SINTESIS DAN KARAKTERISASI ELEKTROLIT Ce0,9Gd0,1-XNdXO1,90 UNTUK APLIKASI SEL BAHAN BAKAR PADATAN SUHU SEDANG
DOI:
https://doi.org/10.17146/jsmi.2018.19.2.4141Keywords:
Ce0,9Gd0,1O0,195 terdoping Nd2O3, Komposit elektrolit, Konduktivitas ionikAbstract
Elektrolit berbasis serium seperti GDC10 telah banyak dikembangkan untuk aplikasi sel bahan bakar oksida padatan suhu sedang atau yang dikenal dengan Intermediate Temperature Solid Oxide Fuel Cell (IT-SOFC). Kodoping merupakan salah satu cara untuk meningkatkan konduktivitas elektrolit IT-SOFC. Tujuan dari penelitian ini adalah untuk mempelajari pengaruh penambahan kodopan neodimium (Nd) terhadap GDC10 (Ce0,9Gd0,1-xNdxO1,90) dengan rasio molar x = 0,025; 0,050; dan 0,075 terhadap sifat fisis dan elektrokimianya. Neodimium digunakan sebagai kodopan karena dapat menurunkan energi aktivasi, sehingga konduktivitas elektrolit meningkat. Metode sintesis yang digunakan adalah sol gel untuk menghasilkan serbuk GDC terdoping Nd, setelah itu serbuk dibuat pelet. Sampel dikarakterisasi dengan menggunakan X-Ray Diffraction (XRD) untuk mengidentifikasi fasa, Scanning Electron Microscope (SEM) untuk melihat morfologi dan Thermal Gravimetric Analysis (TGA) untuk melihat stabilitas termalnya. Dari hasil penelitian, kalsinasi pada suhu 700 oC selama 5 jam dan sintering pada suhu 1350 oC selama 2 jam diperoleh densitas pelet elektrolit lebih besar dari 95%. Hal ini telah memenuhi syarat sebagai elektrolit sel bahan bakar padatan yang baik. Keseluruhan sampel memiliki struktur kubik dengan ukuran kristal antara 4,26 nm hingga 4,47 nm. GDC10 terdoping neodimium dengan rasio molar x = 0,025 (GDC-Nd0,025) memiliki konduktivitas tertinggi yaitu 0,055 S/cmpada suhu 600 oC. Hasil tersebut menunjukkan bahwa kodoping dapat meningkatkan konduktivitas sel elektrolit GDC untuk aplikasi sel bahan bakar oksida padatan suhu sedang.
Downloads
References
. R. Fuentes and R. Baker. “Synthesis and Properties of Gadolinium-doped Ceria Solid Solutions for ITSOFC Electrolytes.” International Journal of Hydrogen Energy, vol. 33, pp. 3480-3484, Jul. 2008.
. P. E. Dodds, I. Staffell, A. D. Hawkes, F. Li, P. Grunewald, W. McDowall and P. Ekins. “Hydrogen and Fuel Cell Technologies for Heating:AReview.” International Journal of Hydrogen Energy, vol. 40, pp. 2065-2083, Jan. 2015.
. J. T. Kim, T. H. Lee, K.Y. Park, Y. Seo, K. B. Kim, S. J. Song, B. Park and J. Y. Park. “Electrochemical Properties of Dual Phase Neodymium-doped Ceria Alkali Carbonate Composite Electrolytes in Intermediate Suhue.” Journal of Power Sources, vol. 275, pp. 563-572, Oct. 2015.
. J. A. Kilner and M. Burriel. “Materials for Intermediate-Suhue Solid-Oxide Fuel Cell.”Annual Review of Materials Research, vol. 44, pp. 365-393, Apr. 2014.
. B. Moreno, R.F. Gonzalez, J.R. Jurado,A. Makradi, P. Nunez and E. Chinarro. “Fabrication and Characterization of Ceria-based Buffer Layers for Solid Oxide Fuel Cells.” International Journal of Hydrogen Energy, vol. 39, pp. 5433-5439, Jun. 2014.
. F. Y. Wang, S. Chen and S. Cheng. “Gd3+ and Sm3+ Co-doped Ceria Based Electrolytes for Intermediate Suhue Solid Oxide Fuel Cell.” Electrochemistry Communications, vol. 6, pp. 743-746, May 2004.
. S. I. Ahmad, P. Koteshwar Rao and I. A. Syed. “Sintering Suhue Effect on Density, Structural and Morphological Properties of Mg- and Sr-doped Ceria.” Journal Taibah University Science, vol. 10, pp. 381-385, May 2016.
. C. Tian, B. Ji, J. Xie, W. Bao, K. Liu, J. Cheng and Q. Yin. “Preparation and Characterization of Ce0.8La0.2–xYxO1.9 as Electrolyte for Solid Oxide Fuel Cells.” Journal of Rare Earths, vol. 32, pp. 1162- 1169, Dec. 2014.
. A. Hardian, G. M. Choi, V. Suendo and Ismunandar. “Structure and Ionic Conductivity of Co-doped Ceria for IT-SOFC Electrolytes.” Journal of the Australian Ceramics Society, vol. 50(2), pp. 99-109, Jan. 2014.
. F. S. Silva and T. M. Souza. “Novel Materials for Solid Oxide Fuel Cell Technologies: A Literature Review.” International Journal of Hydrogen Energy, vol. 42, pp. 26020-26036, Sep. 2017.
. A. Arabachi, Ö. Serin, V. Sarýboða and M. Öksüzömer. “Characterization of Sm and Nd Codoped Ceria-Based Electrolyte Materials.” Acta Physica Polonica A, vol. 129, no. 4, pp. 524-527, Apr. 2015.
. G. Vimal, K. P. Mani, P. R. Biju, C. Joseph, N.V. Unnikrishnan and M. A. Ittyachen. “Influences of Annealing Suhue and Doping Concentration on Microstructural and Optical Properties of CeO2 :Sm3+ Nanocrystals.” Acta Metallurgica Sinica (English Letters), vol. 28, no. 6, pp. 758-765, Mar. 2015.
. B. Dhanalakshmi, K, Pratap, R.B. Parvatheeswara and S. P. S. V. Rao. “Effect of Mn Doping on Structural, Dielectric and Multiferroic Properties of BiFeO3 Nanoceramic.” Journal of Alloys and Compound, vol. 676, pp 193-201, Mar. 2016.
. N. Mahato, A. Banerjee, A. Gupta, S. Omar and K. Balani. “Progress in Material Selection for Solid Oxide Fuel Cell Technology: A Review.” Progress in Materials Science, vol. 72, pp. 141-337, Feb. 2015.
. K. Rajkumar, M. Muthukumar and R. V. Mangalaraja. “Electrochemical Degradation of C.I. Reactive Orange 107 Using Gadolinium (Gd3+),
Neodymium (Nd3+) and Samarium (Sm3+) Doped Cerium Oxide Nanoparticles.” International Journal of Industrial Chemistry, vol. 6, pp. 285 295, Aug. 2015.
. N. Priyasharsini, S. Thamilsevan, S. Sangeetha and S. Vairam. “Effect of Neodymium Substitution on Structural, Optical, Magnetic and Antibacterial Activity of Zinc Selenide Nanoparticles.” Journal of Ovonic Research, vol.12, pp. 87-93, Apr. 2016.
. K. H. Krishna, S. Neti,A. Oztekin and S. Mohapatra. “Modeling of Particle Agglomeration in Nanofluids.” Journal of Applied Physics, vol. 117, pp. 094304-01 - 094304-10, Feb. 2015.
. L. Guan, S. Le, S. He, X. Zhu, T. Liu and K. Sun. “Densification Behavior and Space Charge Blocking Effect of Bi2O3 and Gd2O3 Co-doped CeO2 as Electrolyte for Solid Oxide Fuel Cell.” Electrochimica Acta, vol. 161, pp. 129-136, Feb. 2015.
. T. H. Santos, J. P. F. Grilo, F. J.A. Loureiro, Duncan P. Fagg, F. C. Fonseca and D. A. Macedo. “Structure, Densification and Electrical Properties of Gd3+ and Cu2+ Co-doped Ceria Solid Electrolyte for SOFC Application: Effects of Gd2O3 Content.”
Ceramic International, vol. 44, pp. 2745-2751, Nov. 2017.
. S. Kulkarni, S. Duttagupta and Girish Phatak. “Study of Glycine Nitrate Precursor Method for Synthesis of Gadolinium Doped Ceria (Ce0.8Gd0.2O1.90) as Electrolyte for Intermediate Suhue Solid Oxide Fuel Cell.” Royal Society of Chemistry Advances, vol. 4, pp. 46602-46612, Sep. 2014.
. A. S. Babu, R. Bauri and G. S. Reddy. “Processing and Conduction Behavior of Nanocrystalline Gddoped and Rare Earth Co-Doped Ceria Electrolyte.” Electrochimica Acta, vol. 209, pp. 541-550, May 2016.
. S. Omar, E. D. Wachsman and J. C. Nino. “Higher Conductivity Sm3+ and Nd3+ Co-doped Ceria Based Electrolyte Materials.” Solid State Ionic, vol. 178, pp. 1890-1897, Dec. 2008.
. K. A. Bhabu, J. Theerthagiri, J. Madhavan, T. Balu and T. R. Rajasekaran. “Superior Oxide Ion Conductivity of Novel Acceptor Doped Cerium Oxide Electrolytes for IT-SOFC Applications.” Journal of Physical Chemistry C, vol. 120, no. 33, pp.18452-18461,Aug. 2016.
. S. Anirban and A. Dutta. “Structural and Ionic Transport Mechanism of Rare Earth Doped Cerium Oxide Nanomaterials: Effect of Ionic Radius of Dopant Cations.” Solid State Ionics, vol. 309, pp. 137-145, Jul. 2017.
Downloads
Published
How to Cite
Issue
Section
License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
