混合金属氧化物在电容去离子中的应用
江西农业大学, 国土资源与环境学院, 江西南昌 330045
| 摘 要： | 水净化技术的研究与开发可有效缓解水资源短缺造成的影响。电容去离子技术（Capacitive deionization，CDI）是一种新型水处理技术，通过施加低电压，使溶液中的离子被电极吸附形成双电层以去除水中的污染物。而电极材料是影响CDI处理效果的主要因素。目前传统的CDI电极主要集中于碳基材料的研究，但其有效比表面积低、制备流程复杂、电阻大等限制了CDI在实际废水处理中的应用。而混合金属氧化物因其具有反应活性高、比电容大和导电率强等优异的电化学性能，成为CDI电极材料研究和应用的新热点。但目前针对其在CDI中的研究与应用归纳的文章较少。所以，该文以多元金属氧化物的种类为脉络，综述了混合金属氧化物电极及其复合电极在CDI中应用的最新研究进展、存在问题及应用发展。 |
| 关 键 词： | 电容去离子; 电极材料; 多元金属氧化物; 脱盐 |
| DOI： | 10.57237/j.wjese.2023.02.003 |
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收稿日期: 2023-02-16
接受日期: 2023-03-15
在线出版日期: 2023-03-28
Polymetallic Clusters in Capacitive Deionization
College of Land Resources and Environment, Jiangxi Agricultural University, Nanchang 330045, China
| Abstract: | Research and development of water purification technology can effectively alleviate the impact of water shortage. Capacitive deionization technology (CDI) is a novel water treatment technology, by applying low voltage, ions in solution are absorbed by electrodes to form double electric layers to remove pollutants in water. Electrode material is the main factor affecting the effect of CDI treatment. At present, the traditional CDI electrodes mainly focus on the research of carbon materials and carbon-based composites materials. However, their low effective specific surface area, complex preparation process and high resistance limit their application in practical wastewater treatment. Mixed metal oxides have become a new hotspot in the research and application of CDI electrode materials due to their excellent electrochemical properties, such as high reactivity, large specific capacitance and strong conductivity. However, there are few articles on its research and application in CDI. Therefore, this paper reviews the latest research progress, existing problems and application development of mixed metal oxide electrodes and their composite electrodes in the context of the types of polymetallic oxides. |
| Keywords: | Capacitive Deionization; Electrode Materials; Multiple Metal Oxides; Desalination |
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