Continuous operation of membrane capacitive deionization cells assembled with dissimilar potential of zero charge electrode pairs.
Continuous operation of membrane capacitive deionization cells assembled with dissimilar potential of zero charge electrode pairs.
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DOI：
10.1016/j.jcis.2014.11.013
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发表时间：
2015-05
影响因子：
9.9
通讯作者：
A. Omosebi;Xin Gao;Jeffery Rentschler;J. Landon;Kunlei Liu
中科院分区：
文献类型：
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作者：
A. Omosebi;Xin Gao;Jeffery Rentschler;J. Landon;Kunlei Liu
对配备原始和硝酸氧化 Zorflex (ZX) 电极对的单叠层膜辅助电容去离子电池的性能进行了评估。原始电极和氧化电极的零电荷电位相对于 SCE 分别为 -0.2 V 和 0.2 V。研究了四种电极电池组合，包括原始阳极-原始阴极、氧化阳极-原始阴极、原始阳极-氧化阴极和氧化阳极-氧化阴极。当 PZC 位于电极的极化窗口内时，观察到性能下降。电池在 1.2 V 下运行，根据电位分布结果，原始阳极-原始阴极、氧化阳极-原始阴极、原始阳极-氧化阴极和氧化阳极-氧化阴极电池的有效工作电位分别为 ~0.9、0.8、1.2 和 1.1 V。对于原始阳极氧化阴极电池，观察到最高电吸附容量为 17 mg NaCl/g ZX，其中两个 PZC 均位于极化窗口之外。
The performance of single stack membrane assisted capacitive deionization cells configured with pristine and nitric acid oxidized Zorflex (ZX) electrode pairs was evaluated. The potentials of zero charge for the pristine and oxidized electrodes were respectively −0.2 V and 0.2 V vs. SCE. Four cell combinations of the electrodes including a pristine anode-pristine cathode, oxidized anode-pristine cathode, pristine anode-oxidized cathode, and oxidized anode-oxidized cathode were investigated. When the PZC was located within the polarization window of the electrode, diminished performance was observed. The cells were operated at 1.2 V and based on potential distribution results, the effective working potentials were ∼0.9, 0.8, 1.2, and 1.1 V for the pristine anode-pristine cathode, oxidized anode-pristine cathode, pristine anode-oxidized cathode, and oxidized anode-oxidized cathode cells, respectively. The highest electrosorption capacity of 17 mg NaCl/g ZX was observed for the pristine anode-oxidized cathode cell, where both PZCs were outside of the polarization window.