DICP OpenIR
Breaking Long-Range Order in Iridium Oxide by Alkali Ion for Efficient Water Oxidation
Gao, Jiajian1; Xu, Cong-Qjao2; Hung, Sung-Fu3; Liu, Wei4; Cai, Weizheng1; Zeng, Zhiping1; Jia, Chunmiao1; Chen, Hao Ming3; Xiao, Hai2; Li, Jun2,5; Huang, Yanqiang4; Liu, Bin1
Corresponding AuthorLi, Jun(junli@tsinghua.edu.cn) ; Huang, Yanqiang(yqhuang@dicp.ac.cn) ; Liu, Bin(liubin@ntu.edu.sg)
Source PublicationJOURNAL OF THE AMERICAN CHEMICAL SOCIETY
2019-02-20
ISSN0002-7863
DOI10.1021/jacs.8b11456
Volume141Issue:7Pages:3014-3023
Funding ProjectSingapore Ministry of Education Academic Research Fund (AcRF) Tier 1[RG10/16] ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1[RG111/15] ; National Key R&D Program of China[2016YFA0202804] ; National Natural Science Foundation of China[21590792] ; National Natural Science Foundation of China[91645203] ; National Natural Science Foundation of China[21521091] ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 2[MOE2016-T2-2-004]
Funding OrganizationSingapore Ministry of Education Academic Research Fund (AcRF) Tier 1 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1 ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 2 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 2 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1 ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 2 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 2 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1 ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 2 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 2 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1 ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 2 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 2
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordOXYGEN EVOLUTION REACTION ; TOTAL-ENERGY CALCULATIONS ; ELECTRONIC-STRUCTURE ; TAFEL LINES ; IRO2 ; ELECTROCATALYSTS ; MECHANISM ; KINETICS ; NANOPARTICLES ; CATALYSTS
AbstractOxygen electrochemistry plays a critical role in clean energy technologies such as fuel cells and electrolyzers, but the oxygen evolution reaction (OER) severely restricts the efficiency of these devices due to its slow kinetics. Here, we show that via incorporation of lithium ion into iridium oxide, the thus obtained amorphous iridium oxide (Li-IrOx) demonstrates outstanding water oxidation activity with an OER current density of 10 mA/cm(2) at 270 mV overpotential for 10 h of continuous operation in acidic electrolyte. DFT calculations show that lithium incorporation into iridium oxide is able to lower the activation barrier for OER X-ray absorption characterizations indicate that both amorphous Li-IrOx and rutile IrO2 own similar [IrO6] octahedron units but have different [IrO6] octahedron connection modes. Oxidation of iridium to higher oxidation states along with shrinkage in the Ir-O bond was observed by in situ X-ray absorption spectroscopy on amorphous Li-IrOx, but not on rutile IrO2 under OER operando conditions. The much more "flexible" disordered [IrO6] octahedrons with higher oxidation states in amorphous Li-IrOx as compared to the periodically interconnected "rigid" [IrO6] octahedrons in crystalline IrO2 are able to act as more electrophilic centers and thus effectively promote the fast turnover of water oxidation.
Language英语
Funding OrganizationSingapore Ministry of Education Academic Research Fund (AcRF) Tier 1 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1 ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 2 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 2 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1 ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 2 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 2 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1 ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 2 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 2 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1 ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 2 ; Singapore Ministry of Education Academic Research Fund (AcRF) Tier 2
WOS IDWOS:000459642000035
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/165999
Collection中国科学院大连化学物理研究所
Corresponding AuthorLi, Jun; Huang, Yanqiang; Liu, Bin
Affiliation1.Nanyang Technol Univ, Sch Chem & Biomed Engn, 62 Nanyang Dr, Singapore 637459, Singapore
2.Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
3.Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan
4.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Peoples R China
5.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China
Recommended Citation
GB/T 7714
Gao, Jiajian,Xu, Cong-Qjao,Hung, Sung-Fu,et al. Breaking Long-Range Order in Iridium Oxide by Alkali Ion for Efficient Water Oxidation[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2019,141(7):3014-3023.
APA Gao, Jiajian.,Xu, Cong-Qjao.,Hung, Sung-Fu.,Liu, Wei.,Cai, Weizheng.,...&Liu, Bin.(2019).Breaking Long-Range Order in Iridium Oxide by Alkali Ion for Efficient Water Oxidation.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,141(7),3014-3023.
MLA Gao, Jiajian,et al."Breaking Long-Range Order in Iridium Oxide by Alkali Ion for Efficient Water Oxidation".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 141.7(2019):3014-3023.
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