Jurnal ITEKIMA
ISSN: 2548-947x
Vol.1, No.1, Februari 2017
PENGARUH GETARAN DAN TEMPERATUR UDARA TERHADAP KINERJA PROTON EXCHANGE MEMBRANE FUEL CELL (PEMFC)
(Effect of Vibration and Air Temperature on The Performance of Proton Exchange Membrane Fuel Cell (PEMFC))
Micha Mahardika1, Hary Devianto1 dan Isdiriayani Nurdin1
1Program Studi Teknik Kimia, Fakultas Teknologi Industri, Institut Teknologi Bandung
E-mail/telp: micha.mahardika@gmail.com/082115071308
ABSTRAK
Penggunaan bahan bakar fosil pada alat transportasi menghasilkan emisi gas beracun yang dapat merugikan lingkungan. Fuel cell merupakan suatu alat elektrokimia yang dapat mengkonversi energi kimia menjadi energi listrik secara langsung dengan produk samping berupa air. Proton exchange membrane fuel cell (PEMFC) merupakan salah satu jenis fuel cell yang cocok diaplikasikan pada alat transportasi karena mampu beroperasi pada tekanan dan temperatur rendah, stabil, dan berukuran relatif kecil. Kondisi jalan normal menghasilkan getaran pada alat transportasi dalam rentang 20-250 Hz. Selain itu, karena letak mesin terisolasi, sehingga temperatur udara berpengaruh signifikan. Penelitian ini difokuskan untuk mempelajari pengaruh getaran, temperatur udara, dan beban arus konstan. Kinerja dari PEMFC dianalisis secara elektrokimia menggunakan metode open circuit potential (OCP), chronopotentiometry, potentiodynamic, dan electrochemical impedance spectroscopy (EIS). Peningkatan temperatur, getaran, dan beban arus mengakibatkan menurunnya daya maksimum PEMFC, meningkatnya tahanan ohmic, impedansi perpindahan muatan dan perpindahan massa.
Kata kunci: PEMFC, getaran, temperatur udara, karakterisasi elektrokimia
ABSTRACT
The use of fossil fuels in transportation produces toxic gas which will damage the environment. Fuel cell is an electrochemical device that directly converts the chemical energy into electricity with water as by-product. Proton exchange membrane fuel cell (PEMFC) is one of fuel cell type that is suitable for electric vehicle because of its stability, small dimension as well as its capability to operate at low pressure and temperature. Condition of the normal road will produce vibrations on vehicles in the frequency range of 20-250 Hz. In addition, the confined location of machine causes a significant effect on air temperature. This research is focused on studying the effect of vibration, air temperature, and constant load. The performance of PEMFC was analyzed using electrochemical characterization methods, such as the open circuit potential (OCP), chronopotentiometry, potentiodynamic, and electrochemical impedance spectroscopy (EIS). Increasing of air temperature, vibration and constant load result in reduced power of PEMFC, increased ohmic polarization, increased impedance of charge transfer and increased impedance of mass transfer.
Key words: PEMFC, air temperature, vibration, electochemical characterization
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