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High-Valence Nickel Single-Atom Catalysts Coordinated to Oxygen Sites for Extraordinarily Activating Oxygen Evolution Reaction
Li, YG; Wu, ZS; Lu, PF; Wang, X; Liu, W; Liu, ZB; Ma, JY; Ren, WC; Jiang, Z; Bao, XH
2020
Source PublicationADVANCED SCIENCE
ISSN2198-3844
Volume7Issue:5Pages:-
Subtype期刊论文
AbstractSingle-atom catalysts (SACs) are efficient for maximizing electrocatalytic activity, but have unsatisfactory activity for the oxygen evolution reaction (OER). Herein, the NaCl template synthesis of individual nickel (Ni) SACs is reported, bonded to oxygen sites on graphene-like carbon (denoted as Ni-O-G SACs) with superior activity and stability for OER. A variety of characterizations unveil that the Ni-O-G SACs present 3D porous framework constructed by ultrathin graphene sheets, single Ni atoms, coordinating nickel atoms to oxygen. Consequently, the catalysts are active and robust for OER with extremely low overpotential of 224 mV at current density of 10 mA cm(-2), 42 mV dec(-1) Tafel slope, oxygen production turn over frequency of 1.44 S-1 at 300 mV, and long-term durability without significant degradation for 50 h at exceptionally high current of 115 mA cm(-1), outperforming the state-of-the-art OER SACs. A theoretical simulation further reveals that the bonding between single nickel and oxygen sites results in the extraordinary boosting of OER performance of Ni-O-G SACs. Therefore, this work opens numerous opportunities for creating unconventional SACs via metal-oxygen bonding.
KeywordMETAL-ORGANIC FRAMEWORKS GRAPHENE OXIDE EFFICIENT ELECTROCATALYSTS CARBON REDUCTION HYDROGEN HYBRID NI NANOPARTICLES
DOI10.1002/advs.201903089
Indexed BySCI ; EI
Language英语
Citation statistics
Cited Times:62[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/32911
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, 457 Zhongshan Rd, Dalian 116023, Peoples R China
2.Hebei Univ, Coll Phys Sci & Technol, Hebei Key Lab Opt Informat & Mat, Baoding 071002, Peoples R China
3.Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
5.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China
6.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Li, YG,Wu, ZS,Lu, PF,et al. High-Valence Nickel Single-Atom Catalysts Coordinated to Oxygen Sites for Extraordinarily Activating Oxygen Evolution Reaction[J]. ADVANCED SCIENCE,2020,7(5):-.
APA Li, YG.,Wu, ZS.,Lu, PF.,Wang, X.,Liu, W.,...&Bao, XH.(2020).High-Valence Nickel Single-Atom Catalysts Coordinated to Oxygen Sites for Extraordinarily Activating Oxygen Evolution Reaction.ADVANCED SCIENCE,7(5),-.
MLA Li, YG,et al."High-Valence Nickel Single-Atom Catalysts Coordinated to Oxygen Sites for Extraordinarily Activating Oxygen Evolution Reaction".ADVANCED SCIENCE 7.5(2020):-.
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