4.7 Article

Experimental Study of Electronic and Ionic Conductivity of a Carbon-Based Slurry Electrode Used in Advanced Electrochemical Energy Systems

期刊

ACS APPLIED ENERGY MATERIALS
卷 5, 期 9, 页码 11413-11430

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acsaem.2c01875

关键词

slurry electrode; electronic conductivity; ionic conductivity; slurry concentration; flow channel geometry; slurry flow rate

资金

  1. Australian Renewable Energy Agency (ARENA) [RE-03525]
  2. project partners-Eldor Cor-poration, Institute for Carbon-Neutral Energy Research, Kyushu University - RMIT University, Australia
  3. nstitute for Carbon-Neutral Energy Research, Kyushu University
  4. RMIT Research Stipend Scholarships (RRSS) - RMIT University, Australia

向作者/读者索取更多资源

This study focuses on the application of carbon slurry electrodes in advanced electrochemical power and energy storage systems, and experimentally investigates the electrical conductivity of such electrodes. The results show that increasing carbon loading can significantly enhance the electronic conductivity, while the flow channel geometry and slurry concentration also have an influence on the conductivity. These findings are important for optimizing the working conditions of slurry electrodes.
Focusing on the application of carbon slurry electrodes in advanced electrochemical power and energy storage systems, the electrical conductivity of such electrodes is thoroughly investigated experimentally. A slurry electrode made from steam-activated Norit is analyzed to estimate its electronic and ionic conductivities separately. A single-pass rectangular flow channel with three different widths of 4.1, 3.6, and 3.1 cm is used to investigate the effect of the flow channel geometry on slurry electrode conductivity. Three different slurry concentrations of 5, 10, and 15 wt % are investigated, while electronic and ionic conductivities are separately measured using distilled water and sulfuric acid as electrolytes. The charge conduction improvement due to the availability of more charge-carrying particles in the slurry is quantified, and it is shown that up to about 220 and 120% increase in electronic conductivities can be achieved by increasing carbon loading from 5 to 10 and 15 wt %, respectively. Analysis of slurry conductivity variations from a static condition to a flow rate of 280 mL min-1 with different channel widths and concentrations shows that the slurry conductivity reaches a maximum value at an intermediate flow rate and is then gradually decreased. The optimum working condition of a slurry electrode is finally discussed.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据