1
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Lei Y, Lin F, Hong N, Zhang J, Wang Y, Ben H, Li J, Ding L, Lv L. In Situ Construction of a Co 2P/CoP Heterojunction Embedded on N-Doped Carbon as an Efficient Electrocatalyst for a Hydrogen Evolution Reaction. MATERIALS (BASEL, SWITZERLAND) 2023; 17:87. [PMID: 38203941 PMCID: PMC10780241 DOI: 10.3390/ma17010087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 12/16/2023] [Accepted: 12/19/2023] [Indexed: 01/12/2024]
Abstract
Noble metal-free electrocatalysts have received widespread attention in a hydrogen evolution reaction (HER) due to the importance of renewable energy development. Herein, a Co2P/CoP heterojunction embedded on an N-doped carbon (Co2P/CoP/NC) electrocatalyst was prepared via an in situ pyrolysis method. The as-prepared electrocatalyst exhibited efficient electrocatalytic activity for HER in an acidic solution. The Co2P/CoP/NC catalyst displayed an overpotential of 184 mV at 10 mA cm-2 and a low Tafel slope of 82 mV dec-1, which could be attributed to the tight Co2P/CoP heterojunction and the synergetic effect of Co2P/CoP and N-doped carbon. In addition, the electrochemical active surface area of Co2P/CoP/NC was 75.2 m2 g-1, which indicated that more active regions can be applied for the HER process. This report may pave a new way for the design of efficient and low-cost N-doped-carbon-supported 3d transition metal phosphide electrocatalysts.
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Affiliation(s)
| | | | | | | | | | | | | | - Liyong Ding
- College of Chemical and Material Engineering, Quzhou University, Quzhou 324000, China; (Y.L.); (F.L.); (N.H.); (J.Z.); (Y.W.); (H.B.); (J.L.)
| | - Liang Lv
- College of Chemical and Material Engineering, Quzhou University, Quzhou 324000, China; (Y.L.); (F.L.); (N.H.); (J.Z.); (Y.W.); (H.B.); (J.L.)
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2
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Zhang X, Yang Q, Zhang L, Li J, Sun S, Yang Y, Sun Y, Sun X. Amorphous Co-Mo-P film on nickel foam: a superior bifunctional electrocatalyst for alkaline seawater splitting. NANOTECHNOLOGY 2023; 35:105702. [PMID: 38055973 DOI: 10.1088/1361-6528/ad12e6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 12/05/2023] [Indexed: 12/08/2023]
Abstract
Seawater splitting is a compelling avenue to produce abundant hydrogen, which requires high-performance and cost-effective catalysts. Constructing bimetallic transition metal phosphides is a feasible strategy to meet the challenge. Here, an amorphous Co-Mo-P film supported on nickel foam (Co-Mo-P/NF) electrode is developed with bifunctional properties for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline seawater. Corresponding results indicate that the introduction of Mo can improve the active sites and regulate the intrinsic activity. Such a Co-Mo-P/NF behaves with prominent electrocatalytic activity towards both HER and OER, demanding low overpotentials of 193 and 352 mV at 100 mA cm‒2in alkaline seawater, respectively. Furthermore, the assembled electrolyzer demands a pronounced overall seawater splitting activity with a low cell voltage of 1.76 V to deliver 100 mA cm-2presenting excellent durability without obvious attenuation after 24 h continuous stability test. This work expands the horizon to develop transition metal-phosphorus electrocatalysts with robust and efficient activity for overall seawater splitting.
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Affiliation(s)
- Xuefeng Zhang
- College of Resources and Environment, Chengdu University of Information Technology, Chengdu 610225, People's Republic of China
| | - Qin Yang
- College of Resources and Environment, Chengdu University of Information Technology, Chengdu 610225, People's Republic of China
| | - Longcheng Zhang
- Institute of Fundamental and Frontier Science, University of Electronic Science and Technology of China, Chengdu 610054, People's Republic of China
| | - Jun Li
- Institute of Fundamental and Frontier Science, University of Electronic Science and Technology of China, Chengdu 610054, People's Republic of China
| | - Shengjun Sun
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, People's Republic of China
| | - Yingchun Yang
- College of Resources and Environment, Chengdu University of Information Technology, Chengdu 610225, People's Republic of China
| | - Yuntong Sun
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, People's Republic of China
| | - Xuping Sun
- Institute of Fundamental and Frontier Science, University of Electronic Science and Technology of China, Chengdu 610054, People's Republic of China
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, People's Republic of China
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3
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Yang W, Li H, Li P, Xie L, Liu Y, Cao Z, Tian C, Wang CA, Xie Z. Facile Synthesis of Co Nanoparticles Embedded in N-Doped Carbon Nanotubes/Graphitic Nanosheets as Bifunctional Electrocatalysts for Electrocatalytic Water Splitting. Molecules 2023; 28:6709. [PMID: 37764484 PMCID: PMC10535278 DOI: 10.3390/molecules28186709] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/11/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023] Open
Abstract
Developing robust and cost-effective electrocatalysts to boost hydrogen evolution reactions (HERs) and oxygen evolution reactions (OERs) is crucially important to electrocatalytic water splitting. Herein, bifunctional electrocatalysts, by coupling Co nanoparticles and N-doped carbon nanotubes/graphitic nanosheets (Co@NCNTs/NG), were successfully synthesized via facile high-temperature pyrolysis and evaluated for water splitting. The morphology and particle size of products were influenced by the precursor type of the cobalt source (cobalt oxide or cobalt nitrate). The pyrolysis product prepared using cobalt oxide as a cobalt source (Co@NCNTs/NG-1) exhibited the smaller particle size and higher specific surface area than that of the pyrolysis products prepared using cobalt nitrate as a cobalt source (Co@NCNTs/NG-2). Notably, Co@NCNTs/NG-1 displayed much lower potential -0.222 V vs. RHE for HER and 1.547 V vs. RHE for OER at the benchmark current density of 10 mA cm-2 than that of Co@NCNTs/NG-2, which indicates the higher bifunctional catalytic activities of Co@NCNTs/NG-1. The water-splitting device using Co@NCNTs/NG-1 as both an anode and cathode demonstrated a potential of 1.92 V to attain 10 mA cm-2 with outstanding stability for 100 h. This work provides a facile pyrolysis strategy to explore highly efficient and stable bifunctional electrocatalysts for water splitting.
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Affiliation(s)
- Wei Yang
- School of Mechanical and Electronic Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China
| | - Han Li
- Institute of New Energy Materials and Devices, School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China
| | - Pengzhang Li
- Institute of New Energy Materials and Devices, School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China
| | - Linhua Xie
- Institute of New Energy Materials and Devices, School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China
| | - Yumin Liu
- Institute of New Energy Materials and Devices, School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China
| | - Zhenbao Cao
- Institute of New Energy Materials and Devices, School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China
| | - Chuanjin Tian
- Institute of New Energy Materials and Devices, School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China
| | - Chang-An Wang
- Institute of New Energy Materials and Devices, School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China
- State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Zhipeng Xie
- Institute of New Energy Materials and Devices, School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China
- State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
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4
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Tan HH, Liu X, Huang CM, Zhou J. One-Dimensional Selenidostannates Based on an Infrequent Tetrameric Cluster [Sn 4Se 12] Exhibiting Electro-Catalytic Properties. Inorg Chem 2023. [PMID: 37390501 DOI: 10.1021/acs.inorgchem.3c01538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2023]
Abstract
The discovery of low-cost and efficient electro-catalytic materials for hydrogen evolution reaction (HER) is very desirable in hydrogen energy technology. Here, a new type of one-dimensional (1-D) organic hybrid selenidostannate [Ni(en)3]n[Sn2Se5]n (SnSe-1, en = ethylenediamine) with an in situ [Ni(en)3]2+ complex was achieved by the solvothermal reaction of Sn, Se, and NiCl2·6H2O in a mixed solvent of en and triethanolamine at 160 °C for 10 days. The crystal structure of SnSe-1 contains a unique 1-D [Sn2Se52-]n chain built up from the sharing-edge connection of a hitherto-unknown tetrameric [Sn4Se12] cluster, which is separated by discrete [Ni(en)3]2+ complexes. SnSe-1 is first combined with Ni nanoparticles supported on conductive porous Ni foam (NF) to constitute a Ni/SnSe-1/NF electrode as the HER electro-catalyst, displaying superior electro-catalytic activity in near-neutral conditions.
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Affiliation(s)
- Hong-Hui Tan
- Chongqing Key Laboratory of Inorganic Functional Materials, College of Chemistry, Chongqing Normal University, Chongqing 401331, P. R. China
| | - Xing Liu
- Chongqing Key Laboratory of Inorganic Functional Materials, College of Chemistry, Chongqing Normal University, Chongqing 401331, P. R. China
| | - Chun-Mei Huang
- Chongqing Key Laboratory of Inorganic Functional Materials, College of Chemistry, Chongqing Normal University, Chongqing 401331, P. R. China
| | - Jian Zhou
- Chongqing Key Laboratory of Inorganic Functional Materials, College of Chemistry, Chongqing Normal University, Chongqing 401331, P. R. China
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5
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Zheng Y, Guo R, Li X, He T, Wang W, Zhan Q, Li R, Zhang K, Ji S, Jin M. Synthesis of amorphous trimetallic PdCuNiP nanoparticles for enhanced OER. Front Chem 2023; 11:1122333. [PMID: 36793765 PMCID: PMC9922906 DOI: 10.3389/fchem.2023.1122333] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 01/16/2023] [Indexed: 01/31/2023] Open
Abstract
Metal phosphides with multi-element components and amorphous structure represent a novel kind of electrocatalysts for promising activity and durability towards the oxygen evolution reaction (OER). In this work, a two-step strategy, including alloying and phosphating processes, is reported to synthesize trimetallic amorphous PdCuNiP phosphide nanoparticles for efficient OER under alkaline conditions. The synergistic effect between Pd, Cu, Ni, and P elements, as well as the amorphous structure of the obtained PdCuNiP phosphide nanoparticles, would boost the intrinsic catalytic activity of Pd nanoparticles towards a wide range of reactions. These obtained trimetallic amorphous PdCuNiP phosphide nanoparticles exhibit long-term stability, nearly a 20-fold increase in mass activity toward OER compared with the initial Pd nanoparticles, and 223 mV lower in overpotential at 10 mA cm-2. This work not only provides a reliable synthetic strategy for multi-metallic phosphide nanoparticles, but also expands the potential applications of this promising class of multi-metallic amorphous phosphides.
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Affiliation(s)
- Yangzi Zheng
- State Key Laboratory of Multiphase Flow in Power Engineering, Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Ruiyun Guo
- School of Materials Science and Engineering, Xi’an University of Science and Technology, Xi’an, Shaanxi, China,*Correspondence: Mingshang Jin, ; Ruiyun Guo,
| | - Xiang Li
- Shaanxi Key Laboratory of Optoelectronic Functional Materials and Devices, School of Materials Science and Chemical Engineering, Xi’an Technological University, Xi’an, Shaanxi, China
| | - Tianou He
- State Key Laboratory of Multiphase Flow in Power Engineering, Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Weicong Wang
- State Key Laboratory of Multiphase Flow in Power Engineering, Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Qi Zhan
- State Key Laboratory of Multiphase Flow in Power Engineering, Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Rui Li
- State Key Laboratory of Multiphase Flow in Power Engineering, Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Ke Zhang
- State Key Laboratory of Multiphase Flow in Power Engineering, Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Shangdong Ji
- State Key Laboratory of Multiphase Flow in Power Engineering, Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Mingshang Jin
- State Key Laboratory of Multiphase Flow in Power Engineering, Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an, Shaanxi, China,*Correspondence: Mingshang Jin, ; Ruiyun Guo,
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6
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Song XZ, Zhao YH, Zhang F, Ni JC, Zhang Z, Tan Z, Wang XF, Li Y. Coupling Plant Polyphenol Coordination Assembly with Co(OH) 2 to Enhance Electrocatalytic Performance towards Oxygen Evolution Reaction. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3972. [PMID: 36432258 PMCID: PMC9699349 DOI: 10.3390/nano12223972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/03/2022] [Accepted: 11/06/2022] [Indexed: 06/16/2023]
Abstract
The oxygen evolution reaction (OER) is kinetically sluggish due to the limitation of the four-electron transfer pathway, so it is imperative to explore advanced catalysts with a superior structure and catalytic output under facile synthetic conditions. In the present work, an easily accessible strategy was proposed to implement the plant-polyphenol-involved coordination assembly on Co(OH)2 nanosheets. A TA-Fe (TA = tannic acid) coordination assembly growing on Co(OH)2 resulted in the heterostructure of Co(OH)2@TA-Fe as an electrocatalyst for OER. It could significantly decrease the overpotential to 297 mV at a current density of 10 mA cm-2. The heterostructure Co(OH)2@TA-Fe also possessed favorable reaction kinetics with a low Tafel slope of 64.8 mV dec-1 and facilitated a charge-transfer ability. The enhanced electrocatalytic performance was further unraveled to be related to the confined growth of the coordination assembly on Co(OH)2 to expose more active sites, the modulated surface properties and their synergistic effect. This study demonstrated a simple and feasible strategy to utilize inexpensive biomass-derived substances as novel modifiers to enhance the performance of energy-conversion electrocatalysis.
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Affiliation(s)
- Xue-Zhi Song
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Yu-Hang Zhao
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Fan Zhang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Jing-Chang Ni
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Zhou Zhang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Zhenquan Tan
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Xiao-Feng Wang
- Key Laboratory of Materials Modification by Laser Ion and Electron Beams, Ministry of Education, School of Physics, Dalian University of Technology, Dalian 116024, China
| | - Yanqiang Li
- School of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, China
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7
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Chen H, Wei Y, Cao X, Yu L, Yang Q, Liu Y, Zhong L, Qiu Y. Boosting polysulfide capture and redox conversion by functional separator combined with porous hosts for advanced Li-S batteries. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116483] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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8
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Liu Y, Li J, Sun D, Men L, Sun B, Li X, An Q, Liu F, Su Z. Self-assembly of bimetallic polyoxometalates and dicyandiamide to form Co/WC@NC for efficient electrochemical hydrogen generation. NEW J CHEM 2022. [DOI: 10.1039/d1nj04573c] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Graphene carbon-coated and N-doped WC and cobalt (Co) nanoparticles (Co/WC@NC) were synthesized via a one-step straightforward high-temperature calcination. The resultant Co/WC@NC manifests excellent hydrogen evolution activity.
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Affiliation(s)
- Yan Liu
- School of Chemical and Environmental Engineering, Jilin Provincial Science and Technology Innovation Centre of Optical Materials and Chemistry, Changchun University of Science and Technology, International Joint Research Center for optical functional materials and chemistry, Changchun University of Science and Technology, Changchun, People's Republic of China
| | - Jiao Li
- School of Materials science and Engineering, Changchun University of Science and Technology, Changchun 130022, People's Republic of China
| | - Dan Sun
- School of Chemical and Environmental Engineering, Jilin Provincial Science and Technology Innovation Centre of Optical Materials and Chemistry, Changchun University of Science and Technology, International Joint Research Center for optical functional materials and chemistry, Changchun University of Science and Technology, Changchun, People's Republic of China
| | - Linglan Men
- School of Chemical and Environmental Engineering, Jilin Provincial Science and Technology Innovation Centre of Optical Materials and Chemistry, Changchun University of Science and Technology, International Joint Research Center for optical functional materials and chemistry, Changchun University of Science and Technology, Changchun, People's Republic of China
| | - Bo Sun
- School of Chemical and Environmental Engineering, Jilin Provincial Science and Technology Innovation Centre of Optical Materials and Chemistry, Changchun University of Science and Technology, International Joint Research Center for optical functional materials and chemistry, Changchun University of Science and Technology, Changchun, People's Republic of China
| | - Xiao Li
- School of Chemical and Environmental Engineering, Jilin Provincial Science and Technology Innovation Centre of Optical Materials and Chemistry, Changchun University of Science and Technology, International Joint Research Center for optical functional materials and chemistry, Changchun University of Science and Technology, Changchun, People's Republic of China
| | - Qingbo An
- School of Chemical and Environmental Engineering, Jilin Provincial Science and Technology Innovation Centre of Optical Materials and Chemistry, Changchun University of Science and Technology, International Joint Research Center for optical functional materials and chemistry, Changchun University of Science and Technology, Changchun, People's Republic of China
| | - Fangbin Liu
- School of Chemical and Environmental Engineering, Jilin Provincial Science and Technology Innovation Centre of Optical Materials and Chemistry, Changchun University of Science and Technology, International Joint Research Center for optical functional materials and chemistry, Changchun University of Science and Technology, Changchun, People's Republic of China
| | - Zhongmin Su
- School of Chemical and Environmental Engineering, Jilin Provincial Science and Technology Innovation Centre of Optical Materials and Chemistry, Changchun University of Science and Technology, International Joint Research Center for optical functional materials and chemistry, Changchun University of Science and Technology, Changchun, People's Republic of China
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9
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Sun K, Shan H, Ma R, Wang P, Neumann H, Lu GP, Beller M. Catalytic oxidative dehydrogenation of N-heterocycles with nitrogen/phosphorus co-doped porous carbon materials. Chem Sci 2022; 13:6865-6872. [PMID: 35774164 PMCID: PMC9200114 DOI: 10.1039/d2sc01838a] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 05/17/2022] [Indexed: 12/14/2022] Open
Abstract
A metal-free oxidative dehydrogenation of N-heterocycles utilizing a nitrogen/phosphorus co-doped porous carbon (NPCH) catalyst is reported. The optimal material is robust against traditional poisoning agents and shows high antioxidant resistance. It exhibits good catalytic performance for the synthesis of various quinoline, indole, isoquinoline, and quinoxaline ‘on-water’ under air atmosphere. The active sites in the NPCH catalyst are proposed to be phosphorus and nitrogen centers within the porous carbon network. Green oxidations made easy. Metal-free dehydrogenation of N-heterocycles are possible in using N,P-co-doped porous carbon materials “on” water using air.![]()
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Affiliation(s)
- Kangkang Sun
- School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Xiaolingwei 200, Nanjing 210094, P. R. China
- Leibniz-Institute for Catalysis, Albert-Einstein-Straße 29a, Rostock 18059, Germany
| | - Hongbin Shan
- School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Xiaolingwei 200, Nanjing 210094, P. R. China
| | - Rui Ma
- Leibniz-Institute for Catalysis, Albert-Einstein-Straße 29a, Rostock 18059, Germany
| | - Peng Wang
- Leibniz-Institute for Catalysis, Albert-Einstein-Straße 29a, Rostock 18059, Germany
| | - Helfried Neumann
- Leibniz-Institute for Catalysis, Albert-Einstein-Straße 29a, Rostock 18059, Germany
| | - Guo-Ping Lu
- School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Xiaolingwei 200, Nanjing 210094, P. R. China
| | - Matthias Beller
- Leibniz-Institute for Catalysis, Albert-Einstein-Straße 29a, Rostock 18059, Germany
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10
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Muthukumar P, Narasimhan S, Selvam AP, Mariappan M, Assiri MA, Anthony SP. Cobalt coordination controlled carbon nanospheres formation and inclusion of amorphous Co 3O 4 and AuNPs: strongly enhanced oxygen evolution reaction with excellent mass activity. Dalton Trans 2021; 50:10493-10500. [PMID: 34259287 DOI: 10.1039/d1dt01649k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Carbon nanospheres integrated with AuNPs and amorphous Co3O4 were fabricated by making use of cobalt coordination with AuNP surface ligands, which exhibited an enhanced oxygen evolution reaction (OER) with excellent mass activity. Co2+ coordination with AuNP surface functional molecules significantly influenced the nanostructure formation and OER activity. Nanospheres of carbon with an optimum concentration of AuNPs and Co3O4 (2) showed strong OER activity. 2 exhibited a high current density (358 mA cm-2 at an applied potential of 1.59 V) and required a low overpotential (256 mV) to generate a geometric current density (10 mA cm-2) compared to commercial RuO2 (363 mV). Importantly, 2 showed high mass activity (1352.5 mA mg-1), 14 times higher than RuO2 (93.87 mA mg-1). The low Tafel slope (52.4 mV dec-1) and charge transfer resistance along with large double layer capacitance (Cdl = 20.1) of 2 suggest strong electronic communication between the catalyst and the electrode surface and facilitated fast charge transport. Chronoamperometric studies confirmed the excellent stability of the catalyst. The present work demonstrates that the electrocatalytic activity of earth-abundant amorphous metal oxides can be strongly enhanced by integrating metallic nanoparticles (NPs) and optimizing nanostructures.
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Affiliation(s)
- Pandi Muthukumar
- Department of Chemistry, School of Chemical & Biotechnology, SASTRA Deemed University, Thanjavur-613401, Tamil Nadu, India.
| | - Shreya Narasimhan
- Department of Chemistry, School of Chemical & Biotechnology, SASTRA Deemed University, Thanjavur-613401, Tamil Nadu, India.
| | | | - Mariappan Mariappan
- Department of Chemistry, SRM IST, Kattankulathur, Chennai-603203, Tamil Nadu, India
| | - Mohammed A Assiri
- Department of Chemistry, King Khalid University, Abha 61413, Saudi Arabia
| | - Savarimuthu Philip Anthony
- Department of Chemistry, School of Chemical & Biotechnology, SASTRA Deemed University, Thanjavur-613401, Tamil Nadu, India.
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11
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Yi L, Peng X, Meng Y, Ding Y, Wang X, Lu Y. N-Doped carbon-coated Co2P-supported Au nanocomposite as the anode catalyst for borohydride electrooxidation. NEW J CHEM 2021. [DOI: 10.1039/d1nj02240g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Au(50)Co2P@NC(50)/C nanoparticle composite electrocatalyst combines the lower content of noble metal and much higher catalytic activity for BH4− electrooxidation.
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Affiliation(s)
- Lanhua Yi
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, School of Chemistry, Xiangtan University
- Xiangtan 411105
- P. R. China
| | - Xiaoqin Peng
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, School of Chemistry, Xiangtan University
- Xiangtan 411105
- P. R. China
| | - Yuan Meng
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, School of Chemistry, Xiangtan University
- Xiangtan 411105
- P. R. China
| | - Yonglan Ding
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, School of Chemistry, Xiangtan University
- Xiangtan 411105
- P. R. China
| | - Xianyou Wang
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, School of Chemistry, Xiangtan University
- Xiangtan 411105
- P. R. China
| | - Yebo Lu
- College of Information Science and Engineering, Jiaxing University
- Jiaxing 314001
- P. R. China
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12
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Sun K, Li D, Lu G, Cai C. Hydrogen Auto‐transfer Synthesis of Quinoxalines from
o
‐Nitroanilines and Biomass‐based Diols Catalyzed by MOF‐derived N,P Co‐doped Cobalt Catalysts. ChemCatChem 2020. [DOI: 10.1002/cctc.202001362] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Kangkang Sun
- School of Chemical Engineering Nanjing University of Science & Technology Xiaolingwei 200 Nanjing 210094 P. R. China
| | - Dandan Li
- School of Chemical Engineering Nanjing University of Science & Technology Xiaolingwei 200 Nanjing 210094 P. R. China
| | - Guo‐Ping Lu
- School of Chemical Engineering Nanjing University of Science & Technology Xiaolingwei 200 Nanjing 210094 P. R. China
| | - Chun Cai
- School of Chemical Engineering Nanjing University of Science & Technology Xiaolingwei 200 Nanjing 210094 P. R. China
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Lingling Lu 345 Shanghai 200032 P. R. China
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13
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Qian G, Chen J, Luo L, Zhang H, Chen W, Gao Z, Yin S, Tsiakaras P. Novel Bifunctional V 2O 3 Nanosheets Coupled with N-Doped-Carbon Encapsulated Ni Heterostructure for Enhanced Electrocatalytic Oxidation of Urea-Rich Wastewater. ACS APPLIED MATERIALS & INTERFACES 2020; 12:38061-38069. [PMID: 32846500 DOI: 10.1021/acsami.0c09319] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Developing high performance bifunctional transition metal catalysts would be significantly beneficial for electrocatalytic oxidation of urea-rich wastewater. Herein, we synthesize a V2O3 nanosheet anchored N-doped-carbon encapsulated Ni heterostructure (Ni@C-V2O3/NF) for the reactions of urea oxidation (UOR) and hydrogen evolution (HER). Electrochemical results indicate that it exhibits small potentials of 1.32, 1.39, and 1.43 V for UOR and low overpotentials of 36, 254, and 355 mV for HER at ±10, ± 500 and ±1000 mA cm-2, respectively. It can work at 100 mA cm-2 for over 72 h as cathode and anode electrode without obvious attenuation, suggesting an outstanding durability. The reason for this behavior could be ascribed to the N-doped-carbon coating structure, the synergetic effects between Ni and V2O3, and the nano/micro nanosheets architecture self-supported on nickel foam. This work could provide a promising, inexpensive, and green method for the degradation of urea-rich wastewater and hydrogen production.
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Affiliation(s)
- Guangfu Qian
- College of Chemistry and Chemical Engineering, School of Physical Science and Technology, State Key Laboratory of Processing for Non-Ferrous Metal and Featured Materials, Guangxi University, 100 Daxue Road, Nanning 530004, P. R. China
| | - Jinli Chen
- College of Chemistry and Chemical Engineering, School of Physical Science and Technology, State Key Laboratory of Processing for Non-Ferrous Metal and Featured Materials, Guangxi University, 100 Daxue Road, Nanning 530004, P. R. China
| | - Lin Luo
- College of Chemistry and Chemical Engineering, School of Physical Science and Technology, State Key Laboratory of Processing for Non-Ferrous Metal and Featured Materials, Guangxi University, 100 Daxue Road, Nanning 530004, P. R. China
| | - Hao Zhang
- College of Chemistry and Chemical Engineering, School of Physical Science and Technology, State Key Laboratory of Processing for Non-Ferrous Metal and Featured Materials, Guangxi University, 100 Daxue Road, Nanning 530004, P. R. China
| | - Wei Chen
- College of Chemistry and Chemical Engineering, School of Physical Science and Technology, State Key Laboratory of Processing for Non-Ferrous Metal and Featured Materials, Guangxi University, 100 Daxue Road, Nanning 530004, P. R. China
| | - Zhejiang Gao
- College of Chemistry and Chemical Engineering, School of Physical Science and Technology, State Key Laboratory of Processing for Non-Ferrous Metal and Featured Materials, Guangxi University, 100 Daxue Road, Nanning 530004, P. R. China
| | - Shibin Yin
- College of Chemistry and Chemical Engineering, School of Physical Science and Technology, State Key Laboratory of Processing for Non-Ferrous Metal and Featured Materials, Guangxi University, 100 Daxue Road, Nanning 530004, P. R. China
| | - Panagiotis Tsiakaras
- Laboratory of Electrochemical Devices based on Solid Oxide Proton Electrolytes, Institute of High Temperature Electrochemistry, Russian Academy of Sciences, Yekaterinburg 620990, Russia
- Laboratory of Materials and Devices for Clean Energy, Department of Technology of Electrochemical Processes, Ural Federal University, 19 Mira Street, Yekaterinburg 620002, Russia
- Laboratory of Alternative Energy Conversion Systems, Department of Mechanical Engineering, School of Engineering, University of Thessaly, 1 Sekeri Street, Pedion Areos 38834, Greece
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14
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Cui M, Wu Z, Li P, Xin L, Wang S. Fe doped Sb nanoparticles supported on heteroatoms co-doped carbon matrix as efficient electrocatalyst for hydrogen evolution reaction in both acid and alkaline media. J Taiwan Inst Chem Eng 2020. [DOI: 10.1016/j.jtice.2020.03.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Ren B, Jin Q, Li Y, Li Y, Cui H, Wang C. Activating Titanium Dioxide as a New Efficient Electrocatalyst: From Theory to Experiment. ACS APPLIED MATERIALS & INTERFACES 2020; 12:11607-11615. [PMID: 32070101 DOI: 10.1021/acsami.9b21575] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Though transition-metal-based materials have emerged as the most promising alternatives to Pt-based electrocatalysts in hydrogen evolution reaction (HER), only a few of them (Fe-, Co-, Ni-, W-, and Mo-based materials) are used as efficient HER electrocatalysts, while others are generally considered as HER-inactive materials with poor activities. Here, a theory-guided experiment is carried out to activate titanium dioxide as a new efficient HER electrocatalyst. First-principles simulations indicate that the hydrogen adsorption free energy could be optimized through tuning the structural and electronic properties of TiO2. Then Cu-doped amorphous TiO2 is successfully prepared based on the theoretical results. The activated TiO2 expectedly shows excellent HER performance with a low overpotential of 92 mV at 10 mA cm-2 in alkaline media, which is far superior to that of the crystalline TiO2 (over 400 mV). The origin of HER activity is further investigated in detail. The corrugation of the amorphous surface helps stabilize the adsorbed water molecule, crucial for the water dissociation of the Volmer step. The Cu doping can strengthen the orbital hybridization of H1s and O2p favoring the hydrogen adsorption/desorption and improve the electrical conductivity. Our work highlights the great potential of traditionally inactive materials in HER electrocatalysis and helps deepen our understanding of the catalytic mechanism.
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Affiliation(s)
- Bowen Ren
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-sen University, Guangzhou 510275, China
| | - Qiuyan Jin
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-sen University, Guangzhou 510275, China
| | - Yinwei Li
- School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
| | - Yan Li
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-sen University, Guangzhou 510275, China
| | - Hao Cui
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-sen University, Guangzhou 510275, China
| | - Chengxin Wang
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-sen University, Guangzhou 510275, China
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16
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Li B, Liu Y, Rogachev AV, Yarmolenko VA, Rogachev AA, Pyzh AE, Jiang X, Yarmolenko MA. Features of electron beam deposition of polymer coatings with the prolonged release of the drug component. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 110:110730. [PMID: 32204041 DOI: 10.1016/j.msec.2020.110730] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 02/03/2020] [Accepted: 02/03/2020] [Indexed: 12/25/2022]
Abstract
The first part of the paper provides a comprehensive analysis of the features of electron beam formation of polymer coatings with the prolonged release of the drug compound using ciprofloxacin and clotrimazole as an example. The influence features of the low-energy electron beam on the molecular structure of medicinal chemical preparations have been established. The impossibility of producing the coatings based on medicinal compounds with a complex molecular structure (vancomycin, micafungin, etc.) by a low-energy electron beam has been justified. The second part of the paper introduces a fundamentally new vacuum method for the formation of the composite coatings based on antibiotics and antifungal drugs, accompanied by the prolonged release of the drug component. This method allows the formation of composite coatings based on medicinal compounds with a complex molecular structure. It is effective for modifying implants to prevent the risk of implant-associated infectious complications which are the result of the occurrence of mixed biofilms. The method can be used to form composite layers based on topical antitumor drugs for cancer control.
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Affiliation(s)
- Beibei Li
- International Chinese-Belorussian Scientific laboratory on Vacuum-Plasma Technology, Nanjing University of Science and Technology, 200, Xiaolingwei street, Nanjing 210094, China
| | - Yiming Liu
- International Chinese-Belorussian Scientific laboratory on Vacuum-Plasma Technology, Nanjing University of Science and Technology, 200, Xiaolingwei street, Nanjing 210094, China
| | - A V Rogachev
- International Chinese-Belorussian Scientific laboratory on Vacuum-Plasma Technology, Nanjing University of Science and Technology, 200, Xiaolingwei street, Nanjing 210094, China; Francisk Skorina Gomel State University, 104, Sovetskaya street, Gomel 246019, Belarus
| | - V A Yarmolenko
- Gomel State Medical University, 5, Lange street, Gomel 246000, Belarus
| | - A A Rogachev
- International Chinese-Belorussian Scientific laboratory on Vacuum-Plasma Technology, Nanjing University of Science and Technology, 200, Xiaolingwei street, Nanjing 210094, China; Francisk Skorina Gomel State University, 104, Sovetskaya street, Gomel 246019, Belarus
| | - A E Pyzh
- Institute of physiology National Academy of Sciences of Belarus, 28, Academicheskaya street, Minsk 220072, Belarus
| | - Xiaohong Jiang
- International Chinese-Belorussian Scientific laboratory on Vacuum-Plasma Technology, Nanjing University of Science and Technology, 200, Xiaolingwei street, Nanjing 210094, China.
| | - M A Yarmolenko
- International Chinese-Belorussian Scientific laboratory on Vacuum-Plasma Technology, Nanjing University of Science and Technology, 200, Xiaolingwei street, Nanjing 210094, China; Francisk Skorina Gomel State University, 104, Sovetskaya street, Gomel 246019, Belarus
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17
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Gao M, He L, Guo ZY, Yuan YR, Li WW. Sulfate-Functionalized Nickel Hydroxide Nanobelts for Sustained Oxygen Evolution. ACS APPLIED MATERIALS & INTERFACES 2020; 12:443-450. [PMID: 31814385 DOI: 10.1021/acsami.9b14216] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Nickel hydroxide (Ni(OH)2)-based electrocatalysts are promising for the oxygen evolution reaction (OER) due to their low cost, but their activity and durability still need substantial improvement to meet practical application. Here, we report a sulfate-functionalized Ni(OH)2 nanobelt (S-Ni(OH)2) electrocatalyst, which exhibited self-enhanced OER activity due to its self-renewed surface during anodic oxidation. The S-Ni(OH)2 was in situ grown on the nickel foam (NF) surface in potassium peroxydisulfate solution through one-step hydrothermal treatment. This material outperformed all the existing electrocatalysts in the intensity and duration of the OER activity enhancement. An overpotential drop of 70 mV is shown by the S-Ni(OH)2/NF electrode during 110 h reaction at a current density of 100 mA cm-2, and the overpotential remains as low as 358 mV at a current density of 200 mA cm-2. Such activity enhancement during OER is mainly ascribed to the formation of a highly active NiOOH/Ni(SO4)0.3(OH)1.4 composite on the S-Ni(OH)2 surface as a result of gradual sulfate release. Given the facile and environmentally benign fabrication process (without external addition of a Ni source and surfactant) and good electrochemical properties (high activity and long lifetime), the S-Ni(OH)2 holds great potential for practical OER application. The surface self-renewal strategy developed here might also be expanded to other electrocatalysts and electrochemical processes.
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Affiliation(s)
- Miao Gao
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science & Technology of China , Hefei 230026 , China
| | - Lei He
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science & Technology of China , Hefei 230026 , China
| | - Zhi-Yan Guo
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science & Technology of China , Hefei 230026 , China
| | - Yan-Ru Yuan
- USTC-City U joint Advanced Research Center , Suzhou 215123 , China
- Nano Science & Technology Institute , University of Science & Technology of China , Suzhou 215123 , China
| | - Wen-Wei Li
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science & Technology of China , Hefei 230026 , China
- USTC-City U joint Advanced Research Center , Suzhou 215123 , China
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18
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Li JS, Huang MJ, Kong LX, Chen XN, Zhou YW, Li JL, Wang MY. Ruthenium Nanoparticles Anchored on Graphene Hollow Nanospheres Superior to Platinum for the Hydrogen Evolution Reaction in Alkaline Media. Inorg Chem 2019; 59:930-936. [DOI: 10.1021/acs.inorgchem.9b03201] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ji-Sen Li
- Department of Chemistry and Chemical Engineering, Jining University, Qufu 273155, China
| | - Meng-Jie Huang
- Department of Chemistry and Chemical Engineering, Jining University, Qufu 273155, China
| | - Ling-Xin Kong
- Department of Chemistry and Chemical Engineering, Jining University, Qufu 273155, China
| | - Xiao-Nan Chen
- Department of Chemistry and Chemical Engineering, Jining University, Qufu 273155, China
| | - Yu-Wei Zhou
- Department of Chemistry and Chemical Engineering, Jining University, Qufu 273155, China
| | - Jun-Lei Li
- Department of Chemistry and Chemical Engineering, Jining University, Qufu 273155, China
| | - Ming-Yu Wang
- Department of Chemistry and Chemical Engineering, Jining University, Qufu 273155, China
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19
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Wang H, Qiu X, Wang W, Jiang L, Liu H. Iron Sulfide Nanoparticles Embedded Into a Nitrogen and Sulfur Co-doped Carbon Sphere as a Highly Active Oxygen Reduction Electrocatalyst. Front Chem 2019; 7:855. [PMID: 31921777 PMCID: PMC6920104 DOI: 10.3389/fchem.2019.00855] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Accepted: 11/25/2019] [Indexed: 11/13/2022] Open
Abstract
The unique micro/mesoporous spherical nanostructure composed of non-noble metal nanoparticles encapsulated within a heteroatom-doped carbon matrix provides great advantages for constructing advanced non-precious oxygen reduction (ORR) electrocatalysts. Herein, a promising oxygen electrocatalyst comprising iron sulfide (Fe1−xS) nanoparticles embedded into a nitrogen and sulfur co-doped carbon sphere (Fe1−xS/NS-CS) is successfully explored through a simple and fast polymerization between methylolmelamines (MMA) and ammonium ferric citrate (AFC) as well as a high-temperature vulcanization process. Moreover, the proposed polymerization reaction can be finished completely within a very short time, which is useful for large-scale manufacturing. Impressively, the developed Fe1−xS/NS-MCS catalyst demonstrates outstanding ORR catalytic activity in terms of a more positive onset and half-wave potential as well, as much a better methanol tolerance and stability, in comparison with that of Pt/C benchmarked catalyst. The remarkable ORR electrocatalytic properties are strongly associated with the favorable characteristic spherical N, the S co-doped porous graphitic carbon nanoskeleton incorporated with the Fe1−xS nanoparticle-encapsulation structure.
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Affiliation(s)
- Haitao Wang
- Key Laboratory for Green Chemical Process (Ministry of Education), School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, China
| | - Xiaoyu Qiu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, China
| | - Wei Wang
- School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, China
| | - Lipei Jiang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, China
| | - Hongfang Liu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, China
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20
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Wu H, Wang J, Yan J, Wu Z, Jin W. MOF-derived two-dimensional N-doped carbon nanosheets coupled with Co-Fe-P-Se as efficient bifunctional OER/ORR catalysts. NANOSCALE 2019; 11:20144-20150. [PMID: 31613298 DOI: 10.1039/c9nr05744g] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Developing highly efficient, low-cost and bifunctional electrocatalysts for the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) plays a pivotal role in the scalable applications of zinc-air (Zn-air) batteries. Herein, Co-Fe-P-Se nanoparticles supported on two-dimensional nitrogen-doped carbon (Co-Fe-P-Se/NC) to construct a three-dimensional nanostructure were obtained under the assistance of metal-organic frameworks (MOFs). The two-dimensional nanosheet facilitated the electron transfer rate and exposed abundant active sites. The three-dimensional morphology composed of nanosheets was favorable for electrolyte transport and provided abundant channels for gas diffusion during the catalytic process. Moreover, the coexistence of Co and Fe had important effects on promoting the catalytic performances. Lastly, the catalytic performances for OER and ORR could be promoted effectively after the introduction of selenium and phosphorous in the designed electrocatalyst. Benefiting from the above merits, the prepared Co-Fe-P-Se/NC exhibited excellent catalytic performances for OER (overpotential of 0.27 V at 10 mA cm-2), ORR (half-wave potential of 0.76 V) and rechargeable batteries (a low voltage gap of 0.719 V, high power density of 104 mW cm-2 at 200 mA cm-2 and high energy density of 805 W h KgZn-1). Moreover, the prepared electrocatalyst possessed more stable long-term stability in all the conducted experiments. This work provides a novel approach to develop and construct high-performance bifunctional nanocatalysts for metal-air batteries.
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Affiliation(s)
- Hengbo Wu
- School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China.
| | - Jie Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, 266109, China
| | - Ji Yan
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, Henan, PR China
| | - Zexing Wu
- College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, PR China.
| | - Wei Jin
- School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China.
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21
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Wang Y, Chen L, Mao Z, Peng L, Xiang R, Tang X, Deng J, Wei Z, Liao Q. Controlled synthesis of single cobalt atom catalysts via a facile one-pot pyrolysis for efficient oxygen reduction and hydrogen evolution reactions. Sci Bull (Beijing) 2019; 64:1095-1102. [PMID: 36659770 DOI: 10.1016/j.scib.2019.06.012] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 05/31/2019] [Accepted: 06/06/2019] [Indexed: 01/21/2023]
Abstract
Metal-nitrogen doped carbon catalysts (M-N/C) with abundantly accessible M-Nx sites, particularly single metal atom M-N/C (SAM-N/C), have been developed as a substitute for expensive Pt-based catalysts. These catalysts are used to increase the efficiency of otherwise sluggish oxygen reduction reactions (ORR) and hydrogen evolution reactions (HER). However, although the agglomerated metal nanoparticles are usually easy to form, they are very difficult to remove due to the protective surface-coating carbon layers, a factor that significantly hampers SAM-N/C fabrication. Herein, we report a one-step pyrolysis approach to successfully fabricate single cobalt atom Co-N/C (SACo-N/C) by using a Co2+-SCN- coordination compound as the metal precursor. Thanks to the decomposition of Co2+-SCN- compound at lower temperature than that of carbon layer deposition, Co-rich particles grow up to larger ones before carbon layers formation. Even though encapsulated by the carbon layers, it is difficult for the large Co-rich particle to be completely sealed. And thus, it makes the Co atoms possible to escape from incomplete carbon layer, to coordinate with nitrogen atoms, and to form SACo-N/C catalysts. This SACo-N/C exhibits excellent performances for both ORR (half-wave potential of 0.878 V) and HER (overpotential at 10 mA/cm2 of 178 mV), and is thus a potential replacement for Pt-based catalysts. When SACo-N/C is integrated into a Zn-O2 battery, battery with high open-circuit voltage (1.536 V) has high peak power density (266 mW/cm2) and large gravimetric energy density (755 mA h/gZn) at current densities of 100 mA/cm2. Thus, we believe that this strategy may offer a new direction for the effective generation of SAM-N/C catalysts.
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Affiliation(s)
- Yao Wang
- Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, College of Chemistry and Chemical Engineering. Chongqing University, Chongqing 400044, China; Institute of New-Energy and Low-Carbon Technology, Sichuan University, Chengdu 610065, China
| | - Linhui Chen
- Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, College of Chemistry and Chemical Engineering. Chongqing University, Chongqing 400044, China
| | - Zhanxin Mao
- Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, College of Chemistry and Chemical Engineering. Chongqing University, Chongqing 400044, China
| | - Lishan Peng
- Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, College of Chemistry and Chemical Engineering. Chongqing University, Chongqing 400044, China
| | - Rui Xiang
- Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, College of Chemistry and Chemical Engineering. Chongqing University, Chongqing 400044, China
| | - Xianyi Tang
- Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, College of Chemistry and Chemical Engineering. Chongqing University, Chongqing 400044, China
| | - Jianghai Deng
- Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, College of Chemistry and Chemical Engineering. Chongqing University, Chongqing 400044, China
| | - Zidong Wei
- Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, College of Chemistry and Chemical Engineering. Chongqing University, Chongqing 400044, China.
| | - Qiang Liao
- Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Chongqing University, Chongqing 400044, China
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