阳极
串联
催化作用
碳纤维
电化学
化学工程
功率密度
材料科学
阴极
法拉第效率
电极
化学
功率(物理)
复合数
有机化学
复合材料
物理
工程类
量子力学
物理化学
作者
Runze Wang,Guoqing Li,Yuyao Ma,Tengpeng Wang,Bin Chen,Tao Wei,Dehua Dong
标识
DOI:10.1016/j.ijhydene.2022.12.014
摘要
Hybrid direct carbon fuel cells (HDCFCs) are promising to achieve high power density, good fuel-electrode contact, and high carbon-fuel conversion efficiency due to increased reaction sites and hybrid routines of carbon utilization. However, the performance of HDCFC is greatly restricted by mass transfer and detrimental carbon deposition. The so-called CO–CO2 shuttle process, i. e., the coupling of the electrochemical reaction of CO to CO2 and subsequent discharge of CO2 towards the C fuel surface for gasification, is the key mass transfer process needed to be optimized. This study demonstrates a novel high-performance HDCFCs anode by integrating C-gasification tandem catalysis in dendritic channel anode support (t-HDCFCs), which greatly enhances the CO–CO2 shuttle and mitigates carbon deposition. As a result, the t-HDCFC delivers a comparable or even higher electrochemical performance than the other HDCFCs under the same operation conditions, such as a peak power density of 556 mW cm−2 at 750 °C.
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