CAS OpenIR
Enhanced Water Desalination by Increasing the Electroconductivity of Carbon Powders for High-Performance Flow-Electrode Capacitive Deionization
Tang, Kexin1,2,3; Yiacoumi, Sotira1; Li, Yuping2; Tsouris, Costas1,4
2019-01-07
Source PublicationACS SUSTAINABLE CHEMISTRY & ENGINEERING
ISSN2168-0485
Volume7Issue:1Pages:1085-1094
AbstractFlow-electrode capacitive deionization (FCDI) can be improved via enhanced charge transfer by increasing the flow-electrode (FE) conductivity. Since water is the main component of FE (>70%), the key to improving the electroconductivity lies in the properties of carbon materials. In this work, three types of carbon powders, i.e., activated carbon (AC), mesoporous carbon, and carbon nanotubes (CNTs), were employed in FEs to investigate the influence of powder properties on the FCDI performance. The morphology and structure of powders and electrochemical behavior and rheology of FEs were investigated to reveal the relationship between FE properties and desalination performance. Results show that, due to their unique electrosorption behavior, excellent conductivity, and enhanced conductivity through a bridging effect, CNT-based FE (carbon loading: 3 wt %) achieved the fastest (8.3 mg s(-1) m(-2)) and the most stable desalination (charge efficiency: 93.3%). A faster desalination (13.2 mg s(-1) m(-2)), due to significantly improved electroconductivity (13.2 times) with only a slight viscosity increase (1.1 times), was achieved by adding CNTs into 6.91 wt % AC-based concentration. This study highlights the importance of the intrinsic properties electroconductivity, in promoting FCDI desalination performance.
KeywordFlow-electrode capacitive deionization Carbon nanotubes Desalination Electrochemical impedance spectroscopy Charge/ion transfer
DOI10.1021/acssuschemeng.8b04746
Language英语
WOS KeywordANION-EXCHANGE MEMBRANE ; SUSPENSION ELECTRODES ; NANOTUBES ; VOLTAGE ; SUPERCAPACITOR ; DISPERSION ; EFFICIENT ; BINDER
Funding ProjectUS Department of Energy[DE-AC05-00OR22725] ; School of Civil and Environmental Engineering of the Georgia Institute of Technology[51425405] ; School of Civil and Environmental Engineering of the Georgia Institute of Technology[21377130] ; National Natural Science Foundation of China (NSFC)[51425405] ; National Natural Science Foundation of China (NSFC)[21377130] ; China Scholarship Council (CSC)[201606250079] ; Laboratory Directed Research and Development Program of the Oak Ridge National Laboratory ; Department of Energy
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Engineering
WOS SubjectChemistry, Multidisciplinary ; Green & Sustainable Science & Technology ; Engineering, Chemical
Funding OrganizationUS Department of Energy ; School of Civil and Environmental Engineering of the Georgia Institute of Technology ; National Natural Science Foundation of China (NSFC) ; China Scholarship Council (CSC) ; Laboratory Directed Research and Development Program of the Oak Ridge National Laboratory ; Department of Energy
WOS IDWOS:000455288800113
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:35[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/27759
Collection中国科学院过程工程研究所
Corresponding AuthorTsouris, Costas
Affiliation1.Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA
2.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, Div Environm Technol & Engn, Beijing 100190, Peoples R China
3.Tianjin Univ, Sch Chem Engn & Technol, Natl Engn Res Ctr Distillat Technol, Tianjin 300072, Peoples R China
4.Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
Recommended Citation
GB/T 7714
Tang, Kexin,Yiacoumi, Sotira,Li, Yuping,et al. Enhanced Water Desalination by Increasing the Electroconductivity of Carbon Powders for High-Performance Flow-Electrode Capacitive Deionization[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2019,7(1):1085-1094.
APA Tang, Kexin,Yiacoumi, Sotira,Li, Yuping,&Tsouris, Costas.(2019).Enhanced Water Desalination by Increasing the Electroconductivity of Carbon Powders for High-Performance Flow-Electrode Capacitive Deionization.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,7(1),1085-1094.
MLA Tang, Kexin,et al."Enhanced Water Desalination by Increasing the Electroconductivity of Carbon Powders for High-Performance Flow-Electrode Capacitive Deionization".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 7.1(2019):1085-1094.
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