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Insight of anode reaction for CWS (coal water slurry) electrolysis for hydrogen production
Ge, Lan1; Gong, Xuzhong1; Wang, Zhi1; Zhao, Lixin2; Wang, Yuhua1; Wang, Mingyong1; Gong, XZ
2016-02-01
Source PublicationENERGY
ISSN0360-5442
Volume96Issue:FEBPages:372-382
AbstractMechanism of CWS (coal water slurry) electrolysis was investigated by using anode reaction kinetics. The results indicated that the activation energies of electrode reaction reduce with the increase in activity of carbon materials. According to the electrode reaction kinetics, the direct oxidation of CWS electrolysis occurred easily under lower concentration of electrolyte and higher concentration of CWS. On the contrary, the indirect oxidation of CWS electrolysis took place. Because of the high oxygen evolution potential of water electrolysis in H2SO4 solution (1.23 V), the direct oxidation of CWS electrolysis mainly occurred under water decomposition potential (0.5-1.23 V). As NaOH solution was used as electrolyte, it was difficult to distinguish direct and indirect oxidation under the low potential (0.4 V). With increasing stirring rate, the electrode reaction activation energies of GWS (graphite water slurry) electrolysis increased slightly and were always lower than 40 kJ/mol. The results indicated that GWS electrolysis was controlled by diffusion and the increase in stirring rate could not reduce the polarization. (C) 2015 Elsevier Ltd. All rights reserved.
KeywordCoal Water Slurry Electrolysis Electrode Reaction Activation Energy Direct Oxidation Indirect Oxidation
SubtypeArticle
Subject AreaThermodynamics ; Energy & Fuels ; Thermodynamics ; Energy & Fuels
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.energy.2015.12.077
URL查看原文
Indexed BySCI
Language英语
WOS KeywordELECTROCHEMICAL GASIFICATION ; INTERMEDIATE TEMPERATURES ; OXIDATION ; KINETICS ; SYSTEM ; CARBON ; TECHNOLOGIES ; FEASIBILITY ; CATALYSTS ; REMOVAL
WOS Research AreaThermodynamics ; Energy & Fuels
WOS SubjectThermodynamics ; Energy & Fuels
Funding OrganizationNatural Science Foundation of China(51004090 ; State Key Laboratory of Advanced Metallurgy(KF13-03) ; Youth Innovation Promotion Association, CAS(2015036) ; 51474198)
WOS IDWOS:000370886700034
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/20675
Collection研究所(批量导入)
Corresponding AuthorGong, XZ
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Tianjin Univ Technol, Dept Environm Sci & Safety Engn, Tianjin 300384, PR, Peoples R China
Recommended Citation
GB/T 7714
Ge, Lan,Gong, Xuzhong,Wang, Zhi,et al. Insight of anode reaction for CWS (coal water slurry) electrolysis for hydrogen production[J]. ENERGY,2016,96(FEB):372-382.
APA Ge, Lan.,Gong, Xuzhong.,Wang, Zhi.,Zhao, Lixin.,Wang, Yuhua.,...&Gong, XZ.(2016).Insight of anode reaction for CWS (coal water slurry) electrolysis for hydrogen production.ENERGY,96(FEB),372-382.
MLA Ge, Lan,et al."Insight of anode reaction for CWS (coal water slurry) electrolysis for hydrogen production".ENERGY 96.FEB(2016):372-382.
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