The effects of operating conditions on the performance of a direct carbon fuel cell

• Autorzy: Kacprzak A. , Kobylecki R. , Bis Z.
• Języki publikacji: EN

Abstrakty

EN

The influences of various operating conditions including cathode inlet air flow rate, electrolyte temperature and fuel particles size on the performance of the direct carbon fuel cell DCFC were presented and discussed in this paper. The experimental results indicated that the cell performance was enhanced with increases of the cathode inlet gas flow rate and cell temperature. Binary alkali hydroxide mixture (NaOH-LiOH, 90-10 mol%) was used as electrolyte and the biochar of apple tree origin carbonized at 873 K was used as fuel. Low melting temperature of the electrolyte and its good ionic conductivity enabled to operate the DCFC at medium temperatures of 723-773 K. The highest current density (601 A m^-2) was obtained for temperature 773 K and air flow rate 8.3 x 10⁶ m³s^-1. It was shown that too low or too high air flow rates negatively affect the cell performance. The results also indicated that the operation of the DCFC could be improved by proper selection of the fuel particle size.

Słowa kluczowe

EN

direct carbon fuel cell; biochar; molten hydroxide electrolyte; carbon anode; air cathode

PL

węglowe ogniwa paliwowe; biowęgiel; elektrolity stopionych wodorotlenków; anoda węglowa

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2013
• Tom: Vol. 34, no. 4
• Strony: 187--197
• Opis fizyczny: Bibliogr. 16 poz., il.

Twórcy

autor

Kacprzak A.

• Czestochowa University of Technology, Department of Energy Engineering, Brzeźnicka 60a, 42-200 Częstochowa, Poland

autor

Kobylecki R.

• Czestochowa University of Technology, Department of Energy Engineering, Brzeźnicka 60a, 42-200 Częstochowa, Poland

autor

Bis Z.

• Czestochowa University of Technology, Department of Energy Engineering, Brzeźnicka 60a, 42-200 Częstochowa, Poland

Bibliografia

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