CO2 electroreduction enhanced by transitional layer at cathode/electrolyte interface
CO2 electroreduction enhanced by transitional layer at cathode/electrolyte interface
复制标题
阴极/电解质界面过渡层增强 CO2 电还原
DOI：
10.1016/j.jpowsour.2020.227743
复制
发表时间：
2020-03
期刊：
影响因子：
--
通讯作者：
Yang Weishen
中科院分区：
文献类型：
--
作者：
Zhang Lixiao;Hu Shiqing;Li Wenping;Zhang Peng;Cao Zhongwei;Zhu Xuefeng;Yang Weishen
通过焙烧-剥离-焙烧的方法在La0.75Sr0.25Cr0.5Mn0.5O3-δ Gd0.1Ce0.9O1.95（LSCM-GDC）阴极和YSZ（8mol%Y2 O3稳定的ZrO 2）电解质之间引入过渡层，以改善电池的CO2电还原性能。研究了第二次煅烧温度和过渡层中LSCM/GDC重量比的影响，以了解过渡层的作用。实验结果表明，过渡层能有效地降低阴极极化电阻。在800-1200 °C的温度范围内，电池性能随着第二煅烧温度的增加而增加，但在更高的第二煅烧温度下降低。在第二次煅烧温度为1200 °C、过渡层中LSCM/GDC的重量比为1：1时，获得最佳性能。与没有过渡层的电池相比，具有过渡层的优化电池的电流密度在各种施加电压下提高了约50%。此外，根据弛豫时间分布的计算结果和实验结果，认为过渡层的引入增强了氧物种在三相边界的扩散和交换过程，从而提高了性能。
A transitional layer is introduced between the La0.75Sr0.25Cr0.5Mn0.5O3-δ˗Gd0.1Ce0.9O1.95(LSCM-GDC) cathode and the YSZ (8 mol% Y2O3stabilized ZrO2) electrolyte by a calcining-stripping-calcining method to improve the cell performance for CO2electroreduction. The effects of second calcination temperature and the LSCM/GDC weight ratio in the transitional layer are investigated to understand the role of the transitional layer. Experimental results reveal that the transitional layer is effective to decrease the cathodic polarization resistance. The cell performance increases with increasing the second calcination temperature in the temperature range of 800–1200 °C, but decreases at a higher second calcination temperature. The optimal performance is achieved at the second calcination temperature of 1200 °C and the LSCM/GDC weight ratio of 1:1 in the transitional layer. The current densities of the optimized cell with a transitional layer are improved by approximately 50% at various applied voltages compared to the cell without the transitional layer. Besides, based on the calculation results of distribution of the relaxation time and the experimental results, the performance improvement is related to the enhancement of the diffusion and exchange processes of the oxygen species at the three phase boundaries after the introduction of the transitional layer.
登录
查看更多内容
影响因子：
4
作者：
Zhidong Huang;L. Shang;Huiying Qi;Zhe Zhao;Baofeng Tu;Weishen Yang;Mojie Cheng
通讯作者：
Zhidong Huang;L. Shang;Huiying Qi;Zhe Zhao;Baofeng Tu;Weishen Yang;Mojie Cheng
固体氧化物电解槽中模拟烟气的高温电解
影响因子：
6.6
作者：
Yifeng Zheng;Juan Zhou;Lan Zhang;Qinglin Liu;Zehua Pan;Siew Hwa Chan
通讯作者：
Siew Hwa Chan
用于固体氧化物燃料电池应用的膜辅助丙烷部分氧化
影响因子：
9.2
作者：
He Zhenyu;Li Chaoqun;Chen Chusheng;Tong Yongcheng;Luo Ting;Zhan Zhongliang
通讯作者：
Zhan Zhongliang
在固体氧化物电解槽中高效电化学重整 CH4/CO2
影响因子：
13.6
作者：
Lu J;Zhu C;Pan C;Lin W;Lemmon JP;Chen F;Li C;Xie K
通讯作者：
Xie K
影响因子：
5.6
作者：
P. Vágner;R. Kodým;K. Bouzek
通讯作者：
P. Vágner;R. Kodým;K. Bouzek