çalışmada birçok güvenlık ve performans zaafiyeti olan lityum iyon batarya teknolojisine alternatif katı hal bataryanın elektroeğirme yöntemi ile elektrolit üretimini ve h-BN (Hegzagonal Bor Nitrür) katkısının katı hal batarya elektrolitinin üretimine morfolojik ve elektrokimyasal açıdan etkisini incelemek amaçlanmaktadır. Bu amaç doğrultusunda elektroeğirme cihazında PVDF (Polivinilidenflorür) ve PEO (polietilenoksit) polimer çözeltilerinden yaklaşık %13 ve %7 lik oranlar ile magnetik karıştırıcıda karıştırılarak bir kopolimer hazırlandı. Bu kopolimer ağırlıkça %10 oranında Li3PO4 (Lityum Fosfat) ve % 0.2 oranında TBAC (Tetrabutilamonyumklorür) ile tekrar karıştırılarak elektroeğirmede katı elektrolit üretimi için çözelti elde edilmiştir. Aynı oranlarda toplam 4 adet katı elektrolit için çözelti hazırlanmıştır. Bu katı elektrolit çözeltilere katkısız (%0) , %1, %5, ve %10 oranlarında h-BN ilave edilerek üretim için tekrar karıştırılarak homojen hale getirildi. Çözeltiler elektroeğirme cihazında yüksek voltajlı elektriktrostatik kuvvetler etkisi altında 0,5 mL/h-1 hızında çekme ve döndürme için bir şırıngaya aktarıldı. Spesifik olarak, kullanılan voltajın ayar değeri 30 kV ve iğne ile tanbur arasındaki alma mesafesi 18 cm idi. Elektroeğirme cihazında üretilen bu katı elektrolitler elektro kimyasal testler öncesinde taramalı elektron mikroskobu (SEM) ile yüzey morfolojik yapıları incelendi. Elektrokimyasal testler; ( döngüsel voltametri (CV) ve elektrokimyasal impedans spektroskopisi (EİS) ile farklı gerilim ve akım aralıklarında katı elektrolitlerin performansları ölçüldü ve ardından tekrar taramalı elektron mikroskobu (SEM) ile h-BN ün farklı oranlarda ve katkısız durumlarına göre; katı elektrolitte h-BN ün yüzeysel mukavemet ve şarj- deşarj esnasında katı elektrolitte dentrit oluşumuna önleyici etkisinin olup olmadığı morfolojik ve elektrokimyasal testler ışığında değerlendirildi. Sonuç olarak h-BN ün şarj-deşarj esnasında oluşabilecek korozyona karşı daha dirençli olduğu bunun da bataryaların performansının daha uzun ömürlü ve güvenlik problemlerinin asgari düzeye indirilebileceğini ortaya koymuştur.
In this study, it is aimed to examine the electrolyte production of solid-state battery by electrospinning method, which is an alternative to lithium ion battery technology, which has many security and performance weaknesses, and the morphological and electrochemical effects of h-BN (Hexagonal Boron Nitride) additive on the production of solid-state battery electrolyte. For this purpose, a copolymer was prepared by mixing PVDF (Polyvinylidene Fluoride) and PEO (Polyethyleneoxide) polymer solutions in the electrospinning device with approximately 13% and 7% ratios in a magnetic stirrer. This copolymer was mixed again with 10% by weight Li3PO4 (Lithium Phosphate) and 0.2% TBAC (Tetrabutylammonium chloride) to obtain a solution for the production of solid electrolyte in electrospinning. Solutions were prepared for a total of 4 solid electrolytes in the same proportions. Pure (0%), 1%, 5%, and 10% h-BN was added to these solid electrolyte solutions and they were mixed again to make them homogeneous for production. The solutions were transferred to a syringe for drawing and spinning at a speed of 0.5 mL h-1 under the influence of high-voltage electrostatic forces in the electrospinning device. Specifically, the setting value of the voltage used was 30 kV and the pickup distance between the needle and the drum was 18 cm. The surface morphological structures of these solid electrolytes produced in the electrospinning device were examined with a scanning electron microscope (SEM) before electrochemical tests. Electrochemical tests; (The performances of solid electrolytes were measured at different voltage and current ranges by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS), and then again by scanning electron microscopy (SEM), h-BN was measured in different ratios and in its pure state; whether h-BN has a preventive effect on superficial strength and dendrite formation in solid electrolyte during charge-discharge was evaluated in the light of morphological and electrochemical tests. As a result, it has been revealed that h-BN is more resistant to corrosion that may occur during charge-discharge, which means that the performance of the batteries can be longer-lasting and safety problems can be minimized.
In this study, it is aimed to examine the electrolyte production of solid-state battery by electrospinning method, which is an alternative to lithium ion battery technology, which has many security and performance weaknesses, and the morphological and electrochemical effects of h-BN (Hexagonal Boron Nitride) additive on the production of solid-state battery electrolyte. For this purpose, a copolymer was prepared by mixing PVDF (Polyvinylidene Fluoride) and PEO (Polyethyleneoxide) polymer solutions in the electrospinning device with approximately 13% and 7% ratios in a magnetic stirrer. This copolymer was mixed again with 10% by weight Li3PO4 (Lithium Phosphate) and 0.2% TBAC (Tetrabutylammonium chloride) to obtain a solution for the production of solid electrolyte in electrospinning. Solutions were prepared for a total of 4 solid electrolytes in the same proportions. Pure (0%), 1%, 5%, and 10% h-BN was added to these solid electrolyte solutions and they were mixed again to make them homogeneous for production. The solutions were transferred to a syringe for drawing and spinning at a speed of 0.5 mL h-1 under the influence of high-voltage electrostatic forces in the electrospinning device. Specifically, the setting value of the voltage used was 30 kV and the pickup distance between the needle and the drum was 18 cm. The surface morphological structures of these solid electrolytes produced in the electrospinning device were examined with a scanning electron microscope (SEM) before electrochemical tests. Electrochemical tests; (The performances of solid electrolytes were measured at different voltage and current ranges by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS), and then again by scanning electron microscopy (SEM), h-BN was measured in different ratios and in its pure state; whether h-BN has a preventive effect on superficial strength and dendrite formation in solid electrolyte during charge-discharge was evaluated in the light of morphological and electrochemical tests. As a result, it has been revealed that h-BN is more resistant to corrosion that may occur during charge-discharge, which means that the performance of the batteries can be longer-lasting and safety problems can be minimized.
Açıklama
Anahtar Kelimeler
Elektroeğirme, Hegzagonal Bor Nitrür (h-BN), Katı Elektrolit, Katı Hal Batarya, Lityum İyon Batarya., Electrospinning, Hexagonal Boron Nitride (h-BN), Lithium Ion Battery, Solid Electrolyte, Solid State Battery
Kaynak
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Scopus Q Değeri
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Künye
Alan A., (2024). Elektroeğirme Yöntemi ile Katı Hal Bataryalar İçin Hegzagonal Bor Nitrür Katkılı Katı Elektrolit Üretiminin İncelenmesi. (Yüksek Lisans Tezi). Selçuk Üniversitesi, Fen Bilimleri Enstitüsü, Konya.
