CAS OpenIR
Pressure intensified HO center dot evolution from OER and electrolysis desulfurization
Zhang, Tong1,2; Zhou, Yujian1; Hu, Yingnan1,2; Wang, Zhi1; Liu, Junhao1; Qian, Guoyu1; Gong, Xuzhong1,2
2019-09-20
Source PublicationELECTROCHIMICA ACTA
ISSN0013-4686
Volume318Pages:202-210
AbstractTo strengthen the formation of Hydroxyl radical (HO center dot) on anode, pressurized water electrolysis under constant temperature were carried out in this work. The HO center dot formation was verified by electrochemistry-electron spin resonance (ESR) and bauxite desulfurization in the same pressurized reactor with different cell designs. With increasing pressure, the current density was increased. However, the equilibrium potential of anode and the initial potential of oxygen evolution reaction (OER) were negative shifted with increasing pressure. Results revealed that pressure promoted the early steps of OER but inhibited subsequent transformation. The apparent transfer coefficient of the anode (b(a) and b(c)) further proved that the pressure play a positive role on the OER reserve reaction and promoted the formation of HO center dot. R-ct and R-s were all decreased with increasing pressure, demonstrating that pressure improved the mass transfer and reaction of the OER. The electrolysis desulfurization and ESR experiments have clearly supported the positive role of pressure on strengthening the HO center dot formation. From electrolysis with 0.1 MPa, HO center dot signal was detected by ESR when constant potential was 0.8 V on anode, while the signal arose at 0.7 V under 1.0MPa, indicating that HO center dot was formed in advance under pressure. (C) 2019 Elsevier Ltd. All rights reserved.
KeywordHO $OER Pressure Electrolysis Desulfurization
DOI10.1016/j.electacta.2019.06.080
Language英语
WOS KeywordOXYGEN REDUCTION REACTION ; HIGH-TEMPERATURE ; WASTE-WATER ; FLUE-GAS ; ELECTROCHEMICAL OXIDATION ; HYDROXYL RADICALS ; PERFORMANCE ; GENERATION ; REACTIVITY ; HYDROGEN
Funding ProjectNatural Science Foundation of China[51474198] ; Natural Science Foundation of China[21878299] ; Natural Science Foundation of China[51422405]
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
Funding OrganizationNatural Science Foundation of China
WOS IDWOS:000478969600022
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/30524
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Zhi; Gong, Xuzhong
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Tong,Zhou, Yujian,Hu, Yingnan,et al. Pressure intensified HO center dot evolution from OER and electrolysis desulfurization[J]. ELECTROCHIMICA ACTA,2019,318:202-210.
APA Zhang, Tong.,Zhou, Yujian.,Hu, Yingnan.,Wang, Zhi.,Liu, Junhao.,...&Gong, Xuzhong.(2019).Pressure intensified HO center dot evolution from OER and electrolysis desulfurization.ELECTROCHIMICA ACTA,318,202-210.
MLA Zhang, Tong,et al."Pressure intensified HO center dot evolution from OER and electrolysis desulfurization".ELECTROCHIMICA ACTA 318(2019):202-210.
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