堆栈(抽象数据类型)
电解质
阳极
固体氧化物燃料电池
材料科学
碳纤维
氧化物
功率密度
电极
化学工程
电气工程
化学
功率(物理)
复合材料
计算机科学
工程类
复合数
冶金
物理
热力学
物理化学
程序设计语言
作者
Tianyu Chen,Zhibin Lu,Guoxun Zeng,Yongmin Xie,Jie Xiao,Zhifeng Xu
标识
DOI:10.1016/j.jpowsour.2023.233886
摘要
The direct carbon solid oxide fuel cell (DC-SOFC) is a new-type energy conversion device that converts chemical energy stored in solid carbon into electricity efficiently with environmental benignity and low cost for abundant carbon resources, which reveals upward impetus recently. To accelerate the practical application of DC-SOFC, here, we report a high-performance La0.9Sr0.1Ga0.8Mg0.2O3−δ (LSGM) electrolyte-supported tubular DC-SOFC stack for portable applications, in which Ag– Ce0.8Gd0.2O1.9 (Ag-GDC) is used as symmetrical electrodes and camellia oleifera shell char as fuel. The performance of the 3-cell-stack stands out, with an open circuit voltage (OCV) of 3.18 V, an output power of 2.65 W, and a maximum volumetric power density of 605 mW cm−3 at 800 °C. In addition, the stack can survive for 5.82 and 1.12 h under the constant discharging currents of 200 and 800 mA, respectively, exhibiting discharge capacities of 3492 and 2688 mA h. Furthermore, adopting the external anode design can sextuple the fuel load and lead to remarkably improved output performance, discharge time, and discharge capacity of the stack (3.71 W, 9.2 h, 22080 mA h). The above results indicate that LSGM electrolyte-supported tubular DC-SOFC stacks show great potential for developing into high-performing, efficient, and environmentally friendly portable power sources for distributed applications.
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