1
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Lv D, Yin D, Yang Y, Shao H, Li D, Wang T, Ma Q, Li F, Yu W, Han C, Dong X. Self-supporting multi-channel Janus carbon fibers: A new strategy to achieve an efficient bifunctional electrocatalyst for overall water splitting. J Colloid Interface Sci 2024; 663:270-279. [PMID: 38401447 DOI: 10.1016/j.jcis.2024.02.162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 02/16/2024] [Accepted: 02/20/2024] [Indexed: 02/26/2024]
Abstract
A new type of self-supporting multi-channel Janus carbon fibers with efficient water splitting has been successfully manufactured using a specially designed parallel spinneret through electrospinning technology and subsequent carbonization technique. Every single Janus fiber composes of a half side of Mo2C and the other half side of Ni components as Mo2C, Ni embedded in N-doped multi-channel Janus carbon fibers ([Mo2C/C]//[Ni/C]-NMCFs) for overall water splitting. Under optimized condition, the hydrogen evolution reaction overpotential of [Mo2C/C]//[Ni/C]-NMCFs (62 mV) is just 24 mV higher than 20 wt% Pt/C (38 mV) at a current density of 10 mA cm-2. Furthermore, it achieves current density of 10 mA cm-2 to require an overpotential of 324 mV for oxygen evolution reaction. Additionally, the cell assembled by the identical [Mo2C/C]//[Ni/C]-NMCFs catalyst as both the cathode and anode needs only 1.607 V at a current density of 10 mA cm-2, which is only 0.022 V higher than that of Pt/C-IrO2 electrodes. Moreover, [Mo2C/C]//[Ni/C]-NMCFs catalyst also exhibits a long-term stability. The synergistic effect and unique heterostructure of Mo2C and Ni enhance the catalytic activity.
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Affiliation(s)
- Dongxue Lv
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022, Jilin, China
| | - Duanduan Yin
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022, Jilin, China.
| | - Ying Yang
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022, Jilin, China
| | - Hong Shao
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022, Jilin, China
| | - Dan Li
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022, Jilin, China
| | - Tianqi Wang
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022, Jilin, China
| | - Qianli Ma
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022, Jilin, China
| | - Feng Li
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022, Jilin, China
| | - Wensheng Yu
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022, Jilin, China
| | - Ce Han
- State Key Laboratory of Electroanalytical Chemistry, Jilin Province Key Laboratory of Low Carbon Chemical Power, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China.
| | - Xiangting Dong
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022, Jilin, China.
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2
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Bayhan Z, El-Demellawi JK, Yin J, Khan Y, Lei Y, Alhajji E, Wang Q, Hedhili MN, Alshareef HN. A Laser-Induced Mo 2 CT x MXene Hybrid Anode for High-Performance Li-Ion Batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2208253. [PMID: 37183297 DOI: 10.1002/smll.202208253] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 03/26/2023] [Indexed: 05/16/2023]
Abstract
MXenes, a fast-growing family of two-dimensional (2D) transition metal carbides/nitrides, are promising for electronics and energy storage applications. Mo2 CTx MXene, in particular, has demonstrated a higher capacity than other MXenes as an anode for Li-ion batteries. Yet, such enhanced capacity is accompanied by slow kinetics and poor cycling stability. Herein, it is revealed that the unstable cycling performance of Mo2 CTx is attributed to the partial oxidation into MoOx with structural degradation. A laser-induced Mo2 CTx /Mo2 C (LS-Mo2 CTx ) hybrid anode has been developed, of which the Mo2 C nanodots boost redox kinetics, and the laser-reduced oxygen content prevents the structural degradation caused by oxidation. Meanwhile, the strong connections between the laser-induced Mo2 C nanodots and Mo2 CTx nanosheets enhance conductivity and stabilize the structure during charge-discharge cycling. The as-prepared LS-Mo2 CTx anode exhibits an enhanced capacity of 340 mAh g-1 vs 83 mAh g-1 (for pristine) and an improved cycling stability (capacity retention of 106.2% vs 80.6% for pristine) over 1000 cycles. The laser-induced synthesis approach underlines the potential of MXene-based hybrid materials for high-performance energy storage applications.
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Affiliation(s)
- Zahra Bayhan
- Materials Science and Engineering, Physical Science and Engineering (PSE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
- Department of Physics, College of Science, Princess Nourah bint Abdulrahman University (PNU), Riyadh, 11671, Saudi Arabia
| | - Jehad K El-Demellawi
- Materials Science and Engineering, Physical Science and Engineering (PSE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
- KAUST Upstream Research Center (KURC), EXPEC Advanced Research Center (ARC), Saudi Aramco, Thuwal, 23955-6900, Saudi Arabia
| | - Jian Yin
- Materials Science and Engineering, Physical Science and Engineering (PSE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Yusuf Khan
- Materials Science and Engineering, Physical Science and Engineering (PSE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Yongjiu Lei
- Materials Science and Engineering, Physical Science and Engineering (PSE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Eman Alhajji
- Materials Science and Engineering, Physical Science and Engineering (PSE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Qingxiao Wang
- Core Labs, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Mohamed N Hedhili
- Core Labs, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Husam N Alshareef
- Materials Science and Engineering, Physical Science and Engineering (PSE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
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3
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Wang Y, He J, Zang Y, Zhao C, Di M, Wang B. Controlled synthesis of Mo 2C micron flowers via vapor-liquid-solid method as enhanced electrocatalyst for hydrogen evolution reaction. RSC Adv 2023; 13:26144-26147. [PMID: 37671004 PMCID: PMC10475879 DOI: 10.1039/d3ra04813f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 08/18/2023] [Indexed: 09/07/2023] Open
Abstract
Mo2C demonstrates excellent performance in catalysis, and it has been found to possess excellent hydrogen evolution reaction (HER) catalytic activity and highly efficient nitrogen fixation. The catalytic activity of Mo2C is greatly influenced and restricted by the preparation method. Sintering and carbon deposition, which affect the catalytic activity of Mo2C, are inevitable in the traditional vapor-solid-solid (VSS) process. In this study, we report the controllable synthesis of α-Mo2C micron flowers by adjusting the growth temperature via a vapor-liquid-solid (VLS) process. The density of the Mo2C micron flowers is closely related to the concentration of Na2MoO4 aqueous solution. The as-grown Mo2C micron flowers dispersed with Pt are validated to be an enhanced collaborative electrocatalyst for HER against Pt/VSS-Mo2C.
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Affiliation(s)
- Yuwei Wang
- College of Physical Science and Technology, Bohai University Jinzhou 121013 China
| | - Jian He
- College of Chemistry and Materials Engineering, Bohai University Jinzhou 121013 China
| | - Yipeng Zang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
| | - Changbao Zhao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
| | - Miaomiao Di
- College of Chemistry and Materials Engineering, Bohai University Jinzhou 121013 China
| | - Bin Wang
- College of Chemistry and Materials Engineering, Bohai University Jinzhou 121013 China
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
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4
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Yang J, Bashir T, Lin Y, Gao L. A Ni-doped Mo 2C/NCF composite for efficient electrocatalytic hydrogen evolution. Chem Commun (Camb) 2023. [PMID: 37464869 DOI: 10.1039/d3cc01810e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
Ni-Mo2C nano catalysts dispersed on N-doped carbon flowers: a composite with nitrogen-containing carbon flowers carrying nickel-modified molybdenum carbide exhibits enhanced HER catalytic activity in alkaline electrolyte.
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Affiliation(s)
- Jie Yang
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China.
| | - Tariq Bashir
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China.
| | - Yanping Lin
- School of Physics and Energy, Xuzhou University of Technology, Xuzhou 221018, China
| | - Lijun Gao
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China.
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5
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Ragupathi J, Annal Therese H. Synthesis of One‐Dimensional Mo
2
C‐Embedded Carbon Nanofibers with Enhanced Lithium Storage Capacity for Lithium‐Ion Batteries. ChemistrySelect 2022. [DOI: 10.1002/slct.202201924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jeevani Ragupathi
- Nanotechnology Research Centre SRM Institute of Science and Technology, Kattankulathur Chengalpattu 603203, Tamil Nadu India
| | - Helen Annal Therese
- Department of Chemistry SRM Institute of Science and Technology, Kattankulathur Chengalpattu 603203 Tamil Nadu India
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6
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Pajares A, Liu X, Busacker JR, Ramírez de la Piscina P, Homs N. Supported Nanostructured Mo xC Materials for the Catalytic Reduction of CO 2 through the Reverse Water Gas Shift Reaction. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3165. [PMID: 36144954 PMCID: PMC9506042 DOI: 10.3390/nano12183165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/05/2022] [Accepted: 09/09/2022] [Indexed: 06/16/2023]
Abstract
MoxC-based catalysts supported on γ-Al2O3, SiO2 and TiO2 were prepared, characterized and studied in the reverse water gas shift (RWGS) at 548-673 K and atmospheric pressure, using CO2:H2 = 1:1 and CO2:H2 = 1:3 mol/mol reactant mixtures. The support used determined the crystalline MoxC phases obtained and the behavior of the supported nanostructured MoxC catalysts in the RWGS. All catalysts were active in the RWGS reaction under the experimental conditions used; CO productivity per mol of Mo was always higher than that of unsupported Mo2C prepared using a similar method in the absence of support. The CO selectivity at 673 K was above 94% for all the supported catalysts, and near 99% for the SiO2-supported. The MoxC/SiO2 catalyst, which contains a mixture of hexagonal Mo2C and cubic MoC phases, exhibited the best performance for CO production.
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Affiliation(s)
- Arturo Pajares
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica & Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
- Catalonia Institute for Energy Research (IREC), Jardins de les Dones de Negre 1, 08930 Barcelona, Spain
| | - Xianyun Liu
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica & Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
| | - Joan R. Busacker
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica & Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
| | - Pilar Ramírez de la Piscina
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica & Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
| | - Narcís Homs
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica & Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
- Catalonia Institute for Energy Research (IREC), Jardins de les Dones de Negre 1, 08930 Barcelona, Spain
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7
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Denis DK, Zaman FU, Hou L, Chen G, Yuan C. Spray-drying construction of nickel/cobalt/molybdenum based nano carbides embedded in porous carbon microspheres for lithium-ion batteries as anodes. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Hu ZN, Ai Y, Xu W, Zhang X, Sun Z, Guo L, Guo R, Wang Y, Ding K, Sun HB, Hu J, Liang Q, Yang Y. Iron Catalyzed Cascade Construction of Molybdenum Carbide Heterointerfaces for Understanding Hydrogen Evolution. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2200439. [PMID: 35355393 DOI: 10.1002/smll.202200439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 03/10/2022] [Indexed: 06/14/2023]
Abstract
The intercrystalline interfaces have been proven vital in heterostructure catalysts. However, it is still challenging to generate specified heterointerfaces and to make clear the mechanism of a reaction on the interface. Herein, this work proposes a strategy of Fe-catalyzed cascade formation of heterointerfaces for comprehending the hydrogen evolution reaction (HER). In the pure solid-phase reaction system, Fe catalyzes the in situ conversion of MoO2 to MoC and then Mo2 C, and the consecutive formation leaves lavish intercrystalline interfaces of MoO2 -MoC (in Fe-MoO2 /MoC@NC) or MoC-Mo2 C (in Fe-MoC/β-Mo2 C@NC), which contribute to HER activity. The improved HER activity on the interface leads to further checking of the mechanism with density functional theory calculation. The computation results reveal that the electroreduction (Volmer step) produced H* prefers to be adsorbed on Mo2 C; then two pathways are proposed for the HER on the interface of MoC-Mo2 C, including the single-molecular adsorption pathway (Rideal mechanism) and the bimolecular adsorption pathway (Langmuir-Hinshelwood mechanism). The calculation results further show that the former is favorable, and the reaction on the MoC-Mo2 C heterointerface significantly lowers the energy barriers of the rate-determining steps.
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Affiliation(s)
- Ze-Nan Hu
- Department of Chemistry, Northeastern University, Shenyang, 110819, China
| | - Yongjian Ai
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Beijing Key Lab of Microanalytical Methods & Instrumentation, Department of Chemistry, Center for Synthetic and Systems Biology, Tsinghua University, Beijing, 100084, China
| | - Wenjuan Xu
- Department of Chemistry, Northeastern University, Shenyang, 110819, China
| | - Xinyue Zhang
- Department of Chemistry, Northeastern University, Shenyang, 110819, China
| | - Zejun Sun
- Department of Chemistry, Northeastern University, Shenyang, 110819, China
| | - Liutao Guo
- Department of Chemistry, Northeastern University, Shenyang, 110819, China
| | - Rongxiu Guo
- Department of Chemistry, Northeastern University, Shenyang, 110819, China
| | - Yao Wang
- Department of Chemistry, Northeastern University, Shenyang, 110819, China
| | - Kelong Ding
- Department of Chemistry, Northeastern University, Shenyang, 110819, China
| | - Hong-Bin Sun
- Department of Chemistry, Northeastern University, Shenyang, 110819, China
| | - Jianshe Hu
- Department of Chemistry, Northeastern University, Shenyang, 110819, China
| | - Qionglin Liang
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Beijing Key Lab of Microanalytical Methods & Instrumentation, Department of Chemistry, Center for Synthetic and Systems Biology, Tsinghua University, Beijing, 100084, China
| | - Yang Yang
- NanoScience Technology Center, Department of Materials Science and Engineering, Renewable Energy and Chemical Transformation Cluster, Department of Chemistry, University of Central Florida, Orlando, FL, 32826, USA
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9
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Kanade SC, Ambalkar AA, Sethi YA, Thotiyl MO, Kale BB, Gambhire AB. A Nanostructured Mo
2
C‐rGO Heterostructure as a stable Anode with ultra‐high capacity for Lithium‐Ion Battery**. ChemistrySelect 2022. [DOI: 10.1002/slct.202104252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sandeep C. Kanade
- Department of Chemistry New Arts Commerce and Science College Laltaki road Ahmednagar 414001 affiliated to University of Pune. mAharashtra India
- Nanocrystalline Laboratory Centre for Material for Electronic Technology (CMET),Ministry of Electronics and Information Technology, Govt. of India Panchawati, Pashan Road Pune 411008
| | - Anuradha A. Ambalkar
- Nanocrystalline Laboratory Centre for Material for Electronic Technology (CMET),Ministry of Electronics and Information Technology, Govt. of India Panchawati, Pashan Road Pune 411008
| | - Yogesh A. Sethi
- Nanocrystalline Laboratory Centre for Material for Electronic Technology (CMET),Ministry of Electronics and Information Technology, Govt. of India Panchawati, Pashan Road Pune 411008
| | - Musthafa Ottakam Thotiyl
- Department of Chemistry and Centre for Energy Science Indian Institute of Science Education and Research Dr.Homi Bhabha Road Pune 411008 India
| | - Bharat B. Kale
- Nanocrystalline Laboratory Centre for Material for Electronic Technology (CMET),Ministry of Electronics and Information Technology, Govt. of India Panchawati, Pashan Road Pune 411008
| | - Anil B. Gambhire
- Department of Chemistry Shri Anand College Pathardi 414102 Maharashtra India
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10
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Mandal BP, Halankar KK, Nigam S, Majumder C, Tyagi AK. Nanocomposite of rGO wrapped Mo2C: An anode material with enhanced sodium storage capacity. ChemElectroChem 2022. [DOI: 10.1002/celc.202101506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | - Sandeep Nigam
- Bhabha Atomic Research Centre Chemistry Division INDIA
| | - C Majumder
- Bhabha Atomic Research Centre Chemistry Division INDIA
| | - Avesh K Tyagi
- Bhabha Atomic Research Centre Chemistry Division INDIA
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11
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Hierarchical Mo 2C@CNT Hybrid Structure Formation for the Improved Lithium-Ion Battery Storage Performance. NANOMATERIALS 2021; 11:nano11092195. [PMID: 34578511 PMCID: PMC8470648 DOI: 10.3390/nano11092195] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 08/22/2021] [Accepted: 08/24/2021] [Indexed: 11/17/2022]
Abstract
2-D transition metal carbides (TMCs)-based anode materials offer competitive performance in lithium-ion batteries (LIBs) owing to its excellent conductivity; cheaper, flexible uses; and superior mechanical stability. However, the electrochemical energy storage of TMCs is still the major obstacle due to their modest capacity and the trends of restacking/aggregation. In this report, the Mo2C nanosheets were attached on conductive CNT network to form a hierarchical 2D hybrid structure, which not only alleviated the aggregation of the Mo2C nanoparticle and facilitated the rapid transference of ion/electron, but also adapted effectually to the hefty volume expansion of Mo2C nanosheets and prevented restacking/collapse of Mo2C structure. Benefitting from the layered Mo2@CNT hybrid structure, the charge/discharge profile produced a 200 mAh g−1 discharge-specific capacity (second cycle) and 132 mAh g−1 reversible-discharge discharge-specific capacity (after 100 cycles) at 50 mA g−1 current density, with high-speed competency and superior cycle stability. The improved storage kinetics for Mo2@CNT hybrid structure are credited to the creation of numerous active catalytic facets and association reaction between the CNT and Mo2C, promoting the efficient electron transfer and enhancing the cycling stability.
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12
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Liu S, Shang S, Lv R, Wang Y, Wang J, Ren W, Wang Y. Molybdenum Carbide Buried in D-Shaped Fibers as a Novel Saturable Absorber Device for Ultrafast Photonics Applications. ACS APPLIED MATERIALS & INTERFACES 2021; 13:19128-19137. [PMID: 33847490 DOI: 10.1021/acsami.1c01345] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Study of nonlinear laser-matter interactions in 2D materials has promoted development of photonics applications. As a typical MXene material, molybdenum carbide (Mo2C) has attracted much attention because of its graphene-like structure. Here, a type of D-shaped fiber (DF)-buried Mo2C saturable absorber (SA) fabricated by magnetron-sputtering deposition (MSD) and sol-gel technique is reported. The Mo2C material was buried between the bottom DF and the upper amorphous silica fabricated by sol-gel technology. Therefore, the DF-based SA effectively solves the problem of material shedding and aging, thus improving the stability and damage threshold of the fiber laser. Application of the SA in erbium-doped fiber laser and stable passive Q-switched operation with a maximum pulse energy of 430.47 nJ is realized. By adjusting the polarization state and pump power, high-power mode-locked pulses are generated with a pulse duration and output power of 199 fs and 54.13 mW, respectively. Further, bound-state soliton pulses are obtained with a pulse width of 312 fs and soliton interval of 1.26 ps for the first time based on MXene materials. Moreover, by application of the SA in ytterbium-doped fiber lasers, a stable dissipative soliton mode-locked pulse is obtained with a pulse width of 23 ps. These results indicate that the DF-based buried Mo2C as a novel SA provides a reliable method for all-fiber and multifunctional high-power ultrafast laser.
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Affiliation(s)
- Sicong Liu
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, China
| | - Shiguang Shang
- School of Science, Xi'an Institute of Posts and Telecommunications, Xi'an 710121, China
| | - Ruidong Lv
- School of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yonggang Wang
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, China
- State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China
| | - Jiang Wang
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, China
| | - Wei Ren
- School of Science, Xi'an Institute of Posts and Telecommunications, Xi'an 710121, China
| | - Yishan Wang
- State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China
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13
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Design of kinetic well-matched Mo2C nanoparticles anchored into 3D hierarchical porous carbon towards high-rate sodium ion storage. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.137860] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Preparation and characterization of bulk MoXC catalysts and their use in the reverse water-gas shift reaction. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.11.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Jin R, Liu J, Qiu H, Xu C, Weng L, Liu C, Zeng Y. Synthesis of porous nanosheet-assembled ZnFe2O4@polypyrrole yolk-shell microspheres as anode materials for high-rate lithium-ion batteries. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114038] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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16
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Chu K, Li Z, Xu S, Yao G, Xu Y, Niu P, Zheng F. MOF-derived hollow NiCo 2O 4 nanowires as stable Li-ion battery anodes. Dalton Trans 2020; 49:10808-10815. [PMID: 32700699 DOI: 10.1039/d0dt00553c] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Although binary metal oxides with high theoretical specific capacities and power densities are widely investigated as promising anode materials for lithium-ion batteries (LIBs), their poor cycling stability and huge volume expansion largely limit their extensive application in practical electrode materials. Herein, we report a facile strategy to synthesize hollow NiCo2O4 nanowires through direct calcination of binary metal-organic frameworks (MOFs) in air. When evaluated as an anode material for LIBs, NiCo2O4 nanowires deliver a reversible capacity of 1310 mA h g-1 at a current density of 100 mA g-1 after 100 cycles. Even at a high current density of 1 A g-1, NiCo2O4 nanowires exhibit long-term cycling stability with a capacity of 720 mA h g-1 after 1000 cycles. The outstanding lithium-storage performance can be attributed to the unique structures with 1D porous channels, which are beneficial for the fast transfer of Li+ ions and electrolyte and alleviate the strain caused by the volume expansion during cycling processes.
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Affiliation(s)
- Kainian Chu
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University, Ministry of Education, Hefei, Anhui 230601, People's Republic of China. and Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, People's Republic of China
| | - Zhiqiang Li
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University, Ministry of Education, Hefei, Anhui 230601, People's Republic of China. and Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, People's Republic of China
| | - Shikai Xu
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University, Ministry of Education, Hefei, Anhui 230601, People's Republic of China. and Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, People's Republic of China
| | - Ge Yao
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University, Ministry of Education, Hefei, Anhui 230601, People's Republic of China. and Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, People's Republic of China
| | - Yang Xu
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University, Ministry of Education, Hefei, Anhui 230601, People's Republic of China. and Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, People's Republic of China
| | - Ping Niu
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University, Ministry of Education, Hefei, Anhui 230601, People's Republic of China. and Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, People's Republic of China
| | - Fangcai Zheng
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University, Ministry of Education, Hefei, Anhui 230601, People's Republic of China. and Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, People's Republic of China
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17
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Co-modified MoO2 nanoparticles highly dispersed on N-doped carbon nanorods as anode electrocatalyst of microbial fuel cells. Biosens Bioelectron 2019; 145:111727. [DOI: 10.1016/j.bios.2019.111727] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 09/19/2019] [Accepted: 09/20/2019] [Indexed: 12/29/2022]
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18
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Cuan J, Zhang F, Zheng Y, Zhou T, Liang G, Guo Z, Pang WK, Yu X. Heterocarbides Reinforced Electrochemical Energy Storage. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1903652. [PMID: 31529600 DOI: 10.1002/smll.201903652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 08/28/2019] [Indexed: 06/10/2023]
Abstract
The feasibility of transition metal carbides (TMCs) as promising high-rate electrodes is still hindered by low specific capacity and sluggish charge transfer kinetics. Improving charge transport kinetics motivates research toward directions that would rely on heterostructures. In particular, heterocomposing with carbon-rich TMCs is highly promising for enhancing Li storage. However, due to limited synthesis methods to prepare carbon-rich TMCs, understanding the interfacial interaction effect on the high-rate performance of TMCs is often neglected. In this work, a novel strategy is proposed to construct a binary carbide heteroelectrode, i.e. incorporating the carbon-rich TMC (M=Mo) with its metal-rich TMC nanowires (nws) via an ingenious in situ disproportionation reaction. Results show that the as-prepared MoC-Mo2 C-heteronanowires (hnws) electrode could fully recover its capacity after high-rates testing, and also possesses better lithium accommodation performance. Kinetic analysis verified that both electron and ion transfer in MoC-Mo2 C-hnws are superior to those of its singular counterparts. Such improvements suggest that by taking utilization of the interfacial component interactions of stoichiometry tunable heterocarbides, the electrochemical performance, especially high-rate capability of carbides, could be significantly enhanced.
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Affiliation(s)
- Jing Cuan
- Department of Materials Science, Fudan University, Shanghai, 200433, China
| | - Fan Zhang
- Department of Materials Science, Fudan University, Shanghai, 200433, China
| | - Yang Zheng
- Institute for Superconducting and Electronic Materials, School of Mechanical, Materials and Mechatronics Engineering, University of Wollongong, Wollongong, 2511, NSW, Australia
- Institute for Advanced Materials and Nanotechnology, The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China
| | - Tengfei Zhou
- Institute for Superconducting and Electronic Materials, School of Mechanical, Materials and Mechatronics Engineering, University of Wollongong, Wollongong, 2511, NSW, Australia
- College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan, 430074, China
| | - Gemeng Liang
- Institute for Superconducting and Electronic Materials, School of Mechanical, Materials and Mechatronics Engineering, University of Wollongong, Wollongong, 2511, NSW, Australia
| | - Zaiping Guo
- Institute for Superconducting and Electronic Materials, School of Mechanical, Materials and Mechatronics Engineering, University of Wollongong, Wollongong, 2511, NSW, Australia
- School of Mechanical, Materials and Mechatronics Engineering, University of Wollongong, Wollongong, 2511, NSW, Australia
| | - Wei Kong Pang
- Institute for Superconducting and Electronic Materials, School of Mechanical, Materials and Mechatronics Engineering, University of Wollongong, Wollongong, 2511, NSW, Australia
| | - Xuebin Yu
- Department of Materials Science, Fudan University, Shanghai, 200433, China
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19
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Multi-channel-contained few-layered MoSe2 nanosheet/N-doped carbon hybrid nanofibers prepared using diethylenetriamine as anodes for high-performance sodium-ion batteries. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.03.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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20
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Lin J, Xu J, Zhao W, Dong W, Li R, Zhang Z, Huang F. In Situ Synthesis of MoC 1- x Nanodot@Carbon Hybrids for Capacitive Lithium-Ion Storage. ACS APPLIED MATERIALS & INTERFACES 2019; 11:19977-19985. [PMID: 31070350 DOI: 10.1021/acsami.9b03230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this study, in situ synthesis of carbon-coated MoC1- x nanodots anchored on nitrogen-doped carbon (MoC1- x@C) for lithium storage is reported. The obtained MoC1- x@C hybrids exhibit intriguing structural characteristics including ultrafine particle size (ca. 1.2 nm) of MoC1- x nanodots, porous structure of nitrogen-doped carbon matrix, and good robustness. When evaluated as anodes for lithium-ion batteries, the optimized MoC1- x@C sample demonstrates a superior specific capacity (1099.2 mA h g-1 at 0.1 A g-1) and good rate capability (369.1 mA h g-1 at 5 A g-1). The MoC1- x@C anode also presents remarkable cycling stability with a much higher specific capacity (657.9 mA h g-1) than that of commercial bulk MoC (91.4 mA h g-1) after 500 cycles at 1 A g-1. Kinetics analysis of the anodes reveals the charge storage mechanism, which demonstrates the existence of capacitive redox reactions occurring at the shallow surface of the MoC1- x nanodots and closely relating to the particle size. The outstanding electrochemical performance results from the synergistic effect of the elastic carbonaceous encapsulation to accommodate the huge volume expansion and the ultrafine MoC1- x nanodots to provide more reactive sites for capacitive lithium storage.
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Affiliation(s)
- Jie Lin
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Jijian Xu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050 , P. R. China
| | - Wei Zhao
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050 , P. R. China
| | - Wujie Dong
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050 , P. R. China
- State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , P. R. China
| | - Ruizhe Li
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Zhichao Zhang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050 , P. R. China
| | - Fuqiang Huang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050 , P. R. China
- State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , P. R. China
- Suzhou Research Institute , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Taicang 215400 , Jiangsu , P. R. China
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21
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Gao C, Meng T, Yang P, Guo W, Cao M. Achieving High-Temperature Stability of Metastable α-MoC 1-x by Suppressing Phase Transformation with Mounted Atoms for Lithium Storage Performance. Chem Asian J 2019; 14:1977-1984. [PMID: 30920133 DOI: 10.1002/asia.201900312] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 03/26/2019] [Indexed: 11/08/2022]
Abstract
Despite a significant advancement in preparing metastable materials, one common problem is the strict and precious reaction conditions due to their metastable structures. Herein, we achieved the preparation of high-temperature stabilized metastable α-MoC1-x by mounting zinc atoms into its lattice structure. Such a structural construction could suppress the phase transformation from α-MoC1-x to β-Mo2 C through restricting the displacement of Mo atoms upon increased temperature. The resultant metastable α-MoC1-x can be stabilized up to 1000 °C and this stability temperature is the highest for the metastable α-MoC1-x so far. Synchrotron X-ray absorption spectroscopy (XAS) and X-ray photoelectron spectroscopy (XPS) confirm the structure of Zn-mounted α-MoC1-x . Density functional theory (DFT) calculations reveal that the introduction of the Zn atoms in the lattice structure of α-MoC1-x could significantly decrease the energy difference (ΔE) between α-MoC1-x and β-Mo2 C, thus effectively suppressing the phase transformation from α-MoC1-x to β-Mo2 C and accordingly maintaining the high-temperature stability of α-MoC1-x . This novel strategy can be used as a universal method to be extended to synthesize metastable α-MoC1-x from different precursors or other mounted elements. Moreover, the optimal product exhibits excellent lithium storage performances in terms of the cycling stability and rate performance.
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Affiliation(s)
- Cheng Gao
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Tao Meng
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Pei Yang
- Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Physics, Beijing Institute of Technology, Beijing, 100081, P. R. China.,Chinese Academy of Engineering Physics, Mianyang, 621900, P. R. China
| | - Wei Guo
- Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Physics, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Minhua Cao
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
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22
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Huang M, Zeng W, Zhu Z. Facile synthesis of porous Mo 2C/C composites by using luffa sponge-derived carbon template in molten salt media. ROYAL SOCIETY OPEN SCIENCE 2019; 6:190547. [PMID: 31312503 PMCID: PMC6599802 DOI: 10.1098/rsos.190547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Accepted: 05/22/2019] [Indexed: 06/10/2023]
Abstract
Herein, we report the synthesis of a new type of porous Mo2C/C composite by using luffa sponge-derived carbon template and ammonium molybdate ((NH4)6Mo7O24•4H2O) in molten NaCl-KCl salt media. The product exhibits a higher specific surface area and three-dimensional porous structure, including macrochannels, micropores and mesopores. The desirable porous structure results from the carbon template structure and Mo2C coating formed.
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Affiliation(s)
- Minzhong Huang
- Advanced Materials Lab., College of Materials, Xiamen University, No. 422 Siming South Road, Xiamen, Fujian 361005, People's Republic of China
| | - Wanyi Zeng
- Institute of Urban Environment, Chinese Academy of Sciences, No. 1799 Jimei Road, Xiamen, Fujian 361021, People's Republic of China
| | - Ziwen Zhu
- Advanced Materials Lab., College of Materials, Xiamen University, No. 422 Siming South Road, Xiamen, Fujian 361005, People's Republic of China
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23
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Synthesis of ultralong ZnFe2O4@polypyrrole nanowires with enhanced electrochemical Li-storage behaviors for lithium-ion batteries. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.03.121] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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24
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Dai W, Lu H, Yang F, Dong H, Zhang X. Accurate detection of intracellular microRNAs using functional Mo2C quantum dots nanoprobe. Chem Commun (Camb) 2019; 55:10615-10618. [DOI: 10.1039/c9cc04261j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A functionalized Mo2C quantum dots nanoprobe was developed for accurate detection of intracellular mature microRNAs.
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Affiliation(s)
- Wenhao Dai
- Research Center for Bioengineering and Sensing Technology
- School of Chemistry and Bioengineering
- University of Science & Technology Beijing
- Beijing 100083
- P. R. China
| | - Huiting Lu
- School of Chemistry & Biological Engineering University of Science & Technology Beijing
- Beijing 100083
- P. R. China
| | - Fan Yang
- Research Center for Bioengineering and Sensing Technology
- School of Chemistry and Bioengineering
- University of Science & Technology Beijing
- Beijing 100083
- P. R. China
| | - Haifeng Dong
- Research Center for Bioengineering and Sensing Technology
- School of Chemistry and Bioengineering
- University of Science & Technology Beijing
- Beijing 100083
- P. R. China
| | - Xueji Zhang
- Research Center for Bioengineering and Sensing Technology
- School of Chemistry and Bioengineering
- University of Science & Technology Beijing
- Beijing 100083
- P. R. China
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25
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Xia K, Guo J, Xuan C, Huang T, Deng Z, Chen L, Wang D. Ultrafine molybdenum carbide nanoparticles supported on nitrogen doped carbon nanosheets for hydrogen evolution reaction. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.05.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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26
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Dai S, Quan B, Zhang B, Liang X, Ji G. Constructing multi-interface Mo 2C/Co@C nanorods for a microwave response based on a double attenuation mechanism. Dalton Trans 2018; 47:14767-14773. [PMID: 30294732 DOI: 10.1039/c8dt03282c] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
In this work, novel one-dimensional (1D) Mo2C/Co@C nanorods (MCRs), using a metal-organic framework (zeolitic imidazolate framework; ZIF-67) as the coating layer to form multi-interfaces, were formed via a facile hard template method. Compared with previous works relating to porous-carbon-based Mo2C nanocomposites, the well-designed MCRs in this study possess a double attenuation mechanism due to the existence of the dielectric materials Mo2C and remaining carbon (RC) and the magnetic compound Co. Thanks to a new design and the multiple useful compounds, the as-prepared MCRs have the features of demonstrating multi-interfacial polarization, a large surface area and highly isotropic dissipation. Hence, the samples not only inherit the excellent microwave absorbing abilities of Mo2C but they also have a broadened effective bandwidth. For example, the minimum reflection loss (RL) value of MCRs with 35% sample loading could reach -47.98 dB. More importantly, RL values of less than -10 dB can be observed from 11.08 to 17.08 GHz (an effective bandwidth of 6.0 GHz) with a matching thickness of 1.6 mm, which is much better than previous work involving porous-carbon-based Mo2C nanocomposites. Firstly, we have reasonably redesigned the samples to have good absorbing properties for practical applications. Secondly, we have paved a highly efficient and universal way to synthesize 1D microwave absorbers with multiple valuable interfaces.
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Affiliation(s)
- Sisi Dai
- School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, P. R. China.
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27
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Highly dispersed polydopamine-modified Mo2C/MoO2 nanoparticles as anode electrocatalyst for microbial fuel cells. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.06.192] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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28
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Meng T, Cao M. Transition Metal Carbide Complex Architectures for Energy‐Related Applications. Chemistry 2018; 24:16716-16736. [DOI: 10.1002/chem.201801912] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Tao Meng
- Key Laboratory of Cluster Science Ministry of Education of China Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion, Materials School of Chemistry and Chemical Engineering, Beijing Institute of Technology Beijing 100081 P. R. China
| | - Minhua Cao
- Key Laboratory of Cluster Science Ministry of Education of China Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion, Materials School of Chemistry and Chemical Engineering, Beijing Institute of Technology Beijing 100081 P. R. China
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29
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Razaq R, Sun D, Xin Y, Li Q, Huang T, Zheng L, Zhang Z, Huang Y. Enhanced kinetics of polysulfide redox reactions on Mo 2C/CNT in lithium-sulfur batteries. NANOTECHNOLOGY 2018; 29:295401. [PMID: 29697050 DOI: 10.1088/1361-6528/aac060] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Among different energy storage devices, the lithium-sulfur (Li-S) battery is the subject of recent attention. However, the capacity decay caused by polysulfide shuttle leading to sluggish kinetics of polysulfide redox reactions is the main hindrance for its practical application in Li-S batteries. Herein, molybdenum carbide nanoparticles anchored on carbon nanotubes (Mo2C/CNT) are reported to serve as an efficient cathode material to enhance the electrochemical kinetics of polysulfide conversion in Li-S batteries. Mo2C/CNT shows strong adsorption and activation of polar polysulfides and therefore accelerates the redox kinetics of polysulfides, reduces the energy barrier, effectively mitigates the polarization and polysulfide shuttle, thus improving the electrochemical performance. The S-Mo2C/CNT composite with 70 wt% sulfur loading exhibits high specific discharge capacity (1206 mA h g-1 at 0.5 C), excellent high-rate performance, long cycle life (900 cycles), and outstanding Coulombic efficiency (∼100%) at a high rate (2 C) corresponding to a capacity decay of only 0.05%. Remarkably, the S-Mo2C/CNT cathode with high areal sulfur loading of 2.5 mg cm-2 exhibits high-rate capacities and stable cycling performance over 100 cycles, offering the potential for use in high energy Li-S batteries.
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Affiliation(s)
- Rameez Razaq
- School of Chemistry and Chemical Engineering, Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, University of Jinan, Jinan 250022, People's Republic of China
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30
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Deng M, Qi J, Li X, Xiao Y, Yang L, Yu X, Wang H, Yuan B, Gao Q. MoC/C nanowires as high-rate and long cyclic life anode for lithium ion batteries. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.04.185] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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31
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Dai S, Cheng Y, Quan B, Liang X, Liu W, Yang Z, Ji G, Du Y. Porous-carbon-based Mo 2C nanocomposites as excellent microwave absorber: a new exploration. NANOSCALE 2018; 10:6945-6953. [PMID: 29595844 DOI: 10.1039/c8nr01244j] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this study, we report a porous-carbon-based Mo2C nanocomposite (NCs) as the microwave absorber via typical carbothermal reduction using metal-organic frameworks (MOFs) and polyoxometalates (POMs) as the precursors, which have been rarely applied in electromagnetic (EM) wave absorption areas. The elaborately designed NCs not only bring about good impedance matching, but also possess strong dissipation ability due to the large surface areas and porous features. Thanks to the material characteristics as well as structural advantages, the as-prepared Mo2C/C NCs with 20 wt% sample loading exhibit remarkable microwave absorbing performance. The minimum RL value reaches -49.19 dB at matching thickness of 2.6 mm, and the best effective bandwidth (RL < -10 dB) of 4.56 GHz at 1.70 mm was also achieved. Moreover, the NCs overcome the intrinsic drawback of traditional carbon materials, that is, centralized effective absorption always occurred at high frequency (>10 GHz) and the minimum RL value of the NCs shifted to 9.04 GHz. Clearly, in this study, we not only developed the Mo2C NC as the new light absorber, but also paved the way to synthesize other available transition metal carbides using MOFs and POMs.
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Affiliation(s)
- Sisi Dai
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, P. R. China.
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32
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Yang ZD, Chang ZW, Zhang Q, Huang K, Zhang XB. Decorating carbon nanofibers with Mo 2C nanoparticles towards hierarchically porous and highly catalytic cathode for high-performance Li-O 2 batteries. Sci Bull (Beijing) 2018; 63:433-440. [PMID: 36658938 DOI: 10.1016/j.scib.2018.02.014] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 02/07/2018] [Accepted: 02/07/2018] [Indexed: 01/21/2023]
Abstract
A facile synthesis of the hierarchically porous cathode with Mo2C nanoparticles through the electrospinning technique and heat treatment is proposed. The carbonization temperature of the precursors is the key factor for the formation of Mo2C nanoparticles on the carbon nanofibers (MCNFs). Compared with the Mo2N nanoparticles embedded into N-doped carbon nanofibers film (MNNFs) and N-doped carbon nanofibers film (NFs), the battery with MCNFs cathode is capable of operation with a high-capacity (10,509 mAh g-1 at 100 mA g-1), a much reduced discharge-charge voltage gap, and a long-term life (124 cycles at 200 mA g-1 with a specific capacity limit of 500 mAh g-1). These excellent performances are derived from the synergy of the following advantageous factors: (1) the hierarchically self-standing and binder-free structure of MCNFs could ensure the high diffusion flux of Li+ and O2 as well as avoid clogging of the discharge product, bulk Li2O2; (2) the well dispersed Mo2C nanoparticles not only afford rich active sites, but also facilitate the electronic transfer for catalysis.
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Affiliation(s)
- Zhen-Dong Yang
- Key Laboratory of Automobile Materials, Ministry of Education, Department of Materials Science and Engineering, Jilin University, Changchun 130022, China; State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Zhi-Wen Chang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Qi Zhang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; Hunan Key Laboratory for Micro-Nano Energy Materials and Device, Xiangtan University, Xiangtan 411105, China
| | - Keke Huang
- State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University, Changchun 130022, China.
| | - Xin-Bo Zhang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
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33
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Wu C, Liu D, Li H, Li J. Molybdenum Carbide-Decorated Metallic Cobalt@Nitrogen-Doped Carbon Polyhedrons for Enhanced Electrocatalytic Hydrogen Evolution. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1704227. [PMID: 29571215 DOI: 10.1002/smll.201704227] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 02/04/2018] [Indexed: 06/08/2023]
Abstract
Electrocatalytic hydrogen evolution reaction (HER) based on water splitting holds great promise for clean energy technologies, in which the key issue is exploring cost-effective materials to replace noble metal catalysts. Here, a sequential chemical etching and pyrolysis strategy are developed to prepare molybdenum carbide-decorated metallic cobalt@nitrogen-doped porous carbon polyhedrons (denoted as Mo/Co@N-C) hybrids for enhanced electrocatalytic hydrogen evolution. The obtained metallic Co nanoparticles are coated by N-doped carbon thin layers while the formed molybdenum carbide nanoparticles are well-dispersed in the whole Co@N-C frames. Benefiting from the additionally implanted molybdenum carbide active sites, the HER performance of Mo/Co@N-C hybrids is significantly promoted compared with the single Co@N-C that is derived from the pristine ZIF-67 both in alkaline and acidic media. As a result, the as-synthesized Mo/Co@N-C hybrids exhibit superior HER electrocatalytic activity, and only very low overpotentials of 157 and 187 mV are needed at 10 mA cm-2 in 1 m KOH and 0.5 m H2 SO4 , respectively, opening a door for rational design and fabrication of novel low-cost electrocatalysts with hierarchical structures toward electrochemical energy storage and conversion.
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Affiliation(s)
- Can Wu
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing, 100084, China
- Faculty of Materials Science & Engineering, Hubei University, Wuhan, 430062, China
| | - Dan Liu
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing, 100084, China
| | - Hui Li
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing, 100084, China
| | - Jinghong Li
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing, 100084, China
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Zhang W, Guo Z, Liang Q, Lv R, Shen W, Kang F, Weng Y, Huang ZH. Flexible C–Mo2C fiber film with self-fused junctions as a long cyclability anode material for sodium-ion battery. RSC Adv 2018; 8:16657-16662. [PMID: 35540498 PMCID: PMC9080317 DOI: 10.1039/c8ra01908h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Accepted: 04/09/2018] [Indexed: 11/21/2022] Open
Abstract
Fiber junctions were fused by introducing MoO2, that eliminates the contact resistance at fiber junctions, and significantly improves the cyclability.
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Affiliation(s)
- Wenjie Zhang
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Zeyu Guo
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Qinghua Liang
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Ruitao Lv
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Wanci Shen
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Feiyu Kang
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Yuqing Weng
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Zheng-Hong Huang
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- P. R. China
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35
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Kang JS, Kim J, Lee MJ, Son YJ, Chung DY, Park S, Jeong J, Yoo JM, Shin H, Choe H, Park HS, Sung Y. Electrochemically Synthesized Nanoporous Molybdenum Carbide as a Durable Electrocatalyst for Hydrogen Evolution Reaction. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1700601. [PMID: 29375978 PMCID: PMC5770677 DOI: 10.1002/advs.201700601] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Revised: 10/20/2017] [Indexed: 05/04/2023]
Abstract
Demands for sustainable production of hydrogen are rapidly increasing because of environmental considerations for fossil fuel consumption and development of fuel cell technologies. Thus, the development of high-performance and economical catalysts has been extensively investigated. In this study, a nanoporous Mo carbide electrode is prepared using a top-down electrochemical process and it is applied as an electrocatalyst for the hydrogen evolution reaction (HER). Anodic oxidation of Mo foil followed by heat treatment in a carbon monoxide (CO) atmosphere forms a nanostructured Mo carbide with excellent interconnections, and these structural characteristics lead to high activity and durability when applied to the HER. Additionally, characteristic behavior of Mo is observed; metallic Mo nanosheets form during electrochemical anodization by exfoliation along the (110) planes. These nanosheets are viable for chemical modification, indicating their feasibility in various applications. Moreover, the role of carbon shells is investigated on the surface of the electrocatalysts, whereby it is suggested that carbon shells serve as a mechanical barrier against the oxidative degradation of catalysts that accompanies unavoidable volume expansion.
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Affiliation(s)
- Jin Soo Kang
- Center for Nanoparticle ResearchInstitute for Basic ScienceSeoul08826Republic of Korea
- School of Chemical and Biological EngineeringSeoul National UniversitySeoul08826Republic of Korea
| | - Jin Kim
- Center for Nanoparticle ResearchInstitute for Basic ScienceSeoul08826Republic of Korea
- School of Chemical and Biological EngineeringSeoul National UniversitySeoul08826Republic of Korea
| | - Myeong Jae Lee
- Center for Nanoparticle ResearchInstitute for Basic ScienceSeoul08826Republic of Korea
- School of Chemical and Biological EngineeringSeoul National UniversitySeoul08826Republic of Korea
| | - Yoon Jun Son
- Center for Nanoparticle ResearchInstitute for Basic ScienceSeoul08826Republic of Korea
- School of Chemical and Biological EngineeringSeoul National UniversitySeoul08826Republic of Korea
| | - Dong Young Chung
- Center for Nanoparticle ResearchInstitute for Basic ScienceSeoul08826Republic of Korea
- School of Chemical and Biological EngineeringSeoul National UniversitySeoul08826Republic of Korea
| | - Subin Park
- Center for Nanoparticle ResearchInstitute for Basic ScienceSeoul08826Republic of Korea
- School of Chemical and Biological EngineeringSeoul National UniversitySeoul08826Republic of Korea
| | - Juwon Jeong
- Center for Nanoparticle ResearchInstitute for Basic ScienceSeoul08826Republic of Korea
- School of Chemical and Biological EngineeringSeoul National UniversitySeoul08826Republic of Korea
| | - Ji Mun Yoo
- Center for Nanoparticle ResearchInstitute for Basic ScienceSeoul08826Republic of Korea
- School of Chemical and Biological EngineeringSeoul National UniversitySeoul08826Republic of Korea
| | - Heejong Shin
- Center for Nanoparticle ResearchInstitute for Basic ScienceSeoul08826Republic of Korea
- School of Chemical and Biological EngineeringSeoul National UniversitySeoul08826Republic of Korea
| | - Heeman Choe
- School of Advanced Materials EngineeringKookmin UniversitySeoul02707Republic of Korea
| | - Hyun S. Park
- Fuel Cell Research CenterKorea Institute of Science and Technology (KIST)Seoul02792Republic of Korea
| | - Yung‐Eun Sung
- Center for Nanoparticle ResearchInstitute for Basic ScienceSeoul08826Republic of Korea
- School of Chemical and Biological EngineeringSeoul National UniversitySeoul08826Republic of Korea
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36
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Liu X, Kunkel C, Ramírez de la Piscina P, Homs N, Viñes F, Illas F. Effective and Highly Selective CO Generation from CO2 Using a Polycrystalline α-Mo2C Catalyst. ACS Catal 2017. [DOI: 10.1021/acscatal.7b00735] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Xianyun Liu
- Departament de Química Inorgànica i Orgànica, secció de Química Inorgànica, & Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
- Catalonia Institute for Energy Research (IREC), Jardins de les Dones de Negre 1, 08930 Barcelona, Spain
| | - Christian Kunkel
- Departament de Ciència de Materials i Química Fisica & Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, Martí i Franqués 1, 08028 Barcelona, Spain
| | - Pilar Ramírez de la Piscina
- Departament de Química Inorgànica i Orgànica, secció de Química Inorgànica, & Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
| | - Narcís Homs
- Departament de Química Inorgànica i Orgànica, secció de Química Inorgànica, & Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
- Catalonia Institute for Energy Research (IREC), Jardins de les Dones de Negre 1, 08930 Barcelona, Spain
| | - Francesc Viñes
- Departament de Ciència de Materials i Química Fisica & Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, Martí i Franqués 1, 08028 Barcelona, Spain
| | - Francesc Illas
- Departament de Ciència de Materials i Química Fisica & Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, Martí i Franqués 1, 08028 Barcelona, Spain
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37
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Wu Z, Lei W, Wang J, Liu R, Xia K, Xuan C, Wang D. Various Structured Molybdenum-based Nanomaterials as Advanced Anode Materials for Lithium ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2017; 9:12366-12372. [PMID: 28326766 DOI: 10.1021/acsami.6b16251] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A facile and scalable solvothermal high-temperature treatment strategy was developed to construct few-layered ultrasmall MoS2 with less than three layers. These are embedded in carbon spheres (MoS2-C) and can be used as advanced anode material for lithium ion batteries (LIBs). In the resulting architecture, the intimate contact between MoS2 surface and carbon spheres can effectively avert aggregation and volume expansion of MoS2 during the lithiation-delithiation process. Moreover, it improves the structural integrity of the electrode remarkably, while the conductive carbon spheres provide quick transport of both electrons and ions within the electrode. Benefiting from this unique structure, the resulting hybrid manifests outstanding electrochemical performance, including an excellent rate capability (1085, 885, and 510 mAh g-1 at 0.5, 2, and 5 A g-1), and a superior cycling stability at high rates (maintaining 100% of the initial capacity following 500 cycles at 0.5 A g-1). Using identical methods, molybdenum carbide and phosphide supported on carbon spheres (Mo2C-C, and MoP-C) were prepared for LIBs. As a result, MoS2-C exhibits outstanding lithium storage capacities due to its specific layered structure. This study investigates large-scale production capabilities of few-layered structure ultrasmall MoS2 for energy storage, and thoroughly compares lithium storage performance of molybdenum compounds.
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Affiliation(s)
- Zexing Wu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology), Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , Wuhan, 430074, P.R. China
| | - Wen Lei
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology), Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , Wuhan, 430074, P.R. China
| | - Jie Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology), Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , Wuhan, 430074, P.R. China
| | - Rong Liu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology), Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , Wuhan, 430074, P.R. China
| | - Kedong Xia
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology), Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , Wuhan, 430074, P.R. China
| | - Cuijuan Xuan
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology), Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , Wuhan, 430074, P.R. China
| | - Deli Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology), Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , Wuhan, 430074, P.R. China
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38
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Shi M, Zhao L, Song X, Liu J, Zhang P, Gao L. Highly Conductive Mo 2C Nanofibers Encapsulated in Ultrathin MnO 2 Nanosheets as a Self-Supported Electrode for High-Performance Capacitive Energy Storage. ACS APPLIED MATERIALS & INTERFACES 2016; 8:32460-32467. [PMID: 27808498 DOI: 10.1021/acsami.6b10637] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Nanostructured transition metal carbides (TMCs) with superior electrochemical properties are promising materials for high-efficiency energy-storage applications. Herein one-dimensional molybdenum carbide nanofibers (Mo2C NFs) have been fabricated by a facile and effective electrospinning strategy. Based on the cross-linked network architecture with ultrahigh electronic conductivity, each Mo2C NF is uniformly encapsulated in lamellar manganese dioxide (MnO2) via electrodeposition, forming a self-supported MnO2-Mo2C NF film with excellent electrochemical activity. Remarkably, the highly conductive inner layer of porous Mo2C NFs acts like a "highway" to facilitate charge transport and ionic diffusion, while the MnO2 nanosheets with abundant active area are favorable for the accumulation of effective electric charges. Benefiting from these features, the hybrid film is directly applied as the self-standing electrode of supercapacitors (SCs) without any additives, which delivers considerably large specific capacitance with strong durability in both aqueous and organic (ionic liquid) electrolytes. This work elucidates a feasible way toward heteronanofiber engineering of TMCs on a promising additive-free electrode for flexible and high-performance SCs.
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Affiliation(s)
- Minjie Shi
- State Key Laboratory for Metallic Matrix Composite Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Liping Zhao
- State Key Laboratory for Metallic Matrix Composite Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Xuefeng Song
- State Key Laboratory for Metallic Matrix Composite Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Jing Liu
- State Key Laboratory for Metallic Matrix Composite Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Peng Zhang
- State Key Laboratory for Metallic Matrix Composite Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Lian Gao
- State Key Laboratory for Metallic Matrix Composite Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
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39
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Xu M, Wang M, Xu H, Xue H, Pang H. Electrospun-Technology-Derived High-Performance Electrochemical Energy Storage Devices. Chem Asian J 2016; 11:2967-2995. [DOI: 10.1002/asia.201600809] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 07/30/2016] [Indexed: 12/22/2022]
Affiliation(s)
- Mengjiao Xu
- College of Chemistry and Chemical Engineering; Yangzhou University; Yangzhou 225002 Jiangsu P.R. China
| | - Minxuan Wang
- College of Chemistry; Sichuan University; Chengdu Sichuan 610064 P.R. China
| | - Hao Xu
- College of Chemistry and Chemical Engineering; Yangzhou University; Yangzhou 225002 Jiangsu P.R. China
| | - Huaiguo Xue
- College of Chemistry and Chemical Engineering; Yangzhou University; Yangzhou 225002 Jiangsu P.R. China
| | - Huan Pang
- College of Chemistry and Chemical Engineering; Yangzhou University; Yangzhou 225002 Jiangsu P.R. China
- College of Chemistry and Chemical Engineering; Anyang University; Anyang 455002 Henan P.R. China
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40
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Du C, Huang H, Wu Y, Wu S, Song W. Ultra-efficient electrocatalytic hydrogen evolution at one-step carbonization generated molybdenum carbide nanosheets/N-doped carbon. NANOSCALE 2016; 8:16251-16258. [PMID: 27714037 DOI: 10.1039/c6nr03657k] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The hydrogen evolution reaction (HER) from water through electrocatalysis using highly active noble metal-free catalysts as an alternative to precious Pt-based catalysts holds great promise for clean and renewable energy systems. Here, Mo2C nanosheets well-regulated in N-doped carbon (MCNS/NC)are facilely achieved by in situ confining carburization of a Mo-based inorganic-organic lamellar mesostructure at 900 °C, and demonstrated for the first time as an ultra-efficient and durable HER catalyst. The MCNS/NC displays a very low onset overpotential of ∼0 mV and an overpotential of 19 mV at 10 mA cm-2 with a small Tafel slope of 28.9 mV dec-1 in acid media, which is remarkably superior to most other transition metal-based catalysts and comparable to commercial Pt/C. The HER kinetics are further studied by EIS and Tafel slope analysis, suggesting the dominant Volmer-Tafel mechanism. An "outside-in" carburization mechanism for the evolution of MCNS/NC is proposed through detailed investigation of the samples annealed at different temperatures. This study highlights the importance of designing well-regulated functional nanostructures combined with a conductive carbonaceous matrix for versatile applications.
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Affiliation(s)
- Cuicui Du
- College of Chemistry, Jilin University, Changchun 130012, P.R. China. wbsong@ jlu.edu.cn
| | - Hao Huang
- College of Chemistry, Jilin University, Changchun 130012, P.R. China. wbsong@ jlu.edu.cn
| | - Yue Wu
- College of Chemistry, Jilin University, Changchun 130012, P.R. China. wbsong@ jlu.edu.cn
| | - Siyuan Wu
- College of Chemistry, Jilin University, Changchun 130012, P.R. China. wbsong@ jlu.edu.cn
| | - Wenbo Song
- College of Chemistry, Jilin University, Changchun 130012, P.R. China. wbsong@ jlu.edu.cn
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41
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Zhang H, Li Y, Xu Y, Lu Z, Chen L, Huang L, Fan M. Versatile fabrication of a superhydrophobic and ultralight cellulose-based aerogel for oil spillage clean-up. Phys Chem Chem Phys 2016; 18:28297-28306. [DOI: 10.1039/c6cp04932j] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To deal with marine oil spillage and chemical leakage issues, a highly efficient absorbent (cellulose based aerogel) with a low density (ρ < 0.034 g cm−3, φ > 98.5%) and high mechanical strength was fabricated via a novel physical–chemical foaming method, plasma treatment and subsequent silane modification process.
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Affiliation(s)
- Hui Zhang
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- People's Republic of China
| | - Yuqi Li
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- People's Republic of China
| | - Yaoguang Xu
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- People's Republic of China
| | - Zexiang Lu
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- People's Republic of China
| | - Lihui Chen
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- People's Republic of China
| | - Liulian Huang
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- People's Republic of China
| | - Mizi Fan
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- People's Republic of China
- Nanocellulose and Biocomposites Research Centre, College of Engineering
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