Lityum-Iyon Piller Için 3d Baskı Teknolojisi Ile Yüksek Kapasiteli 3d Serbest Anot Üretimi

Akbulut, Hatem; BULUT, Emrah; CAN, Mustafa

Lityum-Iyon Piller Için 3d Baskı Teknolojisi Ile Yüksek Kapasiteli 3d Serbest Anot Üretimi

Yürütücü

Emrah BULUT (Sakarya Üniversitesi, Fen Edebiyat Fakültesi, Kimya Bölümü, Sakarya, Türkiye)

Danışman(lar)

HATEM AKBULUT (Adres Yazılmamış)

Araştırmacı(lar)

Mustafa CAN (Adres Yazılmamış)

17 7

Proje Grubu: MAG Sayfa Sayısı: 0 Proje No: 315M250 Proje Bitiş Tarihi: 01.09.2018 Metin Dili: Türkçe İndeks Tarihi: 20-03-2020

Lityum-Iyon Piller Için 3d Baskı Teknolojisi Ile Yüksek Kapasiteli 3d Serbest Anot Üretimi

Öz:

Proje kapsamında Li-iyon pillerdeki kapasite tutma, hızlı şarj/deşarj ve yüksek akım yoğunluklarında çalışma problemlerine çözüm aramak amacıyla, 3D baskı tekniği ile orijinal 3 Boyutlu Si/Azot Katkılı Grafen Aerojel (3D Si/NGA) kompozit serbest elektrotun üretilmiştir. Yüksek teorik kapasitesi ve nanopartiküllerin kısa Li+ difüzyon mesafesi dolayısıyla silisyum nanopartiküller tercih edilmiş; silisyumda meydana gelen yüksek hacim genleşmesini sönümlemek için grafen aerojellerin kullanımına karar verilmiştir. Bununla birlikte, elektrotun 3D baskı teknolojisi ile serbest elektrot olarak üretilmesi grafen ile akım toplayıcı arasındaki temas direncini ve pilin içindeki bileşenlerden kaynaklanan toplam iç direnci düşürmüş, elektrot kesme işlemi esnasında meydana gelen deformasyonu ortadan kaldırmıştır. Grafen aerojeller azot katkılanarak oluşturulan kusurlu bölgeler sayesinde silisyum nanopartiküllerin bağlanma kuvveti arttırılmış ve Li+ geçiş hızı ve lityum depolama kabiliyeti desteklenmiştir. Böylece Si nanopartiküller ve NGA kombinasyonu malzemenin iletkenliğini arttırmış, agregasyon problemini hafifletmiş ve hacim genişlemesini düşürmüştür. Öncelikle modifiye Hummers metodu ile grafit katmanlara ayrılarak Grafen oksit (GO) elde edilmiştir. Elde edilen GO, silisyum ile karıştırılarak sol-jel kimyası ile Si/GO mürekkep hazırlanmıştır. 3D baskı teknolojisi ile basılan Si/GO dondurarak kurutma işleminin ardından azot/amonyak atmosferinde termal indirgeme ile nihai ürün olan 3 boyutlu Si/Azot Katkılı Grafen Aerojel (3D Si/NGA) serbest anota dönüşmüştür. Nihai ürün 3D Si/NGA?nın ve üretim aşamaları esnasındaki ara ürünlerin yapısal ve morfolojik Karakterizasyonu XRD, Raman, FTIR, BET, FE-SEM, HR-TEM ile yapılmıştır. Elektrokimyasal testler ise CR 2016 buton piller ile yapılmıştır. Çalışma elektrotu olarak 3D Si/NGA, karşıt elektrot olarak lityum folyo, elektrolit olarak LiFP6 kullanılmıştır. Şarj-deşarj davranışları, döngü ömürleri, spesifik kapasiteleri kronopotansiyometrik (CP) teknik ile, iç direnç ölçümleri elektrokimyasal impedans spektroskopisi (EIS) ile, elektrot-elektrolit arayüzeyinde meydana gelen elektrokimyasal değişimler dönüşümlü voltametri (CV) ile tespit edilmiştir. 100 mA/g akım yoğunluğunda en az 3000 mAh/g civarında spesifik kapasite elde edilmiş ve 100 şarj/deşarj döngüsü sonunda kapasitenin % 88?ini, 1000 döngü sonunda % 48?ini korumuştur. Yüksek (1, 2, 3 A/g) akım yoğunluklarında sırasıyla 1987, 1756, 1400 mAh/g kapasite elde edilmiştir; ultra yüksek (4, 5, 6, 8 A/g) akım yoğunlukları ile ise 1250, 952, 595, 333 mAh/g kapasite elde edilmiştir. Tüm bu şarj/deşarj döngüleri boyunca % 95 üzerinde kulombik etkinlik sağlanmıştır

Anahtar Kelime: Lityum-iyon piller Azot katkılı grafen aerojeller Silisyum 3 Boyutlu baskı

Konular: Kimya, Uygulamalı Kimya, İnorganik ve Nükleer

Erişim Türü: Erişime Açık

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APA	BULUT E, Akbulut H, CAN M (2018). Lityum-Iyon Piller Için 3d Baskı Teknolojisi Ile Yüksek Kapasiteli 3d Serbest Anot Üretimi. , 1 - 0.
Chicago	BULUT Emrah,Akbulut Hatem,CAN Mustafa Lityum-Iyon Piller Için 3d Baskı Teknolojisi Ile Yüksek Kapasiteli 3d Serbest Anot Üretimi. (2018): 1 - 0.
MLA	BULUT Emrah,Akbulut Hatem,CAN Mustafa Lityum-Iyon Piller Için 3d Baskı Teknolojisi Ile Yüksek Kapasiteli 3d Serbest Anot Üretimi. , 2018, ss.1 - 0.
AMA	BULUT E,Akbulut H,CAN M Lityum-Iyon Piller Için 3d Baskı Teknolojisi Ile Yüksek Kapasiteli 3d Serbest Anot Üretimi. . 2018; 1 - 0.
Vancouver	BULUT E,Akbulut H,CAN M Lityum-Iyon Piller Için 3d Baskı Teknolojisi Ile Yüksek Kapasiteli 3d Serbest Anot Üretimi. . 2018; 1 - 0.
IEEE	BULUT E,Akbulut H,CAN M "Lityum-Iyon Piller Için 3d Baskı Teknolojisi Ile Yüksek Kapasiteli 3d Serbest Anot Üretimi." , ss.1 - 0, 2018.
ISNAD	BULUT, Emrah vd. "Lityum-Iyon Piller Için 3d Baskı Teknolojisi Ile Yüksek Kapasiteli 3d Serbest Anot Üretimi". (2018), 1-0.

APA	BULUT E, Akbulut H, CAN M (2018). Lityum-Iyon Piller Için 3d Baskı Teknolojisi Ile Yüksek Kapasiteli 3d Serbest Anot Üretimi. , 1 - 0.
Chicago	BULUT Emrah,Akbulut Hatem,CAN Mustafa Lityum-Iyon Piller Için 3d Baskı Teknolojisi Ile Yüksek Kapasiteli 3d Serbest Anot Üretimi. (2018): 1 - 0.
MLA	BULUT Emrah,Akbulut Hatem,CAN Mustafa Lityum-Iyon Piller Için 3d Baskı Teknolojisi Ile Yüksek Kapasiteli 3d Serbest Anot Üretimi. , 2018, ss.1 - 0.
AMA	BULUT E,Akbulut H,CAN M Lityum-Iyon Piller Için 3d Baskı Teknolojisi Ile Yüksek Kapasiteli 3d Serbest Anot Üretimi. . 2018; 1 - 0.
Vancouver	BULUT E,Akbulut H,CAN M Lityum-Iyon Piller Için 3d Baskı Teknolojisi Ile Yüksek Kapasiteli 3d Serbest Anot Üretimi. . 2018; 1 - 0.
IEEE	BULUT E,Akbulut H,CAN M "Lityum-Iyon Piller Için 3d Baskı Teknolojisi Ile Yüksek Kapasiteli 3d Serbest Anot Üretimi." , ss.1 - 0, 2018.
ISNAD	BULUT, Emrah vd. "Lityum-Iyon Piller Için 3d Baskı Teknolojisi Ile Yüksek Kapasiteli 3d Serbest Anot Üretimi". (2018), 1-0.