DOI: 10.1016/j.jcou.2018.01.011
Scopus记录号: 2-s2.0-85042220231
论文题名: Upscaling and continuous operation of electrochemical CO2 to CO conversion in aqueous solutions on silver gas diffusion electrodes
作者: Jeanty P. ; Scherer C. ; Magori E. ; Wiesner-Fleischer K. ; Hinrichsen O. ; Fleischer M.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 24 起始页码: 454
结束页码: 462
语种: 英语
英文关键词: CO2-electrolysis
; Electrochemical CO2 to CO conversion
; Gas diffusion electrode
; Long-term run
Scopus关键词: Carbon dioxide
; Diffusion
; Diffusion in gases
; Electrodes
; Electrolytes
; Potash
; Silver
; Solutions
; CO conversion
; Continuous operation
; Electrochemical conversion
; Electrolyte penetration
; Faradaic efficiencies
; Gas diffusion electrodes
; Long-term run
; Scientific foundations
; Electrochemical electrodes
英文摘要: For the upscaling of the electrochemical conversion of CO2 to CO using Ag catalyst in water, gas diffusion electrodes (GDE) are needed for a sufficient supply of CO2 to obtain currents in the 100 mA cm−2 range. The effects of an upscale of one order of magnitude starting with 10 cm2 GDE size are presented. The penetration of electrolyte through the GDE needs to be regulated to balance the positive effects (avoid salt deposition) and the detrimental impacts (access blocking of CO2 to the GDE). Using a control of the partial pressure at the GDE to monitor the electrolyte penetration and enhancing CO2 feed by recirculation and turbulence promoters at the larger GDE. The first step of scale-up could be achieved without loss in performance. With three-compartment cells and 0.4 M K2SO4 electrolytes, the process is run at a current density of 150 mA cm−2 over a couple of hundred hours with a Faradaic efficiency for CO (FECO) of approximately 60% on 100 cm2 electrode area. It is discussed how to improve the performance by a management of the perspiration rate through the GDE to lay the scientific foundations for an industrial use of this technology. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111948
Appears in Collections: 气候减缓与适应
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作者单位: Corporate Technology, Siemens AG, Otto-Hahn-Ring 6, München, 81739, Germany; Department of Chemistry, Technische Universität München, Lichtenbergstr. 4, Garching b. München, 85747, Germany; Catalysis Research Center, Technische Universität München, Ernst-Otto-Fischer-Str. 1, Garching b. München, 85747, Germany
Recommended Citation:
Jeanty P.,Scherer C.,Magori E.,et al. Upscaling and continuous operation of electrochemical CO2 to CO conversion in aqueous solutions on silver gas diffusion electrodes[J]. Journal of CO2 Utilization,2018-01-01,24