101
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Zhu J, Chen Z, Xie M, Lyu Z, Chi M, Mavrikakis M, Jin W, Xia Y. Iridium‐Based Cubic Nanocages with 1.1‐nm‐Thick Walls: A Highly Efficient and Durable Electrocatalyst for Water Oxidation in an Acidic Medium. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901732] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jiawei Zhu
- The Wallace H. Coulter Department of Biomedical EngineeringGeorgia Institute of Technology and Emory University Atlanta GA 30332 USA
- State Key Laboratory of Materials-Oriented Chemical EngineeringCollege of Chemical EngineeringNanjing Tech University Nanjing Jiangsu 211816 China
| | - Zitao Chen
- The Wallace H. Coulter Department of Biomedical EngineeringGeorgia Institute of Technology and Emory University Atlanta GA 30332 USA
- Center for Nanophase Materials SciencesOak Ridge National Laboratory Oak Ridge TN 37831 USA
| | - Minghao Xie
- School of Chemistry and BiochemistryGeorgia Institute of Technology Atlanta GA 30332 USA
| | - Zhiheng Lyu
- School of Chemistry and BiochemistryGeorgia Institute of Technology Atlanta GA 30332 USA
| | - Miaofang Chi
- Center for Nanophase Materials SciencesOak Ridge National Laboratory Oak Ridge TN 37831 USA
| | - Manos Mavrikakis
- Department of Chemical and Biological EngineeringUniversity of Wisconsin-Madison Madison WI 53706 USA
| | - Wanqin Jin
- State Key Laboratory of Materials-Oriented Chemical EngineeringCollege of Chemical EngineeringNanjing Tech University Nanjing Jiangsu 211816 China
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical EngineeringGeorgia Institute of Technology and Emory University Atlanta GA 30332 USA
- School of Chemistry and BiochemistryGeorgia Institute of Technology Atlanta GA 30332 USA
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102
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Yim G, Kang S, Kim YJ, Kim YK, Min DH, Jang H. Hydrothermal Galvanic-Replacement-Tethered Synthesis of Ir-Ag-IrO 2 Nanoplates for Computed Tomography-Guided Multiwavelength Potent Thermodynamic Cancer Therapy. ACS NANO 2019; 13:3434-3447. [PMID: 30860814 DOI: 10.1021/acsnano.8b09516] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Beyond the synthesis of typical nanocrystals, various breakthrough approaches have been developed to provide more useful structural features and functionalities. Among them, galvanic replacement, a structural transformation reaction accompanied by constituent element substitution, has been applied to various areas. However, the innovative improvement for galvanic replacement needs to be considered because of the limitation of applicable element pairs to maintain structural stability. To expand the boundary of galvanic-replacement-mediated synthesis, we have become interested in the Group 9 metallic element Ir, which is considered a fascinating element in the field of catalysis, but whose size and shape regulation has been conventionally regarded as difficult. To overcome the current limitations, we developed a hydrothermal galvanic-replacement-tethered synthetic route to prepare Ir-Ag-IrO2 nanoplates (IrNPs) with a transverse length of tens of nanometers and a rough surface morphology. A very interesting photoreactivity was observed from the prepared IrNPs, with Ag and IrO2 coexisting partially, which showed photothermal conversion and photocatalytic activity at different ratios against extinction wavelengths of 473, 660, and 808 nm. The present IrNP platform showed excellent photothermal conversion efficiency under near-infrared laser irradiation at 808 nm and also represented an effective cancer treatment in vitro and in vivo through a synergistic effect with reactive oxygen species (ROS) generation. In addition, computed tomography (CT) imaging contrast effects from Ir and IrO2 composition were also clearly observed.
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Affiliation(s)
- Gyeonghye Yim
- Department of Chemistry , Kwangwoon University , 20, Gwangwoon-ro , Nowon-gu, Seoul 01897 , Republic of Korea
| | - Seounghun Kang
- Center for RNA Research , Institute for Basic Science (IBS) , Seoul 08826 , Republic of Korea
- Department of Chemistry , Seoul National University , Seoul 08826 , Republic of Korea
| | - Young-Jin Kim
- Carbon Composite Materials Research Center, Institute of Advanced Composite Materials , Korea Institute of Science and Technology , San 101 , Eunha-ri, Bongdong-eup, Wanju-gun , Jeollabuk-do 565-905 , Republic of Korea
| | - Young-Kwan Kim
- Carbon Composite Materials Research Center, Institute of Advanced Composite Materials , Korea Institute of Science and Technology , San 101 , Eunha-ri, Bongdong-eup, Wanju-gun , Jeollabuk-do 565-905 , Republic of Korea
| | - Dal-Hee Min
- Center for RNA Research , Institute for Basic Science (IBS) , Seoul 08826 , Republic of Korea
- Institute of Biotherapeutics Convergence Technology , Lemonex Inc. , Seoul 08826 , Republic of Korea
- Department of Chemistry , Seoul National University , Seoul 08826 , Republic of Korea
| | - Hongje Jang
- Department of Chemistry , Kwangwoon University , 20, Gwangwoon-ro , Nowon-gu, Seoul 01897 , Republic of Korea
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103
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Gruzeł G, Arabasz S, Pawlyta M, Parlinska-Wojtan M. Conversion of bimetallic PtNi 3 nanopolyhedra to ternary PtNiSn nanoframes by galvanic replacement reaction. NANOSCALE 2019; 11:5355-5364. [PMID: 30848274 DOI: 10.1039/c9nr01359h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Hollow multimetallic PtNiSn nanoparticles (NPs) were formed from solid Ni-core/Pt-frame NPs by the galvanic replacement reaction (GRR) of Ni by Sn. The GRR was performed by adding SnCl4·5H2O dissolved in ethylene glycol into the PtNi3 NPs containing suspension. The reaction yielded nanoframes with a hollow interior, having Pt-rich edges covered with a thin, incomplete Sn layer. They were investigated using transmission electron microscopy (TEM), energy dispersion X-ray spectroscopy (EDS) and X-ray diffraction (XRD). EDS analysis showed that the GRR rate could be modified by changing the solvent and the concentration of tin ions. Indeed, compared to water, ethylene glycol was found to facilitate the reduction of tin chloride and to affect nickel dissolution. TEM analysis revealed that the galvanic replacement of nickel and tin involves two different mechanisms. The first one consists of nickel oxidation followed by reduction of tin ions. In the second mechanism, oxidation of nickel and reduction of tin ions occur simultaneously.
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Affiliation(s)
- Grzegorz Gruzeł
- Institute of Nuclear Physics Polish Academy of Sciences, PL-31342 Krakow, Poland.
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104
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Decoupling structure-sensitive deactivation mechanisms of Ir/IrOx electrocatalysts toward oxygen evolution reaction. J Catal 2019. [DOI: 10.1016/j.jcat.2019.01.018] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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105
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Huang XY, You LX, Zhang XF, Feng JJ, Zhang L, Wang AJ. -proline assisted solvothermal preparation of Cu-rich rhombic dodecahedral PtCu nanoframes as advanced electrocatalysts for oxygen reduction and hydrogen evolution reactions. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.01.002] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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106
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Yoo S, Cho S, Kim D, Ih S, Lee S, Zhang L, Li H, Lee JY, Liu L, Park S. 3D PtAu nanoframe superstructure as a high-performance carbon-free electrocatalyst. NANOSCALE 2019; 11:2840-2847. [PMID: 30676593 DOI: 10.1039/c8nr08231f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this work, we demonstrate how to synthesize a three-dimensional (3D) ordered PtAu nanoframe superstructure and evaluated its performance as an electrocatalyst. Compared to carbon supported platinum (Pt) nanocrystal electrocatalysts (wherein the aggregation- and carbon corrosion-induced fast degradation is a well-known drawback), the 3D PtAu nanoframe superstructure is free from aggregation and carbon corrosion. The 3D superstructure was self-assembled via drop-casting and evaporation using truncated octahedral PtAu nanoframes (TOh PtAu NFs) as building blocks that were produced by controlled wet-chemical etching of a TOh Au core whose edges and vertexes were selectively deposited with Pt atoms. Density functional theory calculations revealed that the surface alloy state of PtAu gave rise to an enhanced catalytic activity compared to pure Pt. Experimental investigations showed that such 3D superstructure electrocatalysts exhibited excellent mass transfer efficiency, higher catalytic activity and stability towards the methanol oxidation reaction (MOR) compared to a commercial Pt/C catalyst. The demonstrated 3D nanoframe superstructure shows great potential for practical catalytic application due to its high structural stability, high catalytic activity, high surface area and ease of fabrication.
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Affiliation(s)
- Sungjae Yoo
- Department of Chemistry, Sungkyunkwan University, Suwon 440-746, South Korea.
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107
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Oh A, Kim HY, Baik H, Kim B, Chaudhari NK, Joo SH, Lee K. Topotactic Transformations in an Icosahedral Nanocrystal to Form Efficient Water-Splitting Catalysts. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1805546. [PMID: 30362625 DOI: 10.1002/adma.201805546] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Revised: 09/26/2018] [Indexed: 06/08/2023]
Abstract
Designing high-performance, precious-metal-based, and economic electrocatalysts remains an important challenge in proton exchange membrane (PEM) electrolyzers. Here, a highly active and durable bifunctional electrocatalyst for PEM electrolyzers based on a rattle-like catalyst comprising a Ni/Ru-doped Pt core and a Pt/Ni-doped RuO2 frame shell, which is topotactically transformed from an icosahedral Pt/Ni/Ru nanocrystal, is reported. The RuO2 -based frame shell with its highly reactive surfaces leads to a very high activity for the oxygen evolution reaction (OER) in acidic media, reaching a current density of 10 mA cm-2 at an overpotential of 239 mV, which surpasses those of previously reported catalysts. The Pt dopant in the RuO2 shell enables a sustained OER activity even after a 2000 cycles of an accelerated durability test. The Pt-based core catalyzes the hydrogen evolution reaction with an excellent mass activity. A two-electrode cell employing Pt/RuO2 as the electrode catalyst demonstrates very high activity and durability, outperforming the previously reported cell performances.
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Affiliation(s)
- Aram Oh
- Department of Chemistry, Korea University, Seoul, 02841, Republic of Korea
- Korea Basic Science Institute (KBSI), Seoul, 02841, Republic of Korea
| | - Ho Young Kim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Hionsuck Baik
- Korea Basic Science Institute (KBSI), Seoul, 02841, Republic of Korea
| | - Byeongyoon Kim
- Department of Chemistry, Korea University, Seoul, 02841, Republic of Korea
| | | | - Sang Hoon Joo
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Kwangyeol Lee
- Department of Chemistry, Korea University, Seoul, 02841, Republic of Korea
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108
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Shi Q, Zhu C, Du D, Lin Y. Robust noble metal-based electrocatalysts for oxygen evolution reaction. Chem Soc Rev 2019; 48:3181-3192. [PMID: 31112142 DOI: 10.1039/c8cs00671g] [Citation(s) in RCA: 298] [Impact Index Per Article: 59.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The oxygen evolution reaction (OER) is a kinetically sluggish anodic reaction and requires a large overpotential to deliver appreciable current. Despite the fact that non-precious metal-based alkaline water electrocatalysts are receiving increased attention, noble metal-based electrocatalysts (NMEs) applied in proton exchange membrane water electrolyzers still have advantageous features of larger current and power densities with lower stack cost. Engineering NMEs for OER catalysis with high efficiency, durability and utilization rate is of vital importance in promoting the development of cost-effective renewable energy production and conversion devices. In this tutorial review, we covered the recent progress in the composition and structure optimization of NMEs for OER including Ir- and Ru-based oxides and alloys, and noble-metals beyond Ir and Ru with a variety of morphologies. To shed light on the fundamental science and mechanisms behind composition/structure-performance relationships and activity-stability relationships, integrated experimental and theoretical studies were pursued for illuminating the metal-support interaction, size effect, heteroatom doping effect, phase transformation, degradation processes and single-atom catalysis. Finally, the challenges and outlook are provided for guiding the rational engineering of OER electrocatalysts for applications in renewable energy-related devices.
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Affiliation(s)
- Qiurong Shi
- School of Mechanical and Materials Engineering, Washington State University, Pullman, WA-99164, USA.
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109
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Tong Y, Mao H, Xu Y, Liu J. Oxygen vacancies confined in Co3O4 quantum dots for promoting oxygen evolution electrocatalysis. Inorg Chem Front 2019. [DOI: 10.1039/c9qi00325h] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Abundant oxygen vacancies confined in Co3O4 quantum dots provide more efficient Co(ii), more active sites and improved conductivity for superior OER performance.
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Affiliation(s)
- Yun Tong
- Department of Chemistry
- School of Sciences
- Zhejiang Sci-Tech University
- Hangzhou
- China
| | - Hainiao Mao
- Department of Chemistry
- School of Sciences
- Zhejiang Sci-Tech University
- Hangzhou
- China
| | - Yanglei Xu
- Department of Chemistry
- School of Sciences
- Zhejiang Sci-Tech University
- Hangzhou
- China
| | - Jiyang Liu
- Department of Chemistry
- School of Sciences
- Zhejiang Sci-Tech University
- Hangzhou
- China
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110
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Park J, Kim HJ, Oh A, Kwon T, Baik H, Choi SI, Lee K. RuO x-decorated multimetallic hetero-nanocages as highly efficient electrocatalysts toward the methanol oxidation reaction. NANOSCALE 2018; 10:21178-21185. [PMID: 30417184 DOI: 10.1039/c8nr06168h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Direct methanol fuel cell technology awaits the development of highly efficient and robust nanocatalysts driving the methanol oxidation reaction (MOR) in a CO poisoning-free fashion. Thus far, various Pt-based alloy nanoparticles have been studied as electrocatalysts toward the MOR, and it has been found that the introduction of dopants such as Ru and Cu to Pt has been particularly successful in mitigating the CO poisoning problem. Herein, we report a facile synthesis of Ru-branched RuPtCu nanocages that involves in situ formation of Ru-doped PtCu nanoparticles and subsequent outgrowth of Ru branches by insertion of additional Ru precursors. We show that the electrocatalytic activity and stability of Ru branched RuPtCu ternary nanocages toward the MOR are greatly improved compared to those of PtCu/C and RuPtCu/C counterparts and state-of-the-art PtRu/C and Pt/C catalysts, mainly due to the synergy between the CO-tolerant RuOx phase and the highly open and robust RuPtCu nanoframe.
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Affiliation(s)
- Jongsik Park
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea.
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111
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Yao S, Forstner V, Menezes PW, Panda C, Mebs S, Zolnhofer EM, Miehlich ME, Szilvási T, Ashok Kumar N, Haumann M, Meyer K, Grützmacher H, Driess M. From an Fe 2P 3 complex to FeP nanoparticles as efficient electrocatalysts for water-splitting. Chem Sci 2018; 9:8590-8597. [PMID: 30568784 PMCID: PMC6253717 DOI: 10.1039/c8sc03407a] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 09/15/2018] [Indexed: 12/17/2022] Open
Abstract
In large-scale, hydrogen production from water-splitting represents the most promising solution for a clean, recyclable, and low-cost energy source. The realization of viable technological solutions requires suitable efficient electrochemical catalysts with low overpotentials and long-term stability for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) based on cheap and nontoxic materials. Herein, we present a unique molecular approach to monodispersed, ultra-small, and superiorly active iron phosphide (FeP) electrocatalysts for bifunctional OER, HER, and overall water-splitting. They result from transformation of a molecular iron phosphide precursor, containing a [Fe2P3] core with mixed-valence FeIIFeIII sites bridged by an asymmetric cyclo-P(2+1) 3- ligand. The as-synthesized FeP nanoparticles act as long-lasting electrocatalysts for OER and HER with low overpotential and high current densities that render them one of the best-performing electrocatalysts hitherto known. The fabricated alkaline electrolyzer delivered low cell voltage with durability over weeks, representing an attractive catalyst for large-scale water-splitting technologies.
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Affiliation(s)
- Shenglai Yao
- Department of Chemistry: Metalorganics and Inorganic Materials , Technische Universität Berlin , Strasse des 17. Juni 135, Sekr. C2 , D-10623 Berlin , Germany .
| | - Viktoria Forstner
- Department of Chemistry: Metalorganics and Inorganic Materials , Technische Universität Berlin , Strasse des 17. Juni 135, Sekr. C2 , D-10623 Berlin , Germany .
| | - Prashanth W Menezes
- Department of Chemistry: Metalorganics and Inorganic Materials , Technische Universität Berlin , Strasse des 17. Juni 135, Sekr. C2 , D-10623 Berlin , Germany .
| | - Chakadola Panda
- Department of Chemistry: Metalorganics and Inorganic Materials , Technische Universität Berlin , Strasse des 17. Juni 135, Sekr. C2 , D-10623 Berlin , Germany .
| | - Stefan Mebs
- Department of Physics , Freie Universität Berlin , Arnimallee 14 , D-14195 Berlin , Germany
| | - Eva M Zolnhofer
- Department of Chemistry and Pharmacy , Friedrich-Alexander-University Erlangen-Nürnberg (FAU) , Egerlandstrasse 1 , 91058 Erlangen , Germany .
| | - Matthias E Miehlich
- Department of Chemistry and Pharmacy , Friedrich-Alexander-University Erlangen-Nürnberg (FAU) , Egerlandstrasse 1 , 91058 Erlangen , Germany .
| | - Tibor Szilvási
- Department of Chemical & Biological Engineering , University of Wisconsin-Madison , 1415 Engineering Drive , 53706 , Madison , WI , USA
| | - Nanjundan Ashok Kumar
- School of Chemical Engineering , The University of Queensland , St Lucia , Brisbane , 4072 , Australia
| | - Michael Haumann
- Department of Physics , Freie Universität Berlin , Arnimallee 14 , D-14195 Berlin , Germany
| | - Karsten Meyer
- Department of Chemistry and Pharmacy , Friedrich-Alexander-University Erlangen-Nürnberg (FAU) , Egerlandstrasse 1 , 91058 Erlangen , Germany .
| | - Hansjörg Grützmacher
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog Weg 1, Hönggerberg , CH-8093 , Zürich , Switzerland .
| | - Matthias Driess
- Department of Chemistry: Metalorganics and Inorganic Materials , Technische Universität Berlin , Strasse des 17. Juni 135, Sekr. C2 , D-10623 Berlin , Germany .
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112
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Park J, Kwon T, Kim J, Jin H, Kim HY, Kim B, Joo SH, Lee K. Hollow nanoparticles as emerging electrocatalysts for renewable energy conversion reactions. Chem Soc Rev 2018; 47:8173-8202. [PMID: 30009297 DOI: 10.1039/c8cs00336j] [Citation(s) in RCA: 110] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
While the realization of clean and sustainable energy conversion systems primarily requires the development of highly efficient catalysts, one of the main issues had been designing the structure of the catalysts to fulfill minimum cost as well as maximum performance. Until now, noble metal-based nanocatalysts had shown outstanding performances toward the oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER). However, the scarcity and high cost of them impeded their practical use. Recently, hollow nanostructures including nanocages and nanoframes had emerged as a burgeoning class of promising electrocatalysts. The hollow nanostructures could expose a high proportion of active surfaces while saving the amounts of expensive noble metals. In this review, we introduced recent advances in the synthetic methodologies for generating noble metal-based hollow nanostructures based on thermodynamic and kinetic approaches. We summarized electrocatalytic applications of hollow nanostructures toward the ORR, OER, and HER. We next provided strategies that could endow structural robustness to the flimsy structural nature of hollow structures. Finally, we concluded this review with perspectives to facilitate the development of hollow nanostructure-based catalysts for energy applications.
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Affiliation(s)
- Jongsik Park
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea.
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113
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Li G, Li K, Yang L, Chang J, Ma R, Wu Z, Ge J, Liu C, Xing W. Boosted Performance of Ir Species by Employing TiN as the Support toward Oxygen Evolution Reaction. ACS APPLIED MATERIALS & INTERFACES 2018; 10:38117-38124. [PMID: 30335932 DOI: 10.1021/acsami.8b14172] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Reducing the noble-metal loading without sacrificing the catalytic performance of the oxygen evolution reaction (OER) catalysts is paramount yet highly challenging. Herein, IrO2@Ir/TiN electrocatalysts employing TiN as the support have been developed and shown high efficiency toward OER. TiN is found not only to disperse the IrO2@Ir nanoparticles effectively but also to exert the electronic modulation of Ir by downshifting its d-band center of 0.21 eV compared to pure IrO2. Excitingly, TiN remarkably enhances the catalytic performance of Ir, where the overpotential to achieve the current density of 10 mA cm-2 is only 265 mV for the IrO2@Ir/TiN (60 wt %) catalyst. As a result, 71.7 wt % of the Ir metal can be saved to compare with the commercial Ir-black counterpart. Moreover, TiN can inhibit the aggregation and oxidative dissolution of Ir species, thereby enhancing the operational stability. The combined advantages of TiN open a new solution to reduce the anodic catalyst cost through boosting the catalytic activity and stability.
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Affiliation(s)
- Guoqiang Li
- University of Chinese Academy of Sciences , Beijing 100039 , China
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114
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Wang K, Du H, Sriphathoorat R, Shen PK. Vertex-Type Engineering of Pt-Cu-Rh Heterogeneous Nanocages for Highly Efficient Ethanol Electrooxidation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1804074. [PMID: 30252952 DOI: 10.1002/adma.201804074] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 09/04/2018] [Indexed: 06/08/2023]
Abstract
Mastery over the architecture and elemental distribution of metal nanocrystals at the nanoscale can effectively tailor and improve their catalytic properties. Herein, the vertex-type-selective growth of metallic nanohorns on a central nanocrystal is constructed via a one-pot solvothermal synthesis, despite the fact that the site-selective epitaxy of the second phase proceeds on all the vertices of the seeds. The prepared vertex-type-selective Pt-Cu-Rh heterogeneous nanocages (HNCs) are composed of a Rh-decorated Pt-Cu rhombic dodecahedral nanocage and six Pt-Cu-Rh nanohorns protruding from the {100} rather than the {111} vertices of rhombic dodecahedron. Impressively, the Pt-Cu-Rh HNCs exhibit 8.1 times higher specific and 6.8 times higher mass activity toward the ethanol oxidation reaction under acidic conditions than commercial Pt/C catalysts. Besides, the peak potential for CO oxidation on Pt-Cu-Rh HNCs (370.4 mV vs SCE) is 182.0 mV more negative than that on Pt/C, indicating the dramatically enhanced CO tolerance. The excellent electrocatalytic property is attributed to the synergistic effect between Pt, Cu, and Rh components, high specific surface area of nanocages and nanohorns, as well as abundant concave/convex sites and various high-index facets around the surface.
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Affiliation(s)
- Kai Wang
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, P. R. China
- Collaborative Innovation Center of Sustainable Energy Materials, Guangxi University, Nanning, 530004, P. R. China
| | - Hongyu Du
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Rinrada Sriphathoorat
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Pei Kang Shen
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, P. R. China
- Collaborative Innovation Center of Sustainable Energy Materials, Guangxi University, Nanning, 530004, P. R. China
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115
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Hu C, Liu J, Wang J, She W, Xiao J, Xi J, Bai Z, Wang S. Coordination-Assisted Polymerization of Mesoporous Cobalt Sulfide/Heteroatom (N,S)-Doped Double-Layered Carbon Tubes as an Efficient Bifunctional Oxygen Electrocatalyst. ACS APPLIED MATERIALS & INTERFACES 2018; 10:33124-33134. [PMID: 30199229 DOI: 10.1021/acsami.8b07343] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
It is a critical challenge to construct efficient precious-metal-free bifunctional oxygen electrocatalysts for fuel cell and metal-air batteries via structural and component engineering. Herein, a one-dimensional mesoporous double-layered tubular structure, where Co9S8 nanocrystals are incorporated into nitrogen, sulfur codoped carbon, is successfully synthesized via the coordinated-assisted polymerization and sacrificial template methods. The double-layered tubular structure provides for a large electrochemically active surface area and promotes fast mass transfer. Cobalt oxides/oxyhydroxides, which are evolved from the sulfides during the catalytic processes, as the main active sites efficiently catalyze the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), in cooperation with the Co-N-C and heteroatom-induced active sites. Hence, it demonstrates excellent bifunctional electrocatalytic activity with the overvoltage between the OER potential at 10 mA cm-2 ( E10) and ORR half-wave potential ( E1/2) of 0.707 V, which is superior to most of precious-metal-free bifunctional oxygen electrocatalysts reported recently, as well as the state-of-art Pt/C and RuO2 catalysts.
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Affiliation(s)
- Chencheng Hu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Department of Chemistry and Chemical Engineering , Huazhong University of Science & Technology , Wuhan 430074 , PR China
| | - Jin Liu
- School of Chemistry and Environmental Engineering , Wuhan Institute of Technology , Wuhan 430205 , PR China
| | - Juan Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Department of Chemistry and Chemical Engineering , Huazhong University of Science & Technology , Wuhan 430074 , PR China
| | - Wanxin She
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Department of Chemistry and Chemical Engineering , Huazhong University of Science & Technology , Wuhan 430074 , PR China
| | - Junwu Xiao
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Department of Chemistry and Chemical Engineering , Huazhong University of Science & Technology , Wuhan 430074 , PR China
| | - Jiangbo Xi
- School of Chemistry and Environmental Engineering , Wuhan Institute of Technology , Wuhan 430205 , PR China
| | - Zhengwu Bai
- School of Chemistry and Environmental Engineering , Wuhan Institute of Technology , Wuhan 430205 , PR China
| | - Shuai Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Department of Chemistry and Chemical Engineering , Huazhong University of Science & Technology , Wuhan 430074 , PR China
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116
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Chung DY, Yoo JM, Sung YE. Highly Durable and Active Pt-Based Nanoscale Design for Fuel-Cell Oxygen-Reduction Electrocatalysts. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1704123. [PMID: 29359829 DOI: 10.1002/adma.201704123] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Revised: 10/04/2017] [Indexed: 05/16/2023]
Abstract
Fuel cells are one of the promising energy-conversion devices due to their high efficiency and zero emission. Although recent advances in electrocatalysts have been achieved using various material designs such as alloys, core@shell structures, and shape control, many issues still remain to be resolved. Especially, material design issues for high durability and high activity are recently accentuated owing to severe instability of nanoparticles under fuel-cell operating conditions. To address these issues, fundamental understanding of functional links between activity and durability is timely urgent. Here, the activity and durability of nanoscale materials are summarized, focusing on the nanoparticle size effect. In addition to phenomenological observation, two major degradation origins, including atomic dissolution and particle size increase, are discussed related to the activity decrease. Based on the fundamental understanding of nanoparticle degradation, recent promising strategies for durable Pt-based nanoscale electrocatalysts are introduced and the role of each design for durability enhancement is discussed. Finally, short comments related to the future direction of nanoparticle issues are provided in terms of nanoparticle synthesis and analysis.
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Affiliation(s)
- Dong Young Chung
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, South Korea
- School of Chemical and Biological Engineering, Seoul National University (SNU), Seoul, 08826, South Korea
| | - Ji Mun Yoo
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, South Korea
- School of Chemical and Biological Engineering, Seoul National University (SNU), Seoul, 08826, South Korea
| | - Yung-Eun Sung
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, South Korea
- School of Chemical and Biological Engineering, Seoul National University (SNU), Seoul, 08826, South Korea
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117
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Lv F, Feng J, Wang K, Dou Z, Zhang W, Zhou J, Yang C, Luo M, Yang Y, Li Y, Gao P, Guo S. Iridium-Tungsten Alloy Nanodendrites as pH-Universal Water-Splitting Electrocatalysts. ACS CENTRAL SCIENCE 2018; 4:1244-1252. [PMID: 30276259 PMCID: PMC6161040 DOI: 10.1021/acscentsci.8b00426] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Indexed: 05/24/2023]
Abstract
The development of highly efficient and durable electrocatalysts for high-performance overall water-splitting devices is crucial for clean energy conversion. However, the existing electrocatalysts still suffer from low catalytic efficiency, and need a large overpotential to drive the overall water-splitting reactions. Herein, we report an iridium-tungsten alloy with nanodendritic structure (IrW ND) as a new class of high-performance and pH-universal bifunctional electrocatalysts for hydrogen and oxygen evolution catalysis. The IrW ND catalyst presents a hydrogen generation rate ∼2 times higher than that of the commercial Pt/C catalyst in both acid and alkaline media, which is among the most active hydrogen evolution reaction (HER) catalysts yet reported. The density functional theory (DFT) calculations reveal that the high HER intrinsic catalytic activity results from the suitable hydrogen and hydroxyl binding energies, which can accelerate the rate-determining step of the HER in acid and alkaline media. Moreover, the IrW NDs show superb oxygen evolution reaction (OER) activity and much improved stability over Ir. The theoretical calculation demonstrates that alloying Ir metal with W can stabilize the formed active iridium oxide during the OER process and lower the binding energy of reaction intermediates, thus improving the Ir corrosion resistance and OER kinetics. Furthermore, the overall water-splitting devices driven by IrW NDs can work in a wide pH range and achieve a current density of 10 mA cm-2 in acid electrolyte at a low potential of 1.48 V.
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Affiliation(s)
- Fan Lv
- Department
of Material Science and Engineering, College of Engineering, Peking University, Beijing 100871, P. R. China
| | - Jianrui Feng
- Department
of Material Science and Engineering, College of Engineering, Peking University, Beijing 100871, P. R. China
| | - Kai Wang
- Department
of Material Science and Engineering, College of Engineering, Peking University, Beijing 100871, P. R. China
| | - Zhipeng Dou
- Electron
Microscopy Laboratory, and International Center for Quantum Materials,
School of Physics, Peking University, Beijing 100871, P. R. China
| | - Weiyu Zhang
- Department
of Material Science and Engineering, College of Engineering, Peking University, Beijing 100871, P. R. China
| | - Jinhui Zhou
- Department
of Material Science and Engineering, College of Engineering, Peking University, Beijing 100871, P. R. China
| | - Chao Yang
- Department
of Material Science and Engineering, College of Engineering, Peking University, Beijing 100871, P. R. China
| | - Mingchuan Luo
- Department
of Material Science and Engineering, College of Engineering, Peking University, Beijing 100871, P. R. China
| | - Yong Yang
- Department
of Material Science and Engineering, College of Engineering, Peking University, Beijing 100871, P. R. China
| | - Yingjie Li
- Department
of Material Science and Engineering, College of Engineering, Peking University, Beijing 100871, P. R. China
| | - Peng Gao
- Electron
Microscopy Laboratory, and International Center for Quantum Materials,
School of Physics, Peking University, Beijing 100871, P. R. China
| | - Shaojun Guo
- Department
of Material Science and Engineering, College of Engineering, Peking University, Beijing 100871, P. R. China
- BIC-ESAT,
College of Engineering, Peking University, Beijing 100871, P. R. China
- Department
of Energy and Resources Engineering, College of Engineering, Peking University, Beijing 100871, P. R. China
- Beijing
Key Laboratory for Magnetoeletric Materials and Devices (BKL-MEMD), Peking University, Beijing 100871, P. R. China
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118
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Synthesis of phosphorus-iridium nanocrystals and their superior electrocatalytic activity for oxygen evolution reaction. Electrochem commun 2018. [DOI: 10.1016/j.elecom.2018.08.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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119
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Jiang B, Guo Y, Kim J, Whitten AE, Wood K, Kani K, Rowan AE, Henzie J, Yamauchi Y. Mesoporous Metallic Iridium Nanosheets. J Am Chem Soc 2018; 140:12434-12441. [PMID: 30129750 DOI: 10.1021/jacs.8b05206] [Citation(s) in RCA: 171] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Two-dimensional (2D) metals are an emerging class of nanostructures that have attracted enormous research interest due to their unusual electronic and thermal transport properties. Adding mesopores in the plane of ultrathin 2D metals is the next big step in manipulating these structures because increasing their surface area improves the utilization of the material and the availability of active sites. Here, we report a novel synthetic strategy to prepare an unprecedented type of 2D mesoporous metallic iridium (Ir) nanosheet. Mesoporous Ir nanosheets can be synthesized with close-packed assemblies of diblock copolymer (poly-(ethylene oxide)- b-polystyrene, PEO- b-PS) micelles aligned in the 2D plane of the nanosheets. This novel synthetic route opens a new dimension of control in the synthesis of 2D metals, enabling new kinds of mesoporous architectures with abundant catalytically active sites. Because of their unique structural features, the mesoporous metallic Ir nanosheets exhibit a high electrocatalytic activity toward the oxygen evolution reaction (OER) in acidic solution as compared to commercially available catalysts.
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Affiliation(s)
- Bo Jiang
- International Center for Materials Nanoarchitectonics (WPI-MANA) , National Institute for Materials Science (NIMS) , 1-1 Namiki , Tsukuba , Ibaraki 305-0044 , Japan
| | - Yanna Guo
- International Center for Materials Nanoarchitectonics (WPI-MANA) , National Institute for Materials Science (NIMS) , 1-1 Namiki , Tsukuba , Ibaraki 305-0044 , Japan
| | - Jeonghun Kim
- College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , China.,School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN) , The University of Queensland , Brisbane , Queensland 4072 , Australia
| | - Andrew E Whitten
- Australian Nuclear Science and Technology Organisation (ANSTO) , New Illawarra Road , Lucas Heights , New South Wales 2234 , Australia
| | - Kathleen Wood
- Australian Nuclear Science and Technology Organisation (ANSTO) , New Illawarra Road , Lucas Heights , New South Wales 2234 , Australia
| | - Kenya Kani
- School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN) , The University of Queensland , Brisbane , Queensland 4072 , Australia
| | - Alan E Rowan
- School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN) , The University of Queensland , Brisbane , Queensland 4072 , Australia
| | - Joel Henzie
- International Center for Materials Nanoarchitectonics (WPI-MANA) , National Institute for Materials Science (NIMS) , 1-1 Namiki , Tsukuba , Ibaraki 305-0044 , Japan
| | - Yusuke Yamauchi
- College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , China.,School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN) , The University of Queensland , Brisbane , Queensland 4072 , Australia.,School of Chemical Department of Plant and Environmental New Resources , Kyung Hee University , 1732 Deogyeong-daero, Giheung-gu , Yongin-si , Gyeonggi-do 446-701 , South Korea
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120
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Fu L, Zeng X, Cheng G, Luo W. IrCo Nanodendrite as an Efficient Bifunctional Electrocatalyst for Overall Water Splitting under Acidic Conditions. ACS APPLIED MATERIALS & INTERFACES 2018; 10:24993-24998. [PMID: 30016069 DOI: 10.1021/acsami.8b08717] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Investigation of high-efficiency electrocatalysts for acidic overall water splitting is of great significance toward fulfillment of proton exchange membrane (PEM) electrolyzers but still remains challenging. Herein, we report the colloidally synthesis of IrCo alloy nanodendrites with petal-like architecture (NDs). Benefiting from unique hierarchical architecture and strong electronic interaction arising from synergistic alloying effect of IrCo at the atomic level, the resultant IrCo0.65 NDs display remarkable hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) performances with overpotentials of 17 and 281 mV to achieve 10 mA cm-2 in 0.1 M HClO4, respectively. Moreover, when further used as bifunctional electrocatalyst toward acidic overall splitting, a low cell voltage of 1.593 V is achieved at 10 mA cm-2.
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Affiliation(s)
- Luhong Fu
- College of Chemistry and Molecular Sciences , Wuhan University , Wuhan , Hubei 430072 , P. R. China
| | - Xiang Zeng
- College of Chemistry and Molecular Sciences , Wuhan University , Wuhan , Hubei 430072 , P. R. China
| | - Gongzhen Cheng
- College of Chemistry and Molecular Sciences , Wuhan University , Wuhan , Hubei 430072 , P. R. China
| | - Wei Luo
- College of Chemistry and Molecular Sciences , Wuhan University , Wuhan , Hubei 430072 , P. R. China
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121
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Liu Y, Liang X, Gu L, Zhang Y, Li GD, Zou X, Chen JS. Corrosion engineering towards efficient oxygen evolution electrodes with stable catalytic activity for over 6000 hours. Nat Commun 2018; 9:2609. [PMID: 29973591 PMCID: PMC6031686 DOI: 10.1038/s41467-018-05019-5] [Citation(s) in RCA: 147] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Accepted: 06/11/2018] [Indexed: 11/09/2022] Open
Abstract
Although a number of nonprecious materials can exhibit catalytic activity approaching (sometimes even outperforming) that of iridium oxide catalysts for the oxygen evolution reaction, their catalytic lifetimes rarely exceed more than several hundred hours under operating conditions. Here we develop an energy-efficient, cost-effective, scaled-up corrosion engineering method for transforming inexpensive iron substrates (e.g., iron plate and iron foam) into highly active and ultrastable electrodes for oxygen evolution reaction. This synthetic method is achieved via a desired corrosion reaction of iron substrates with oxygen in aqueous solutions containing divalent cations (e.g., nickel) at ambient temperature. This process results in the growth on iron substrates of thin film nanosheet arrays that consist of iron-containing layered double hydroxides, instead of rust. This inexpensive and simple manufacturing technique affords iron-substrate-derived electrodes possessing excellent catalytic activities and activity retention for over 6000 hours at 1000 mA cm-2 current densities.
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Affiliation(s)
- Yipu Liu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 130012, Changchun, China
| | - Xiao Liang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 130012, Changchun, China
| | - Lin Gu
- Institute of Physics, Chinese Academy of Sciences, 100190, Beijing, China
| | - Yu Zhang
- School of Chemistry, Beihang University, 100191, Beijing, China
| | - Guo-Dong Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 130012, Changchun, China
| | - Xiaoxin Zou
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 130012, Changchun, China.
| | - Jie-Sheng Chen
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 200240, Shanghai, China
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122
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Su J, Ge R, Jiang K, Dong Y, Hao F, Tian Z, Chen G, Chen L. Assembling Ultrasmall Copper-Doped Ruthenium Oxide Nanocrystals into Hollow Porous Polyhedra: Highly Robust Electrocatalysts for Oxygen Evolution in Acidic Media. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1801351. [PMID: 29870585 DOI: 10.1002/adma.201801351] [Citation(s) in RCA: 151] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 03/29/2018] [Indexed: 05/20/2023]
Abstract
Here, a facile and novel strategy for the preparation of Cu-doped RuO2 hollow porous polyhedra composed of ultrasmall nanocrystals through one-step annealing of a Ru-exchanged Cu-BTC derivative is reported. Owing to the optimized surface configuration and altered electronic structure, the prepared catalyst displays a remarkable oxygen evolution reaction (OER) performance with low overpotential of 188 mV at 10 mA cm-2 in acidic electrolyte, an ultralow Tafel slope of 43.96 mV dec-1 , and excellent stability in durability testing for 10 000 cycles, and continuous testing of 8 h at a current density of 10 mA cm-2 . Density functional theory calculations reveal that the highly unsaturated Ru sites on the high-index facets can be oxidized gradually and reduce the energy barrier of rate-determining steps. On the other hand, the Cu dopants can alter the electronic structures so as to further improve the intrinsic OER activity.
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Affiliation(s)
- Jianwei Su
- Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, P. R. China
| | - Ruixiang Ge
- Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, P. R. China
| | - Kemin Jiang
- Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, P. R. China
| | - Yan Dong
- Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, P. R. China
| | - Fei Hao
- Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, P. R. China
| | - Ziqi Tian
- Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, P. R. China
| | - Guoxin Chen
- Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, P. R. China
| | - Liang Chen
- Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, P. R. China
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123
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Kim T, Park J, Jin H, Oh A, Baik H, Joo SH, Lee K. A facet-controlled Rh 3Pb 2S 2 nanocage as an efficient and robust electrocatalyst toward the hydrogen evolution reaction. NANOSCALE 2018; 10:9845-9850. [PMID: 29786733 DOI: 10.1039/c8nr02091d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Highly active and durable electrocatalysts for the hydrogen evolution reaction (HER) may play a pivotal role in commercial success of electrolytic water splitting technology. Among various material classes, binary metal sulphides show a great promise as HER catalysts because of their tunable energy levels conducive to a high catalytic activity and high robustness under harsh operating conditions. On the other hand, facet-controlled nanoparticles with controlled surface energies have gained great recent popularity as active and selective catalysts. However, binary metal sulphide nanoparticles with well-defined facets and high surface areas are very rare. Herein we report the synthesis of a facet-controlled hollow Rh3Pb2S2 nanocage as a new catalytic material and its excellent activity (overpotential: 87.3 mV at 10 mA cm-2) and robustness toward HER under harsh acidic conditions.
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Affiliation(s)
- Taekyung Kim
- Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science (IBS), Seoul 02841, Republic of Korea.
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124
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Fang C, Luo J, Jin C, Yuan H, Sheng O, Huang H, Gan Y, Xia Y, Liang C, Zhang J, Zhang W, Tao X. Enhancing Catalyzed Decomposition of Na 2CO 3 with Co 2MnO x Nanowire-Decorated Carbon Fibers for Advanced Na-CO 2 Batteries. ACS APPLIED MATERIALS & INTERFACES 2018; 10:17240-17248. [PMID: 29701452 DOI: 10.1021/acsami.8b04034] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The metal-CO2 batteries, especially Na-CO2, batteries come into sight owing to their high energy density, ability for CO2 capture, and the abundance of sodium resource. Besides the sluggish electrochemical reactions at the gas cathodes and the instability of the electrolyte at a high voltage, the final discharge product Na2CO3 is a solid and poor conductor of electricity, which may cause the high overpotential and poor cycle performance for the Na-CO2 batteries. The promotion of decomposition of Na2CO3 should be an efficient strategy to enhance the electrochemical performance. Here, we design a facile Na2CO3 activation experiment to screen the efficient cathode catalyst for the Na-CO2 batteries. It is found that the Co2MnO x nanowire-decorated carbon fibers (CMO@CF) can promote the Na2CO3 decomposition at the lowest voltage among all these metal oxide-decorated carbon fiber structures. After assembling the Na-CO2 batteries, the electrodes based on CMO@CF show lower overpotential and better cycling performance compared with the electrodes based on pristine carbon fibers and other metal oxide-modified carbon fibers. We believe this catalyst screening method and the freestanding structure of the CMO@CF electrode may provide an important reference for the development of advanced Na-CO2 batteries.
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Affiliation(s)
- Cong Fang
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , PR China
| | - Jianmin Luo
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , PR China
| | - Chengbin Jin
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , PR China
| | - Huadong Yuan
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , PR China
| | - Ouwei Sheng
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , PR China
| | - Hui Huang
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , PR China
| | - Yongping Gan
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , PR China
| | - Yang Xia
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , PR China
| | - Chu Liang
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , PR China
| | - Jun Zhang
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , PR China
| | - Wenkui Zhang
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , PR China
| | - Xinyong Tao
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , PR China
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125
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Kwon H, Kabiraz MK, Park J, Oh A, Baik H, Choi SI, Lee K. Dendrite-Embedded Platinum-Nickel Multiframes as Highly Active and Durable Electrocatalyst toward the Oxygen Reduction Reaction. NANO LETTERS 2018; 18:2930-2936. [PMID: 29634282 DOI: 10.1021/acs.nanolett.8b00270] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Pt-based nanoframe catalysts have been explored extensively due to their superior activity toward the oxygen reduction reaction (ORR). Herein, we report the synthesis of Pt-Ni multiframes, which exhibit the unique structure of tightly fused multiple nanoframes and reinforced by an embedded dendrite. Rapid reduction and deposition of Ni atoms on Pt-Ni nanodendrites induce the alloying/dealloying of Pt and Ni in the overall nanostructures. After chemical etching of Ni, the newly formed dendrite-embedded Pt-Ni multiframes show an electrochemically active surface area (ECSA) of 73.4 m2 gPt-1 and a mass ORR activity of 1.51 A mgPt-1 at 0.93 V, which is 30-fold higher than that of the state-of-the-art Pt/C catalyst. We suggest that high ECSA and ORR performances of dendrite-embedded Pt-Ni multiframes/C can be attributed to the porous nanostructure and numerous active sites exposed on surface grain boundaries and high-indexed facets.
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Affiliation(s)
- Hyukbu Kwon
- Department of Chemistry , Korea University , Seoul 02841 , Korea
| | - Mrinal Kanti Kabiraz
- Department of Chemistry and Green-Nano Materials Research Center , Kyungpook National University , Daegu 41566 , Korea
| | - Jongsik Park
- Department of Chemistry , Korea University , Seoul 02841 , Korea
| | - Aram Oh
- Department of Chemistry , Korea University , Seoul 02841 , Korea
- Korea Basic Science Institute (KBSI) , Seoul 02841 , Korea
| | - Hionsuck Baik
- Korea Basic Science Institute (KBSI) , Seoul 02841 , Korea
| | - Sang-Il Choi
- Department of Chemistry and Green-Nano Materials Research Center , Kyungpook National University , Daegu 41566 , Korea
| | - Kwangyeol Lee
- Department of Chemistry , Korea University , Seoul 02841 , Korea
- Center for Molecular Spectroscopy and Dynamics , Institute for Basic Science (IBS) , Seoul 02841 , Korea
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126
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Mondschein JS, Kumar K, Holder CF, Seth K, Kim H, Schaak RE. Intermetallic Ni2Ta Electrocatalyst for the Oxygen Evolution Reaction in Highly Acidic Electrolytes. Inorg Chem 2018; 57:6010-6015. [DOI: 10.1021/acs.inorgchem.8b00503] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Jared S. Mondschein
- Department of Chemistry and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Kuldeep Kumar
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Cameron F. Holder
- Department of Chemistry and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Kriti Seth
- Department of Chemistry and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Hojong Kim
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Raymond E. Schaak
- Department of Chemistry and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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127
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Kim B, Oh A, Kabiraz MK, Hong Y, Joo J, Baik H, Choi SI, Lee K. NiOOH Exfoliation-Free Nickel Octahedra as Highly Active and Durable Electrocatalysts Toward the Oxygen Evolution Reaction in an Alkaline Electrolyte. ACS APPLIED MATERIALS & INTERFACES 2018. [PMID: 29513002 DOI: 10.1021/acsami.7b19457] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
A layered β-NiOOH crystal with undercoordinated facets is an active and economically viable nonnoble catalyst for the oxygen evolution reaction (OER) in alkaline electrolytes. However, it is extremely difficult to enclose the β-NiOOH crystal with undercoordinated facets because of its inevitable crystal transformation to γ-NiOOH, resulting in the exfoliation of the catalytic surfaces. Herein, we demonstrate {111}-faceted Ni octahedra as the parent substrates whose surfaces are easily transformed to catalytically active β-NiOOH during the alkaline OER. Electron microscopic measurements demonstrate that the horizontally stacked β-NiOOH on the surfaces of Ni octahedra has resistance to further oxidation to γ-NiOOH. By contrast, significant crystal transformation and thus the exfoliation of the γ-NiOOH sheets can be observed on the surfaces of Ni cubes and rhombic dodecahedra (RDs). Electrocatalytic measurements show that the β-NiOOH formed on Ni octahedra exhibits highly enhanced OER durability compared to the Ni cubes, Ni RDs, and the state-of-the-art Ir/C catalysts.
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Affiliation(s)
- Byeongyoon Kim
- Department of Chemistry , Korea University , Seoul 02841 , Korea
- Center for Molecular Spectroscopy and Dynamics , Institute for Basic Science (IBS) , Seoul 02841 , Korea
| | - Aram Oh
- Korea Basic Science Institute (KBSI) , Seoul 02841 , Korea
| | - Mrinal Kanti Kabiraz
- Department of Chemistry and Green-Nano Materials Research Center , Kyungpook National University , Daegu 41566 , Korea
| | - Youngmin Hong
- Department of Chemistry and Green-Nano Materials Research Center , Kyungpook National University , Daegu 41566 , Korea
| | - Jinwhan Joo
- Department of Chemistry , Korea University , Seoul 02841 , Korea
- Center for Molecular Spectroscopy and Dynamics , Institute for Basic Science (IBS) , Seoul 02841 , Korea
| | - Hionsuck Baik
- Korea Basic Science Institute (KBSI) , Seoul 02841 , Korea
| | - Sang-Il Choi
- Department of Chemistry and Green-Nano Materials Research Center , Kyungpook National University , Daegu 41566 , Korea
| | - Kwangyeol Lee
- Department of Chemistry , Korea University , Seoul 02841 , Korea
- Center for Molecular Spectroscopy and Dynamics , Institute for Basic Science (IBS) , Seoul 02841 , Korea
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128
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Fu L, Yang F, Cheng G, Luo W. Ultrathin Ir nanowires as high-performance electrocatalysts for efficient water splitting in acidic media. NANOSCALE 2018; 10:1892-1897. [PMID: 29313049 DOI: 10.1039/c7nr09377b] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The search for active and stable bifunctional electrocatalysts toward acidic overall water splitting is under increasing demand for the development of polymer electrolyte membrane (PEM) electrolyzers. However, developing bifunctional electrocatalysts with Pt-like activity and superior stability under acidic media still remains a big challenge. Herein, we report a successful synthesis of Ir wavy nanowires with an ultrathin diameter of 1.7 nm through a simple wet-chemical approach. Benefiting from the unique morphology with high aspect ratios and a large specific surface area, the as-synthesized ultrathin Ir wavy nanowires exhibit enhanced activity and durability for both the oxygen evolution reaction and the hydrogen evolution reaction in acidic electrolytes. Moreover, when used for overall acidic water splitting, a current density of 10 mA cm-2 is achieved at only a cell voltage of 1.62 V in 0.1 M HClO4 electrolyte with long-term stability. In view of the excellent electrochemical water splitting performance and superior stability in acidic electrolytes, we believe that the obtained Ir wavy nanowires could be potential alternative catalysts toward PEM water electrolysis.
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Affiliation(s)
- Luhong Fu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China.
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129
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Hwang H, Kwon T, Kim HY, Park J, Oh A, Kim B, Baik H, Joo SH, Lee K. Ni@Ru and NiCo@Ru Core-Shell Hexagonal Nanosandwiches with a Compositionally Tunable Core and a Regioselectively Grown Shell. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:1702353. [PMID: 29171686 DOI: 10.1002/smll.201702353] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 09/19/2017] [Indexed: 06/07/2023]
Abstract
The development of highly active electrocatalysts is crucial for the advancement of renewable energy conversion devices. The design of core-shell nanoparticle catalysts represents a promising approach to boost catalytic activity as well as save the use of expensive precious metals. Here, a simple, one-step synthetic route is reported to prepare hexagonal nanosandwich-shaped Ni@Ru core-shell nanoparticles (Ni@Ru HNS), in which Ru shell layers are overgrown in a regioselective manner on the top and bottom, and around the center section of a hexagonal Ni nanoplate core. Notably, the synthesis can be extended to NiCo@Ru core-shell nanoparticles with tunable core compositions (Ni3 Cox @Ru HNS). Core-shell HNS structures show superior electrocatalytic activity for the oxygen evolution reaction (OER) to a commercial RuO2 black catalyst, with their OER activity being dependent on their core compositions. The observed trend in OER activity is correlated to the population of Ru oxide (Ru4+ ) species, which can be modulated by the core compositions.
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Affiliation(s)
- Hyeyoun Hwang
- Department of Chemistry, Korea University, Seoul, 02841, South Korea
| | - Taehyun Kwon
- Department of Chemistry, Korea University, Seoul, 02841, South Korea
- Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science (IBS), Seoul, 02841, South Korea
| | - Ho Young Kim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, South Korea
| | - Jongsik Park
- Department of Chemistry, Korea University, Seoul, 02841, South Korea
- Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science (IBS), Seoul, 02841, South Korea
| | - Aram Oh
- Department of Chemistry, Korea University, Seoul, 02841, South Korea
| | - Byeongyoon Kim
- Department of Chemistry, Korea University, Seoul, 02841, South Korea
- Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science (IBS), Seoul, 02841, South Korea
| | - Hionsuck Baik
- Seoul Center, Korea Basic Science Institute (KBSI), Seoul, 02841, South Korea
| | - Sang Hoon Joo
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, South Korea
- Department of Chemistry, UNIST, Ulsan, 44919, South Korea
| | - Kwangyeol Lee
- Department of Chemistry, Korea University, Seoul, 02841, South Korea
- Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science (IBS), Seoul, 02841, South Korea
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130
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Feng J, Lv F, Zhang W, Li P, Wang K, Yang C, Wang B, Yang Y, Zhou J, Lin F, Wang GC, Guo S. Iridium-Based Multimetallic Porous Hollow Nanocrystals for Efficient Overall-Water-Splitting Catalysis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1703798. [PMID: 29083497 DOI: 10.1002/adma.201703798] [Citation(s) in RCA: 213] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 08/25/2017] [Indexed: 06/07/2023]
Abstract
The development of active and durable bifunctional electrocatalysts for overall water splitting is mandatory for renewable energy conversion. This study reports a general method for controllable synthesis of a class of IrM (M = Co, Ni, CoNi) multimetallic porous hollow nanocrystals (PHNCs), through etching Ir-based, multimetallic, solid nanocrystals using Fe3+ ions, as catalysts for boosting overall water splitting. The Ir-based multimetallic PHNCs show transition-metal-dependent bifunctional electrocatalytic activities for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in acidic electrolyte, with IrCo and IrCoNi PHNCs being the best for HER and OER, respectively. First-principles calculations reveal a ligand effect, induced by alloying Ir with 3d transition metals, can weaken the adsorption energy of oxygen intermediates, which is the key to realizing much-enhanced OER activity. The IrCoNi PHNCs are highly efficient in overall-water-splitting catalysis by showing a low cell voltage of only 1.56 V at a current density of 2 mA cm-2 , and only 8 mV of polarization-curve shift after a 1000-cycle durability test in 0.5 m H2 SO4 solution. This work highlights a potentially powerful strategy toward the general synthesis of novel, multimetallic, PHNCs as highly active and durable bifunctional electrocatalysts for high-performance electrochemical overall-water-splitting devices.
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Affiliation(s)
- Jianrui Feng
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China
| | - Fan Lv
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China
| | - Weiyu Zhang
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China
| | - Peihao Li
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China
| | - Kai Wang
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China
| | - Chao Yang
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China
| | - Bin Wang
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China
| | - Yong Yang
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China
| | - Jinhui Zhou
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China
| | - Fei Lin
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China
| | - Gui-Chang Wang
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin, 300071, P. R. China
| | - Shaojun Guo
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China
- BIC-ESAT, College of Engineering, Peking University, Beijing, 100871, P. R. China
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