Comparative study on the electrochemical performance of coals and coal chars in a molten carbonate direct carbon fuel cell with a novel anode structure

被引：8
作者：
Bie, Kang [1 ]
Fu, Peifang [1 ,2 ]
Liu, Yang [1 ]
Muhammad, Ahsan [1 ]
Xu, Tianyao [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Energy & Power Engn, State Key Lab Coal Combust, Wuhan 430074, Peoples R China
[2] Huazhong Univ Sci & Technol, State Key Lab Coal Combust, Wuhan 430074, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2023年 / 48卷 / 27期
基金：
中国国家自然科学基金;
关键词：
Direct carbon fuel cell; Molten carbonate; Electrochemical performance; Coal char; Coal; BITUMINOUS COAL; ACTIVATED CARBON; BEHAVIOR;
D O I：
10.1016/j.ijhydene.2022.12.144
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Molten carbonate direct carbon fuel cells (MC-DCFCs) allow the efficient and clean use of coal. In this study, a novel anode structure is designed, and the performances of six coal -based fuels are investigated in MC-DCFC. The mechanisms of performance differences are investigated, as well as the effect of operating temperature on performance. The results reveal the fuel cell performance in the following order: meagre coal (109.8) z bituminous coal (108.7) > bituminous coal char (98.1) > lignite coal (83.7) > lignite coal char (71.3) > meagre coal char (53.2) in mW cm-2. Coal performs better because of its high carbon content, high volatile content, rich oxygen-containing functional groups, larger specific surface area, stronger thermal reactivity, and other factors. The electrochemical reactivity of coal fuel increased with higher reaction temperatures and varied throughout the temperature ranges. This study implies that using coal fuel to commercialize MC-DCFC could be a realistic alternative.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：10191 / 10202
页数：12
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