Application of biochar derived from used cigarette filters in direct carbon solid oxide fuel cell. (29th June 2022)

• Record Type: Journal Article
• Authors: Tong, Xin; Hou, Junwei; Li, Yuzhi; Li, Hualing; Wu, Weichuang; Guo, Yanning; Liu, Yiying; Fu, Daishuang; Huang, Xingkai; Xiong, Zhe; Jiang, Jun; Qi, Long; Wang, Hailin; Cai, Weizi
• Is Part Of: International journal of hydrogen energy. Volume 47:Number 54(2022)
• Page Start: 22972
• Page End: 22980
• Publication Date: 2022-06-29
• Subjects: Direct carbon fuel cells -- Solid oxide fuel cell -- Carbon fuel -- Boudouard reaction -- Fe catalyst; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2022.05.102
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: As a typical waste, used cigarette filters (UCFs) are difficult to biodegrade and harmful to the environment. The direct carbon solid oxide fuel cell (DC-SOFC) is an energy conversion device that can utilize carbon directly, including biochar, as fuel. We report a superior DC-SOFC powered by Fe-loaded UCF biochar in this paper. The microstructure and composition are characterized, indicating that the UCF biochar is micron-sized and contains metal elements such as K and Ca that are beneficial to the performance of DC-SOFC. The peak power density of the cell fueled by pure UCF biochar is 308 mW cm −2 and increases to 341 mW cm −2 after loading Fe as the catalyst, which is comparable to that of the cell with Fe-loaded activated carbon (368 mW cm −2 ). It proves the feasibility of the UCF biochar as fuel for DC-SOFCs, providing a theoretical basis and technical demonstration for the disposal and transformation of solid waste. Highlights: A biochar derived from the used cigarette filters is applied as fuel in DC-SOFCs. DC-SOFC output increases from 308 to 341 mW cm −2 at 850 °C by Fe catalyst. Accumulated elements in used cigarette filters char acts as catalyst for Boudouard reaction. Fe-loaded UCF biochar is a promising fuel for DC-SOFC.