Pengaruh Reduktor Zink pada Sintesis Graphene terhadap Performa PdAu/Graphene sebagai Material Elektrokatalis DMFC

Frizka Vietanti, Diah Susanti, Hariyati Purwaningsih, Fredy Kurniawan

Abstract

Sel bahan bakar adalah peralatan elektrokimia yang mengubah energi kimia dalam bahan bakar secara
langsung menjadi energi listrik. Direct Methanol Fuel Cell (DMFC) merupakan jenis sel bahan bakar yang
menarik perhatian karena menghasilkan densitas energi yang tinggi dan menggunakan jenis bahan bakar
cair yaitu metanol. Saat ini katalis berbasis Palladium (Pd) yang didepositkan pada elektroda berbasis
karbon memainkan peranan penting untuk menggantikan Platina (Pt)/C karena cadangan terbatas, harga
mahal, dan ketidakstabilan dalam operasi sebagai material elektrokatalis DMFC. Graphene sebagai material
baru untuk elektroda DMFC telah terbukti dapat meningkatkan performa DMFC. Faktor keberhasilan
reduksi graphene oxide menjadi graphene dipengaruhi oleh reduktor zink (Zn). Dalam penelitian ini
diberikan variasi massa reduktor Zn senilai 0.8, 1.6, dan 2.4 gram. Metode sputtering diaplikasikan untuk
mendepositkan nanopartikel PdAu pada graphene. Dari hasil pengujian scanning electron microscopy
(SEM) dan X-ray diffraction (XRD), reduktor Zn senilai 1.6 gram menunjukkan performa terbaik. Pada
pengujian elektrokimia dengan menggunakan cyclic voltammetry (CV) diperoleh densitas arus sebesar 80
mA/g dan potensial onset sebesar -0.58 V vs. Ag/AgCl.

Keywords

DMFC, elektrokatalis;graphene;logam berbasis Pd;reduktor Zn

Full Text:

PDF

References

L. Li, L. Xu, and Y. Wang, "Novel proton conducting composite membranes for direct methanol fuel cell," Materials Letters, vol. 57, pp. 1406-1410, 2003.

H. Liu and J. Zhang, Electrocatalysis of direct methanol fuel cells: from fundamentals to applications: Wiley-Vch, 2009.

R. Muntean, U. Rost, G. Marginean, and N. Vaszilcsin, "Determination of the electrochemical surface area for CNTs-PT electro catalyst using cyclic voltammetry," in Proceedings of 9th International Conference on Materials Science and Engineering? BRAMAT, Brasov, Romania, 2015.

L.-M. Luo, R.-H. Zhang, J.-J. Du, F. Yang, H.-M. Liu, Y. Yang, et al., "Studies on the synthesis and electrocatalytic properties of hollow PdAu nanocatalysts," International Journal of Hydrogen Energy, vol. 42, pp. 16139-16148, 2017.

M. Terrones, A. R. Botello-Méndez, J. Campos-Delgado, F. Lopez-Urias, Y. I. VegaCantú, F. J. Rodríguez-Macías, et al., "Graphene and graphite nanoribbons: Morphology, properties, synthesis, defects and applications," Nano today, vol. 5, pp. 351-372, 2010.

Y. Gao and P. Hao, "Mechanical properties of monolayer graphene under tensile and compressive loading," Physica E: Low-dimensional Systems and Nanostructures, vol. 41, pp. 1561-1566, 2009.

H. Zhang, X. Bo, and L. Guo, "Electrochemical preparation of Pt nanoparticles supported on porous graphene with ionic liquids: Electrocatalyst for both methanol oxidation and H2O2 reduction," Electrochimica Acta, vol. 201, pp. 117-124, 2016.

P. Wingelaar, J. Duarte, and M. Hendrix, "Dynamic characteristics of PEM fuel cells," in 2005 IEEE 36th Power Electronics Specialists Conference, 2005, pp. 1635-1641.

Z. Yin, M. Chi, Q. Zhu, D. Ma, J. Sun, and X. Bao, "Supported bimetallic PdAu nanoparticles with superior electrocatalytic activity towards methanol oxidation," Journal of Materials Chemistry A, vol. 1, pp. 9157-9163, 2013.

V. Singh, D. Joung, L. Zhai, S. Das, S. I. Khondaker, and S. Seal, "Graphene based materials: past, present and future," Progress in materials science, vol. 56, pp. 1178-1271, 2011.

S. Pei and H.-M. Cheng, "The reduction of graphene oxide," Carbon, vol. 50, pp. 3210-3228, 2012.

L. Tang, Y. Wang, Y. Li, H. Feng, J. Lu, and J. Li, "Preparation, structure, and electrochemical properties of reduced graphene sheet films," Advanced Functional Materials, vol. 19, pp. 2782-2789, 2009.

Y. Nuriana, D. Susanti, H. Purwaningsih, and T. M. Atmono, "Analisis Pengaruh Waktu Sputtering Pd dan Ni pada Sintesis Material Elektrokatalis Berbahan Pd-Ni/Graphene terhadap Unjuk Kerja Direct Methanol Fuel Cell (DMFC)," Jurnal Teknik ITS, vol. 6, pp. 96-101, 2017.

Refbacks

  • There are currently no refbacks.