Effect of reacting gas flowrates and hydration on the carbonation of anion exchange membrane fuel cells in the presence of CO2
Effect of reacting gas flowrates and hydration on the carbonation of anion exchange membrane fuel cells in the presence of CO2
复制标题
CO2 存在下反应气体流量和水合对阴离子交换膜燃料电池碳酸化的影响
DOI：
10.1016/j.jpowsour.2020.228350
复制
发表时间：
2020
影响因子：
9.2
通讯作者：
Mustain, W.E.
中科院分区：
文献类型：
--
作者：
Zheng, Yiwei;Huang, Garrett;Wang, Lianqin;Varcoe, John R.;Kohl, Paul A.;Mustain, W.E.
阴离子交换膜燃料电池（AEMFC）已被广泛吹捧为现有质子交换膜燃料电池的低成本替代品。然而，该技术的局限性之一是与将CO2引入电池相关的严重性能损失-通常在空气阴极进料中。将CO2引入AEMFC中会导致电池碳酸化，这会产生热力学、动力学和欧姆过电位，这些过电位可以加起来达到数百毫伏。因此，重要的是找到AEMFC的策略和操作协议，最大限度地减少这些过电位。在本文中，我们研究了阳极和阴极流量，以及细胞的水化水平，对细胞的碳酸化和细胞极化的程度的影响。主要发现包括：（1）降低阴极流速通常会降低与CO2相关的总电压损失，而改变阳极流速的影响最小;（2）增加电池水合有助于减轻CO2存在下的性能损失;（3）发现与现有文献相比，操作组合显著降低了CO2损失。
Anion exchange membrane fuel cells (AEMFCs) have been widely touted as a low-cost alternative to existing proton exchange membrane fuel cells. However, one of the limitations of this technology has been the severe performance penalty related to the introduction of CO2to the cell – typically in the air cathode feed. Introduction of CO2into AEMFCs results in cell carbonation, which imparts thermodynamic, kinetic and Ohmic overpotentials that can add up to hundreds of millivolts. Therefore, it is important to find strategies and operational protocols for AEMFCs that minimize these overpotentials. In this paper, we investigate the impacts of the anode and cathode flowrate, as well as the cell hydration level, on the extent of cell carbonation and cell polarization. Key findings include: (1) decreasing the cathode flowrate generally decreases the total CO2-related voltage loss while changing the anode flowrate has a minimal effect; (2) increasing cell hydration helps to mitigate the performance loss in the presence of CO2; and (3) operational combinations are found that significantly reduce the CO2penalty compared to the present literature.
影响因子：
2.5
作者：
Inaba, Minoru;Matsui, Yu;Yanagi, Hiroyuki
通讯作者：
Yanagi, Hiroyuki
二氧化碳存在下阴离子交换膜燃料电池的性能：自净化机制的研究
影响因子：
3.9
作者：
J. Wrubel;A. Peracchio;B. Cassenti;Kyle N. Grew;W. Chiu
通讯作者：
W. Chiu