Open AccessDirect internal methane reforming in biogas fuelled solid oxide fuel cell; the influence of operating parameters
Author(s) -
Saadabadi S. Ali,
Illathukandy Biju,
Aravind Purushothaman Vellayani
Publication year - 2021
Publication title -
energy science and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.638
H-Index - 29
ISSN - 2050-0505
DOI - 10.1002/ese3.887
Subject(s) - methane , anode , solid oxide fuel cell , biogas , materials science , carbon dioxide reforming , cermet , chemical engineering , syngas , carbon fibers , power density , electrolyte , oxide , waste management , chemistry , electrode , catalysis , composite material , metallurgy , organic chemistry , ceramic , power (physics) , physics , quantum mechanics , composite number , engineering
Internal dry reforming (IDR) of methane for biogas‐fed solid oxide fuel cell (SOFC) applications has been experimentally investigated on planar Ni‐GDC (cermet anode) electrolyte‐supported cells. This study focuses on the effect of CO 2 concentration, current density, operating temperature, and residence time on internal methane dry reforming. A single cell is fed with different CH 4 /CO 2 mixture ratios between 0.6 and 1.5. Extra CO 2 recovered from carbon capture plants can be utilized here as a reforming agent. The I‐V characterization curves are recorded at different operating conditions in order to determine the best electrochemical performance while the power production is maximized, and carbon deposition is suppressed. The outlet gas from the anode is analyzed by a micro gas chromatograph to investigate methane conversion inside the anode fuel channel and to understand its influence on the cell performance. Relatively long‐term experiments have been performed for all gas mixtures at 850°C under a current density of 2000 A m −2 . The results indicate that when the cell is fed with biogas with an equimolar amount of CH 4 and CO 2 , carbon deposition is prevented, and maximum power density is obtained.