Production and Characterization of α-MnO2/Graphene/CNT Nanocomposite Electrodes for Li-O2 Batteries

Yıl 2018, Cilt: 6 Sayı: 1, 49 - 55, 31.01.2018

Miraç Alaf Ubeyd Toçoğlu Hatem Akbulut

https://doi.org/10.21541/apjes.349419

Öz

In this study, of α-MnO₂/Graphene/CNT nanocomposites were
produced and characterized as electrode for Li-O₂ batteries. Graphene
was produced with Hummer method and carbon nano tubes were added to graphene as
spacers between layers. α-MnO₂nanorods were synthesized and α-MnO₂/Graphene/CNT
nanocomposites were fabricated by vacuum filtration technique as a paper
electrode. α-MnO₂nanorods were added to composite at three different rates and electrodes
were characterized by FESEM and XRD. The electrochemical characterization was
carried out in ECC-air test cells.  

Anahtar Kelimeler

Graphene, α-MnO2 nanorods, composite, energy storage

Li-O2 Piller için α-MnO2/Grafen/KNT Nanokompozit Elektrotlarının Üretimi ve Karakterizasyonu

Öz

Bu çalışmada
Li-O₂ pilleri için elektrot malzemesi α-MnO₂/Grafen/KNT
nanokompozitleri üretilmiş ve karakterize edilmiştir. Grafen Hummer metodu ile
üretilmiş ve tabakalar arası boşluk yapıcı olarak karbon nano tüp ilavesi
yapılmıştır. α-MnO₂
nano çubuklar sentezlenerek α-MnO₂/Grafen/KNT
nanokompozitleri vakum filtrasyon yöntemi ile kağıt halinde elektrot olarak
üretilmiştir. Üç farklı oranda ilave edilen α-MnO₂
nano çubukları ile elektrotların yapısal karakterizasyonu FESEM, XRD
kullanılarak ve elektrokimyasal karakterizasyonu da ECC-hava
test hücreleri ile yapılmıştır. 

Anahtar Kelimeler

Grafen, α-MnO2 nano çubuklar, kompozit, enerji depolama

Kaynakça

• [1] D. Capsoni, M. Bini, S. Ferrari, E. Quartarone, and P. Mustarelli, “Recent advances in the development of Li-air batteries,” J. Power Sources, vol. 220, pp. 253–263, 2012.
• [2] N. Nitta, F. Wu, J. T. Lee, and G. Yushin, “Li-ion battery materials: Present and future,” Mater. Today, vol. 18, no. 5, pp. 252–264, 2015.
• [3] M. J. Song and M. W. Shin, “Fabrication and characterization of carbon nanofiber@mesoporous carbon core-shell composite for the Li-air battery,” Appl. Surf. Sci., vol. 320, pp. 435–440, 2014.
• [4] A. Kraytsberg and Y. Ein-Eli, “Review on Li-air batteries - Opportunities, limitations and perspective,” J. Power Sources, vol. 196, no. 3, pp. 886–893, 2011.
• [5] J. Liu, R. Younesi, T. Gustafsson, K. Edström, and J. Zhu, “Pt/α-MnO2 nanotube: A highly active electrocatalyst for Li-O2 battery,” Nano Energy, vol. 10, pp. 19–27, 2014.
• [6] W. Xiao, Z. Wang, H. Guo, X. Li, J. Wang, S. Huang, and L. Gan, “Fe2O3 particles enwrapped by graphene with excellent cyclability and rate capability as anode materials for lithium ion batteries,” Appl. Surf. Sci., vol. 266, pp. 148–154, 2013.
• [7] Y. Wen, C. Huang, L. Wang, and D. Hulicova-Jurcakova, “Heteroatom-doped graphene for electrochemical energy storage,” Chinese Sci. Bull., vol. 59, no. 18, pp. 2102–2121, 2014.
• [8] G. Gnana kumar, Z. Awan, K. Suk Nahm, and J. Stanley Xavier, “Nanotubular MnO2/graphene oxide composites for the application of open air-breathing cathode microbial fuel cells,” Biosens. Bioelectron., vol. 53, pp. 528–534, 2014.
• [9] H. Zhou, X. Yang, J. Lv, Q. Dang, L. Kang, Z. Lei, Z. Yang, Z. Hao, and Z. H. Liu, “Graphene/MnO2 hybrid film with high capacitive performance,” Electrochim. Acta, vol. 154, pp. 300–307, 2015.
• [10] Y. Wimalasiri and L. Zou, “Carbon nanotube/graphene composite for enhanced capacitive deionization performance,” Carbon N. Y., vol. 59, pp. 464–471, 2013.
• [11] L. Zhang, F. Zhang, G. Huang, J. Wang, X. Du, Y. Qin, and L. Wang, “Freestanding MnO2@carbon papers air electrodes for rechargeable Li-O2 batteries,” J. Power Sources, vol. 261, pp. 311–316, 2014.
• [12] R. S. Kalubarme, C. H. Ahn, and C. J. Park, “Electrochemical characteristics of graphene/manganese oxide composite catalyst for Li-oxygen rechargeable batteries,” Scr. Mater., vol. 68, no. 8, pp. 619–622, 2013.
• [13] D. A. Tompsett, S. C. Parker, and M. S. Islam, “Surface properties of α-MnO 2 : relevance to catalytic and supercapacitor behaviour,” J. Mater. Chem. A, vol. 2, no. 37, pp. 15509–15518, 2014.