Recent advances in electrode material for symmetrical solid oxide fuel cells and way forward sustainability based on local mineral resources
Muhammad Abdullah Md Harashid, Shan Chen, Sahrim Haji Ahmad, Aznan Fazli Ismail, Nurul Akidah Baharuddin
Abstract
Solid oxide fuel cells (SOFCs) are eco-friendly and yet highly efficient power generation devices. However, SOFCs face some commercial issues with durability, reliability, sustainability, and fabrication costs. In recent years, a unique design idea of symmetrical cell configuration of SOFCs with similar anode and cathode materials, commonly known as SSOFC or SFC has piqued the interest among researchers. The present review article attempts to comprehensive reported research related to the current development of new and promising advances in SSOFCs. Until now, most research on SSOFCs has focused on identifying appropriate materials for the system configuration electrodes. The progress and advances in structures and electrode materials for SSOFCs are summarised here. The electrical and electrochemical behaviours of SSOFCs as well as the performance comparisons with the common conventional SOFCs, in the aspect of electrode materials, are analysed and discussed. This review article provides a comprehensive data source for further investigation and exploration related to this topic towards sustainable, low-cost, and viable commercialisation of this green fuel cell, especially by utilising local minerals from one's country.