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Kawashima K, Márquez RA, Smith LA, Vaidyula RR, Carrasco-Jaim OA, Wang Z, Son YJ, Cao CL, Mullins CB. A Review of Transition Metal Boride, Carbide, Pnictide, and Chalcogenide Water Oxidation Electrocatalysts. Chem Rev 2023. [PMID: 37967475 DOI: 10.1021/acs.chemrev.3c00005] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2023]
Abstract
Transition metal borides, carbides, pnictides, and chalcogenides (X-ides) have emerged as a class of materials for the oxygen evolution reaction (OER). Because of their high earth abundance, electrical conductivity, and OER performance, these electrocatalysts have the potential to enable the practical application of green energy conversion and storage. Under OER potentials, X-ide electrocatalysts demonstrate various degrees of oxidation resistance due to their differences in chemical composition, crystal structure, and morphology. Depending on their resistance to oxidation, these catalysts will fall into one of three post-OER electrocatalyst categories: fully oxidized oxide/(oxy)hydroxide material, partially oxidized core@shell structure, and unoxidized material. In the past ten years (from 2013 to 2022), over 890 peer-reviewed research papers have focused on X-ide OER electrocatalysts. Previous review papers have provided limited conclusions and have omitted the significance of "catalytically active sites/species/phases" in X-ide OER electrocatalysts. In this review, a comprehensive summary of (i) experimental parameters (e.g., substrates, electrocatalyst loading amounts, geometric overpotentials, Tafel slopes, etc.) and (ii) electrochemical stability tests and post-analyses in X-ide OER electrocatalyst publications from 2013 to 2022 is provided. Both mono and polyanion X-ides are discussed and classified with respect to their material transformation during the OER. Special analytical techniques employed to study X-ide reconstruction are also evaluated. Additionally, future challenges and questions yet to be answered are provided in each section. This review aims to provide researchers with a toolkit to approach X-ide OER electrocatalyst research and to showcase necessary avenues for future investigation.
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Affiliation(s)
- Kenta Kawashima
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Raúl A Márquez
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Lettie A Smith
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Rinish Reddy Vaidyula
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Omar A Carrasco-Jaim
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Ziqing Wang
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Yoon Jun Son
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Chi L Cao
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - C Buddie Mullins
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
- Center for Electrochemistry, The University of Texas at Austin, Austin, Texas 78712, United States
- H2@UT, The University of Texas at Austin, Austin, Texas 78712, United States
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2
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Singh TI, Maibam A, Cha DC, Yoo S, Babarao R, Lee SU, Lee S. High-Alkaline Water-Splitting Activity of Mesoporous 3D Heterostructures: An Amorphous-Shell@Crystalline-Core Nano-Assembly of Co-Ni-Phosphate Ultrathin-Nanosheets and V- Doped Cobalt-Nitride Nanowires. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2201311. [PMID: 35666047 PMCID: PMC9376825 DOI: 10.1002/advs.202201311] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 05/04/2022] [Indexed: 05/27/2023]
Abstract
Introducing amorphous and ultrathin nanosheets of transition bimetal phosphate arrays that are highly active in the oxygen evolution reaction (OER) as shells over an electronically modulated crystalline core with low hydrogen absorption energy for an excellent hydrogen evolution reaction (HER) can boost the sluggish kinetics of the OER and HER in alkaline electrolytes. Therefore, in this study, ultrathin and amorphous cobalt-nickel-phosphate (CoNiPOx ) nanosheet arrays are deposited over vanadium (V)-doped cobalt-nitride (V3% -Co4 N) crystalline core nanowires to obtain amorphous-shell@crystalline-core mesoporous 3D-heterostructures (CoNiPOx @V-Co4 N/NF) as bifunctional electrocatalysts. The optimized electrocatalyst shows extremely low HER and OER overpotentials of 53 and 270 mV at 10 mA cm-2 , respectively. The CoNiPOx @V3% -Co4 N/NF (+/-) electrolyzer utilizing the electrocatalyst as both anode and cathode demonstrates remarkable overall water-splitting activity, requiring a cell potential of only 1.52 V at 10 mA cm-2 , 30 mV lower than that of the RuO2 /NF (+)/20%-Pt/C/NF (-) electrolyzer. Such impressive bifunctional activities can be attributed to abundant active sites, adjusted electronic structure, lower charge-transfer resistance, enhanced electrochemically active surface area (ECSA), and surface- and volume-confined electrocatalysis resulting from the synergistic effects of the crystalline V3% -Co4 N core and amorphous CoNiPOx shells boosting water splitting in alkaline media.
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Affiliation(s)
- Thangjam Ibomcha Singh
- Department of Chemical and Molecular EngineeringHanyang University ERICAAnsan15588Republic of Korea
- Center for Bionano Intelligence Education and ResearchHanyang University ERICAAnsan15588Republic of Korea
| | - Ashakiran Maibam
- School of ScienceRMIT UniversityMelbourneVictoria3001Australia
- Physical and Materials DivisionCSIR‐National Chemical LaboratoryPune411 008India
- Academy of Scientific and Innovative ResearchCSIR‐Human Resource Development Centre (CSIR‐HRDC) CampusPostal Staff College AreaGhaziabadUttar Pradesh201002India
| | - Dun Chan Cha
- Center for Bionano Intelligence Education and ResearchHanyang University ERICAAnsan15588Republic of Korea
- Department of Applied ChemistryHanyang University ERICAAnsan15588Republic of Korea
| | - Sunghoon Yoo
- Department of Chemical and Molecular EngineeringHanyang University ERICAAnsan15588Republic of Korea
- Department of Applied ChemistryHanyang University ERICAAnsan15588Republic of Korea
| | - Ravichandar Babarao
- School of ScienceRMIT UniversityMelbourneVictoria3001Australia
- ManufacturingCSIRONormanby RoadVictoriaClayton3168Australia
| | - Sang Uck Lee
- Department of Chemical and Molecular EngineeringHanyang University ERICAAnsan15588Republic of Korea
- Center for Bionano Intelligence Education and ResearchHanyang University ERICAAnsan15588Republic of Korea
- Department of Applied ChemistryHanyang University ERICAAnsan15588Republic of Korea
| | - Seunghyun Lee
- Department of Chemical and Molecular EngineeringHanyang University ERICAAnsan15588Republic of Korea
- Center for Bionano Intelligence Education and ResearchHanyang University ERICAAnsan15588Republic of Korea
- Department of Applied ChemistryHanyang University ERICAAnsan15588Republic of Korea
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3
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Malik B, Vijaya Sankar K, Konar R, Tsur Y, Nessim GD. Determining the Electrochemical Oxygen Evolution Reaction Kinetics of Fe
3
S
4
@Ni
3
S
2
Using Distribution Function of Relaxation Times. ChemElectroChem 2020. [DOI: 10.1002/celc.202001410] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Bibhudatta Malik
- Department of Chemistry and Institute of Nanotechnology Bar-Ilan University Ramat Gan 52900 Israel
| | - Kalimuthu Vijaya Sankar
- The Nancy and Stephen Grand Technion Energy Program Technion-Israel Institute of Technology Haifa 3200003 Israel
- Department of Chemical Engineering Technion-Israel Institute of Technology Haifa 3200003 Israel
| | - Rajashree Konar
- Department of Chemistry and Institute of Nanotechnology Bar-Ilan University Ramat Gan 52900 Israel
| | - Yoed Tsur
- The Nancy and Stephen Grand Technion Energy Program Technion-Israel Institute of Technology Haifa 3200003 Israel
- Department of Chemical Engineering Technion-Israel Institute of Technology Haifa 3200003 Israel
| | - Gilbert Daniel Nessim
- Department of Chemistry and Institute of Nanotechnology Bar-Ilan University Ramat Gan 52900 Israel
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4
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Tomboc GM, Tesfaye Gadisa B, Jun M, Chaudhari NK, Kim H, Lee K. Carbon Transition-metal Oxide Electrodes: Understanding the Role of Surface Engineering for High Energy Density Supercapacitors. Chem Asian J 2020; 15:1628-1647. [PMID: 32301268 DOI: 10.1002/asia.202000324] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Indexed: 12/28/2022]
Abstract
Supercapacitors store electrical energy by ion adsorption at the interface of the electrode-electrolyte (electric double layer capacitance, EDLC) or through faradaic process involving direct transfer of electrons via oxidation/reduction reactions at one electrode to the other (pseudocapacitance). The present minireview describes the recent developments and progress of carbon-transition metal oxides (C-TMO) hybrid materials that show great promise as an efficient electrode towards supercapacitors among various material types. The review describes the synthetic methods and electrode preparation techniques along with the changes in the physical and chemical properties of each component in the hybrid materials. The critical factors in deriving both EDLC and pseudocapacitance storage mechanisms are also identified in the hope of pointing to the successful hybrid design principles. For example, a robust carbon-metal oxide interaction was identified as most important in facilitating the charge transfer process and activating high energy storage mechanism, and thus methodologies to establish a strong carbon-metal oxide contact are discussed. Finally, this article concludes with suggestions for the future development of the fabrication of high-performance C-TMO hybrid supercapacitor electrodes.
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Affiliation(s)
- Gracita M Tomboc
- Department of Chemistry and Research Institute for Natural Sciences, Korea University, Seoul, 02841, Republic of Korea
| | - Bekelcha Tesfaye Gadisa
- Department of Energy Science and Technology Smart Living Innovation Technology Center, Myongji University, Yongin, Gyeonggi-do, 17058, Republic of Korea
| | - Minki Jun
- Department of Chemistry and Research Institute for Natural Sciences, Korea University, Seoul, 02841, Republic of Korea
| | - Nitin K Chaudhari
- Department of Science School of Technology, Pandit Deendayal Petroleum University, Gandhinagar, 382007, Gujarat, India
| | - Hern Kim
- Department of Energy Science and Technology Smart Living Innovation Technology Center, Myongji University, Yongin, Gyeonggi-do, 17058, Republic of Korea
| | - Kwangyeol Lee
- Department of Chemistry and Research Institute for Natural Sciences, Korea University, Seoul, 02841, Republic of Korea
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5
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Lin Y, Chen G, Wan H, Chen F, Liu X, Ma R. 2D Free-Standing Nitrogen-Doped Ni-Ni 3 S 2 @Carbon Nanoplates Derived from Metal-Organic Frameworks for Enhanced Oxygen Evolution Reaction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1900348. [PMID: 30957975 DOI: 10.1002/smll.201900348] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 03/03/2019] [Indexed: 06/09/2023]
Abstract
2D metal-organic frameworks (2D MOFs) are promising templates for the fabrication of carbon supported 2D metal/metal sulfide nanocomposites. Herein, controllable synthesis of a newly developed 2D Ni-based MOF nanoplates in well-defined rectangle morphology is first realized via a pyridine-assisted bottom-up solvothermal treatment of NiSO4 and 4,4'-bipyridine. The thickness of the MOF nanoplates can be controlled to below 20 nm, while the lateral size can be tuned in a wide range with different amounts of pyridine. Subsequent pyrolysis treatment converts the MOF nanoplates into 2D free-standing nitrogen-doped Ni-Ni3 S2 @carbon nanoplates. The obtained Ni-Ni3 S2 nanoparticles encapsulated in the N-doped carbon matrix exhibits high electrocatalytic activity in oxygen evolution reaction. A low overpotential of 284.7 mV at a current density of 10 mA cm-2 is achieved in alkaline solution, which is among the best reported performance of substrate-free nickel sulfides based nanomaterials.
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Affiliation(s)
- Yifan Lin
- School of Materials Science and Engineering, Central South University, Changsha, Hunan, 410083, P. R. China
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki, 305-0044, Japan
| | - Gen Chen
- School of Materials Science and Engineering, Central South University, Changsha, Hunan, 410083, P. R. China
| | - Hao Wan
- School of Materials Science and Engineering, Central South University, Changsha, Hunan, 410083, P. R. China
| | - Fashen Chen
- School of Materials Science and Engineering, Central South University, Changsha, Hunan, 410083, P. R. China
| | - Xiaohe Liu
- School of Materials Science and Engineering, Central South University, Changsha, Hunan, 410083, P. R. China
| | - Renzhi Ma
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki, 305-0044, Japan
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6
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Shinde N, Shinde P, Xia QX, Yun JM, Mane R, Kim KH. Electrocatalytic Water Splitting through the Ni x S y Self-Grown Superstructures Obtained via a Wet Chemical Sulfurization Process. ACS OMEGA 2019; 4:6486-6491. [PMID: 31459781 PMCID: PMC6648555 DOI: 10.1021/acsomega.9b00132] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 03/27/2019] [Indexed: 06/10/2023]
Abstract
We report water-splitting application of chemically stable self-grown nickel sulfide (Ni x S y ) electrocatalysts of different nanostructures including rods, flakes, buds, petals, etc., synthesized by a hydrothermal method on a three-dimensional Ni foam (NiF) in the presence of different sulfur-ion precursors, e.g., thioacetamide, sodium thiosulfate, thiourea, and sodium sulfide. The S2- ions are produced after decomposition from respective sulfur precursors, which, in general, react with oxidized Ni2+ ions from the NiF at optimized temperatures and pressures, forming the Ni x S y superstructures. These Ni x S y electrocatalysts are initially screened for their structure, morphology, phase purity, porosity, and binding energy by means of various sophisticated instrumentation technologies. The as-obtained Ni x S y electrocatalyst from sodium thiosulfate endows an overpotential of 200 mV. The oxygen evolution overpotential results of Ni x S y electrocatalysts are comparable or superior to those reported previously for other self-grown Ni x S y superstructure morphologies.
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Affiliation(s)
- Nanasaheb Shinde
- National
Core Research Centre for Hybrid Materials Solution and Global Frontier
R&D Center for Hybrid Interface Materials, Pusan National University, 30, Jangjeon-dong, Geumjung-gu, Busan 609-735, Republic
of Korea
| | - Pritamkumar Shinde
- National
Core Research Centre for Hybrid Materials Solution and Global Frontier
R&D Center for Hybrid Interface Materials, Pusan National University, 30, Jangjeon-dong, Geumjung-gu, Busan 609-735, Republic
of Korea
| | - Qi Xun Xia
- National
Core Research Centre for Hybrid Materials Solution and Global Frontier
R&D Center for Hybrid Interface Materials, Pusan National University, 30, Jangjeon-dong, Geumjung-gu, Busan 609-735, Republic
of Korea
- School
of Materials Science and Engineering, Henan
Polytechnic University, Jiaozuo 454000, China
| | - Je Moon Yun
- National
Core Research Centre for Hybrid Materials Solution and Global Frontier
R&D Center for Hybrid Interface Materials, Pusan National University, 30, Jangjeon-dong, Geumjung-gu, Busan 609-735, Republic
of Korea
| | - Rajaram Mane
- National
Core Research Centre for Hybrid Materials Solution and Global Frontier
R&D Center for Hybrid Interface Materials, Pusan National University, 30, Jangjeon-dong, Geumjung-gu, Busan 609-735, Republic
of Korea
| | - Kwang Ho Kim
- National
Core Research Centre for Hybrid Materials Solution and Global Frontier
R&D Center for Hybrid Interface Materials, Pusan National University, 30, Jangjeon-dong, Geumjung-gu, Busan 609-735, Republic
of Korea
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7
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Hao P, Zhu W, Lei F, Ma X, Xie J, Tan H, Li L, Liu H, Tang B. Morphology and electronic structure modulation induced by fluorine doping in nickel-based heterostructures for robust bifunctional electrocatalysis. NANOSCALE 2018; 10:20384-20392. [PMID: 30376026 DOI: 10.1039/c8nr06756b] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Fabrication of advanced electrocatalysts with high activity and durability is urgently needed to achieve energy conversion and pollution treatment at the same time. Herein, we highlight a fluorine-doped nickel-based heterostructure, in which fluorine doping displays a dual effect in Ni(OH)2 nanosheets/Ni3S2 heteronanorods. On the one hand, fluorine doping can facilitate the formation of Ni(OH)2 nanosheets/Ni3S2 heteronanorods through one-step in situ growth on nickel foams. The unique heterostructure enables good exposure of abundant active sites and highly active heterointerfaces. On the other hand, the uniform incorporation of fluorine can effectively modulate the electron density at the Fermi level of Ni3S2, contributing to the improved electrical conductivity and charge transfer efficiency, further improving the electrocatalytic activity in the oxygen evolution reaction (OER) and urea oxidation reaction (UOR). The optimal heterostructure presents a low overpotential of 360 mV to reach the OER current density of 100 mA cm-2. Finally, this heterostructure also displays a superior UOR anodic peak current of about 322.9 mA cm-2, almost the highest value at the anodic peak compared to the literature.
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Affiliation(s)
- Pin Hao
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China.
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8
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Ho TA, Bae C, Nam H, Kim E, Lee SY, Park JH, Shin H. Metallic Ni 3S 2 Films Grown by Atomic Layer Deposition as an Efficient and Stable Electrocatalyst for Overall Water Splitting. ACS APPLIED MATERIALS & INTERFACES 2018; 10:12807-12815. [PMID: 29578327 DOI: 10.1021/acsami.8b00813] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We describe the direct preparation of crystalline Ni3S2 thin films via atomic layer deposition (ALD) techniques at temperatures as low as 250 °C without postthermal treatments. A new ALD chemistry is proposed using bis(1-dimethylamino-2-methyl-2-butoxy) nickel(II) [Ni(dmamb)2] and H2S as precursors. Homogeneous and conformal depositions of Ni3S2 films were achieved on 4 in. wafers (both metal and oxide substrates, including Au and SiO2). The resulting crystalline Ni3S2 layers exhibited highly efficient and stable performance as electrocatalysts for both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) in alkaline solutions, with a low overpotential of 300 mV and a high turnover frequency for HER and an overpotential of 400 mV for OER (at a current density of 10 mA/cm2). Using our Ni3S2 films as both the cathode and the anode, two-electrode full-cell electrolyzers were constructed, which showed stable operation for 100 h at a current density of 10 mA/cm2. The proposed ALD electrocatalysts on planar surfaces exhibited the best performance among Ni3S2 materials for overall water splitting recorded to date.
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Affiliation(s)
| | | | | | | | - Seung Yong Lee
- Center for Materials Architecturing , Korea Institute of Science Technology , Seoul 136-791 , South Korea
| | - Jong Hyeok Park
- Department of Chemical and Biomolecular Engineering , YonSei University , Seoul 120-749 , South Korea
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9
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Thakur S, Maiti S, Paul T, Besra N, Sarkar S, Chattopadhyay KK. Geometrically intricate sheet-on-pillar/flake hierarchy embracing cobaltosic and manganese oxides over flexible carbon scaffold for binder-free high-energy-density supercapacitor. CrystEngComm 2018. [DOI: 10.1039/c8ce01182f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sheet-on-rod/flake hierarchy embracing Co3O4 and MnO2 on carbon fabric is used for binder-free high-energy-density supercapacitor. Electrochemical behaviour is illuminated on the basis of shape-porosity-property correlation.
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Affiliation(s)
- S. Thakur
- School of Materials Science and Nanotechnology
- Jadavpur University
- Kolkata 700032
- India
| | - S. Maiti
- St Thomas College of Engineering & Technology
- Kolkata 700023
- India
| | - T. Paul
- School of Materials Science and Nanotechnology
- Jadavpur University
- Kolkata 700032
- India
| | - N. Besra
- Departments of Physics
- Jadavpur University
- Kolkata 700032
- India
| | - S. Sarkar
- Departments of Physics
- Jadavpur University
- Kolkata 700032
- India
| | - K. K. Chattopadhyay
- School of Materials Science and Nanotechnology
- Jadavpur University
- Kolkata 700032
- India
- Departments of Physics
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10
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Shang X, Chi JQ, Liu ZZ, Dong B, Yan KL, Gao WK, Zeng JB, Chai YM, Liu CG. Ternary Ni-Fe-V sulfides bundles on nickel foam as free-standing hydrogen evolution electrodes in alkaline medium. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.10.050] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Qureshi N, Arbuj S, Shinde M, Rane S, Kulkarni M, Amalnerkar D, Lee H. Swift tuning from spherical molybdenum microspheres to hierarchical molybdenum disulfide nanostructures by switching from solvothermal to hydrothermal synthesis route. NANO CONVERGENCE 2017; 4:25. [PMID: 29034145 PMCID: PMC5620365 DOI: 10.1186/s40580-017-0119-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 09/15/2017] [Indexed: 06/07/2023]
Abstract
Herein, we report the synthesis of metallic molybdenum microspheres and hierarchical MoS2 nanostructures by facile template-free solvothermal and hydrothermal approach, respectively. The morphological transition of the Mo microspheres to hierarchical MoS2 nanoflower architectures is observed to be accomplished with change in solvent from ethylenediamine to water. The resultant marigold flower-like MoS2 nanostructures are few layers thick with poor crystallinity while spherical ball-like molybdenum microspheres exhibit better crystalline nature. This is the first report pertaining to the synthesis of Mo microspheres and MoS2 nanoflowers without using any surfactant, template or substrate in hydro/solvothermal regime. It is opined that such nanoarchitectures of MoS2 are useful candidates for energy related applications such as hydrogen evolution reaction, Li ion battery and pseudocapacitors. Inquisitively, metallic Mo can potentially act as catalyst as well as fairly economical Surface Enhanced Raman Spectroscopy (SERS) substrate in biosensor applications.
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Affiliation(s)
- Nilam Qureshi
- Centre for Materials for Electronics Technology (C-MET), Panchwati Off Pashan Road, Pune, 411008 India
| | - Sudhir Arbuj
- Centre for Materials for Electronics Technology (C-MET), Panchwati Off Pashan Road, Pune, 411008 India
| | - Manish Shinde
- Centre for Materials for Electronics Technology (C-MET), Panchwati Off Pashan Road, Pune, 411008 India
| | - Sunit Rane
- Centre for Materials for Electronics Technology (C-MET), Panchwati Off Pashan Road, Pune, 411008 India
| | - Milind Kulkarni
- Centre for Materials for Electronics Technology (C-MET), Panchwati Off Pashan Road, Pune, 411008 India
| | - Dinesh Amalnerkar
- Institute of Nano Science and Technology, Hanyang University, Seoul, 04763 Republic of Korea
| | - Haiwon Lee
- Institute of Nano Science and Technology, Hanyang University, Seoul, 04763 Republic of Korea
- Department of Chemistry, Hanyang University, Seoul, 04763 Republic of Korea
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12
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Chaudhari NK, Jin H, Kim B, Lee K. Nanostructured materials on 3D nickel foam as electrocatalysts for water splitting. NANOSCALE 2017; 9:12231-12247. [PMID: 28819660 DOI: 10.1039/c7nr04187j] [Citation(s) in RCA: 151] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Highly efficient and low-cost electrocatalysts are essential for water spitting via electrolysis in an economically viable fashion. However, the best catalytic performance is found with noble metal-based electrocatalysts, which presents a formidable obstacle for the commercial success of electrolytic water splitting-based H2 production due to their relatively high cost and scarcity. Therefore, the development of alternative inexpensive earth-abundant electrode materials with excellent electrocatalytic properties is of great urgency. In general, efficient electrocatalysts must possess several key characteristics such as low overpotential, good electrocatalytic activity, high stability, and low production costs. Direct synthesis of nanostructured catalysts on a conducting substrate may potentially improve the performance of the resultant electrocatalysts because of their high catalytic surface areas and the synergistic effect between the electrocatalyst and the conductive substrate. In this regard, three dimensional (3D) nickel foams have been advantageously utilized as electrode substrates as they offer a large active surface area and a highly conductive continuous porous 3D network. In this review, we discuss the most recent developments in nanostructured materials directly synthesized on 3D nickel foam as potential electrode candidates for electrochemical water electrolysis, namely, the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER). We also provide perspectives and outlooks for catalysts grown directly on 3D conducting substrates for future sustainable energy technologies.
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Affiliation(s)
- Nitin K Chaudhari
- Department of Chemistry, Korea University, Seoul, 02841, Republic of Korea
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