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Azevedo Beluomini M, Ramos Stradiotto N, Boldrin Zanoni MV, Carta M, McKeown NB, Fletcher PJ, Sain S, Li Z, Marken F. Triphasic Oxygen Storage in Wet Nanoparticulate Polymer of Intrinsic Microporosity (PIM-1) on Platinum: An Electrochemical Investigation. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38995231 DOI: 10.1021/acsami.4c04459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/13/2024]
Abstract
The triphasic interaction of gases with electrode surfaces immersed in aqueous electrolyte is crucial in electrochemical technologies (fuel cells, batteries, sensors). Some microporous materials modify this interaction locally via triphasic storage capacity for gases in aqueous environments linked to changes in apparent oxygen concentration and diffusivity (as well as activity and reactivity). Here, a nanoparticulate polymer of intrinsic microporosity (PIM-1) in aqueous electrolyte is shown to store oxygen gas and thereby enhance electrochemical signals for oxygen reduction in aqueous media. Oxygen reduction current transient data at platinum disk electrodes suggest that the reactivity of ambient oxygen in aqueous electrolyte (typically Doxygen = 2.8 × 10-9 m2 s-1; coxygen = 0.3 mM) is substantially modified (to approximately Dapp,oxygen = 1.6 (±0.3) × 10-12 m2 s-1; capp,oxygen = 50 (±5) mM) with important implications for triphasic electrode processes. The considerable apparent concentration of oxygen even for ambient oxygen levels is important. Potential applications in oxygen sensing, oxygen storage, oxygen catalysis, or applications associated with other types of gases are discussed.
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Affiliation(s)
- Maisa Azevedo Beluomini
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
- Institute of Chemistry, São Paulo State University (UNESP), 14800-060 Araraquara, São Paulo, Brazil
| | - Nelson Ramos Stradiotto
- Institute of Chemistry, São Paulo State University (UNESP), 14800-060 Araraquara, São Paulo, Brazil
| | | | - Mariolino Carta
- Department of Chemistry, Faculty of Science and Engineering, Swansea University, Singleton Park, Swansea SA2 8PP, U.K
| | - Neil B McKeown
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh, Scotland EH9 3JF, U.K
| | - Philip J Fletcher
- Materials & Chemical Characterisation Facility, MC2, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Sunanda Sain
- Materials & Chemical Characterisation Facility, MC2, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Zhongkai Li
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Frank Marken
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
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Zhu Z, Duan J, Chen S. Metal-Organic Framework (MOF)-Based Clean Energy Conversion: Recent Advances in Unlocking its Underlying Mechanisms. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309119. [PMID: 38126651 DOI: 10.1002/smll.202309119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/22/2023] [Indexed: 12/23/2023]
Abstract
Carbon neutrality is an important goal for humanity . As an eco-friendly technology, electrocatalytic clean energy conversion technology has emerged in the 21st century. Currently, metal-organic framework (MOF)-based electrocatalysis, including oxygen reduction reaction (ORR), oxygen evolution reaction (OER), hydrogen evolution reaction (HER), hydrogen oxidation reaction (HOR), carbon dioxide reduction reaction (CO2RR), nitrogen reduction reaction (NRR), are the mainstream energy catalytic reactions, which are driven by electrocatalysis. In this paper, the current advanced characterizations for the analyses of MOF-based electrocatalytic energy reactions have been described in details, such as density function theory (DFT), machine learning, operando/in situ characterization, which provide in-depth analyses of the reaction mechanisms related to the above reactions reported in the past years. The practical applications that have been developed for some of the responses that are of application values, such as fuel cells, metal-air batteries, and water splitting have also been demonstrated. This paper aims to maximize the potential of MOF-based electrocatalysts in the field of energy catalysis, and to shed light on the development of current intense energy situations.
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Affiliation(s)
- Zheng Zhu
- Key Laboratory for Soft Chemistry and Functional Materials, School of Chemistry and Chemical Engineering, School of Energy and Power Engineering, Nanjing University of Science and Technology, Ministry of Education, Nanjing, 210094, China
| | - Jingjing Duan
- Key Laboratory for Soft Chemistry and Functional Materials, School of Chemistry and Chemical Engineering, School of Energy and Power Engineering, Nanjing University of Science and Technology, Ministry of Education, Nanjing, 210094, China
| | - Sheng Chen
- Key Laboratory for Soft Chemistry and Functional Materials, School of Chemistry and Chemical Engineering, School of Energy and Power Engineering, Nanjing University of Science and Technology, Ministry of Education, Nanjing, 210094, China
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Goswami A, Ghosh D, Garai A, Pradhan D, Biradha K. Bimetallic Organic Frameworks via In Situ Solvothermal Sol-Gel-Crystal and Sol-Crystal Transformation as Durable Electrocatalysts for Oxygen Reduction Reaction. Inorg Chem 2024; 63:7303-7313. [PMID: 38597285 DOI: 10.1021/acs.inorgchem.4c00190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
The in situ solvothermal conversion of metal-organic gels (MOGs) to crystalline metal-organic frameworks (MOFs) represents a versatile and ingenious strategy that has been employed for the synthesis of MOF materials with specific morphologies, high yield, and improved functional properties. Herein, we have adopted an in situ solvothermal conversion of bimetallic MOGs to crystalline bimetallic MOFs with the aim of introducing a redox-active metal heterogeneity into the monometallic counterpart. The formation of bimetallic NiZn-MOF and CoZn-MOF via in situ solvothermal sol-gel-crystal and sol-crystal transformation is found to depend on the solvent systems used. The sol-to-gel-to-crystal transformation of NiZn-MOF via the formation of NiZn-MOG is found to occur through the gradual disruption of gel fibers leading to subsequent formation of microcrystals and single crystals of NiZn-MOF. These bimetallic MOFs and MOGs serve as promising electrocatalysts for oxygen reduction reaction (ORR) with an excellent methanol tolerance property, which can be attributed to the enhanced mass and charge transfer, higher oxygen vacancies, and bimetallic synergistic interactions among the heterometals. This work demonstrates a convenient strategy for producing bimetallic MOGs to MOFs through the introduction of a redox-active metal heterogeneity in the inorganic hybrid functional materials for fundamental and applied research. Our results connect MOGs and MOFs which have been regarded as having opposite physical states, that is, soft vs hard, and provide promising structural correlation between MOGs and MOFs at the molecular level.
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Affiliation(s)
- Anindita Goswami
- Department of Chemistry, Indian Institute of Technology Kharagpur, 721302 Kharagpur, India
| | - Debanjali Ghosh
- Materials Science Centre, Indian Institute of Technology Kharagpur, 721302 Kharagpur, India
| | - Abhijit Garai
- Department of Chemistry, Indian Institute of Technology Kharagpur, 721302 Kharagpur, India
| | - Debabrata Pradhan
- Materials Science Centre, Indian Institute of Technology Kharagpur, 721302 Kharagpur, India
| | - Kumar Biradha
- Department of Chemistry, Indian Institute of Technology Kharagpur, 721302 Kharagpur, India
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Yadav G, Jha PK, Jha PA, Singh PK, Choudhary SR, Singh P. Morphological control for high proton conduction in robust Co 3O 4-diethylmethylamine (metal-organic framework) membrane. Phys Chem Chem Phys 2023; 25:32503-32514. [PMID: 37997153 DOI: 10.1039/d3cp02970k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2023]
Abstract
Metal-organic framework (MOF) based proton conductors are synthesized by the Avrami model (time-temperature modalities). Our objective here is to obtain a material with high proton conductivity in anhydrous conditions, improved catalytic behaviour and morphology control of conductivity, band gap and catalysis. For this purpose, we try to understand the role of morphology on mass transportation using computational fluid dynamics and the experimental realisation using the synthesis of MOF membranes with high protonic conductivity. In order to alter the morphology, the membranes are synthesized from protic ionic liquid (dimethyl ethyl amine H2PO4) and metal ion (Co3O4) at different temperatures and duration. A high protonic conductivity of 0.0286 S cm-1 with a high transference number >0.99 is observed in anhydrous conditions with the change in morphology. Furthermore, catalyst properties along with high activity (Tafel slope = 39 mV decade-1) with the alteration in morphology are also investigated in detail and observed adsorption governed conduction. This adsorption governed conduction is verified using computational fluid dynamics simulations with the alteration in morphology. This study suggests that morphology not only plays a pivotal role in obtaining a robust proton exchange membrane, it also improves the catalytic functionality and stability of the membrane.
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Affiliation(s)
- Gargi Yadav
- Department of Physics, Indian Institute of Technology (Banaras Hindu University) Varanasi, Varanasi-221005, India.
| | - Pardeep K Jha
- Department of Physics, Indian Institute of Technology (Banaras Hindu University) Varanasi, Varanasi-221005, India.
| | - Priyanka A Jha
- Department of Physics, Indian Institute of Technology (Banaras Hindu University) Varanasi, Varanasi-221005, India.
| | - Parvin K Singh
- Naval Materials Research Laboratory, MIDC, Shil-Badlapur Road, Addl. Ambernath, Thane, Maharashtra-421501, India
| | - Suman Roy Choudhary
- Naval Materials Research Laboratory, MIDC, Shil-Badlapur Road, Addl. Ambernath, Thane, Maharashtra-421501, India
| | - Prabhakar Singh
- Department of Physics, Indian Institute of Technology (Banaras Hindu University) Varanasi, Varanasi-221005, India.
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Patra R, Mondal S, Sarma D. Thiol and thioether-based metal-organic frameworks: synthesis, structure, and multifaceted applications. Dalton Trans 2023; 52:17623-17655. [PMID: 37961841 DOI: 10.1039/d3dt02884d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Metal-organic frameworks (MOFs) are unique hybrid porous materials formed by combining metal ions or clusters with organic ligands. Thiol and thioether-based MOFs belong to a specific category of MOFs where one or many thiols or thioether groups are present in organic linkers. Depending on the linkers, thiol-thioether MOFs can be divided into three categories: (i) MOFs where both thiol or thioether groups are part of the carboxylic acid ligands, (ii) MOFs where only thiol or thioether groups are present in the organic linker, and (iii) MOFs where both thiol or thioether groups are part of azolate-containing linkers. MOFs containing thiol-thioether-based acid ligands are synthesized through two primary approaches; one is by utilizing thiol and thioether-based carboxylic acid ligands where the bonding pattern of ligands with metal ions plays a vital role in MOF formation (HSAB principle). MOFs synthesized by this approach can be structurally differentiated into two categories: structures without common structural motifs and structures with common structural motifs (related to UiO-66, UiO-67, UiO-68, MIL-53, NU-1100, etc.). The second approach to synthesize thiol and thioether-based MOFs is indirect methods, where thiol or thioether functionality is introduced in MOFs by techniques like post-synthetic modifications (PSM), post-synthetic exchange (PSE) and by forming composite materials. Generally, MOFs containing only thiol-thioether-based ligands are synthesized by interfacial assisted synthesis, forming two-dimensional sheet frameworks, and show significantly high conductivity. A limited study has been done on MOFs containing thiol-thioether-based azolate ligands where both nitrogen- and sulfur-containing functionality are present in the MOF frameworks. These materials exhibit intriguing properties stemming from the interplay between metal centres, organic ligands, and sulfur functionality. As a result, they offer great potential for multifaceted applications, ranging from catalysis, sensing, and conductivity, to adsorption. This perspective is organised through an introduction, schematic representations, and tabular data of the reported thiol and thioether MOFs and concluded with future directions.
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Affiliation(s)
- Rajesh Patra
- Department of Chemistry, Indian Institute of Technology Patna, Bihar 801106, India.
| | - Sumit Mondal
- Department of Chemistry, Indian Institute of Technology Patna, Bihar 801106, India.
| | - Debajit Sarma
- Department of Chemistry, Indian Institute of Technology Patna, Bihar 801106, India.
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Mubarak S, Dhamodharan D, Ghoderao PN, Byun HS. A systematic review on recent advances of metal–organic frameworks-based nanomaterials for electrochemical energy storage and conversion. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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7
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Rationalizing Structural Hierarchy in the Design of Fuel Cell Electrode and Electrolyte Materials Derived from Metal-Organic Frameworks. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12136659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Metal-organic frameworks (MOFs) are arguably a class of highly tuneable polymer-based materials with wide applicability. The arrangement of chemical components and the bonds they form through specific chemical bond associations are critical determining factors in their functionality. In particular, crystalline porous materials continue to inspire their development and advancement towards sustainable and renewable materials for clean energy conversion and storage. An important area of development is the application of MOFs in proton-exchange membrane fuel cells (PEMFCs) and are attractive for efficient low-temperature energy conversion. The practical implementation of fuel cells, however, is faced by performance challenges. To address some of the technical issues, a more critical consideration of key problems is now driving a conceptualised approach to advance the application of PEMFCs. Central to this idea is the emerging field MOF-based systems, which are currently being adopted and proving to be a more efficient and durable means of creating electrodes and electrolytes for proton−exchange membrane fuel cells. This review proposes to discuss some of the key advancements in the modification of PEMs and electrodes, which primarily use functionally important MOFs. Further, we propose to correlate MOF-based PEMFC design and the deeper correlation with performance by comparing proton conductivities and catalytic activities for selected works.
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Kong F, Cui X, Huang Y, Yao H, Chen Y, Tian H, Meng G, Chen C, Chang Z, Shi J. N-Doped Carbon Electrocatalyst: Marked ORR Activity in Acidic Media without the Contribution from Metal Sites? Angew Chem Int Ed Engl 2022; 61:e202116290. [PMID: 35075773 DOI: 10.1002/anie.202116290] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Indexed: 12/14/2022]
Abstract
Fe-N-C electrocatalysts have been demonstrated to be the most promising substitutes for benchmark Pt/C catalysts for the oxygen reduction reaction (ORR). Herein, we report that N-doped carbon materials with trace amounts of iron (0-0.08 wt. %) show excellent ORR activity and durability comparable and even superior to those of Pt/C in both alkaline and acidic media without significant contribution by the metal sites. Such an N-doped carbon (denoted as N-HPCs) features a hollow and hierarchically porous architecture, and more importantly, a noncovalently bonded N-deficient/N-rich heterostructure providing the active sites for oxygen adsorption and activation owing to the efficient electron transfer between the layers. The primary Zn-air battery using N-HPCs as the cathode delivers a much higher power density of 158 mW cm-2 , and the maximum power density in the H2 -O2 fuel cell reaches 486 mW cm-2 , which is comparable to and even better than those using conventional Fe-N-C catalysts at cathodes.
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Affiliation(s)
- Fantao Kong
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
| | - Xiangzhi Cui
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.,School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310021, P. R. China
| | - Yifan Huang
- College of Chemistry and Materials Science, Shanghai Normal University, Shanghai, 200234, P. R. China
| | - Heliang Yao
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
| | - Yafeng Chen
- Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Han Tian
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
| | - Ge Meng
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Chang Chen
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Ziwei Chang
- School of Physical Science and Technology, Shanghai Tech University, Shanghai, 201210, P. R. China
| | - Jianlin Shi
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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9
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Kong F, Cui X, Huang Y, Yao H, Chen Y, Tian H, Meng G, Chen C, Chang Z, Shi J. N‐doped carbon electrocatalyst: marked ORR activity in acidic media without the contribution by metal sites? Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116290] [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)
- Fantao Kong
- Shanghai Institute of Ceramics Chinese Academy of Sciences State Key Lab of High Performance Ceramics and Superfine Microstructure 1295 Dingxi Road shanghai CHINA
| | - Xiangzhi Cui
- Shanghai Institute of Ceramics Chinese Academy of Sciences State Key Lab of High Performance Ceramics and Superfine Microstructure 1295 Dingxi Road shanghai CHINA
| | - Yifan Huang
- Shanghai Normal University College of Chemistry and Materials Science 100 Guilin Road shanghai CHINA
| | - Heliang Yao
- Shanghai Institute of Ceramics Chinese Academy of Sciences State Key Lab of High Performance Ceramics and Superfine Microstructure 1295 Dingxi Road shanghai CHINA
| | - Yafeng Chen
- University of Science and Technology Beijing Collaborative Innovation Center of Steel Technology 30 Xueyuan Road Beijing CHINA
| | - Han Tian
- Shanghai Institute of Ceramics Chinese Academy of Sciences State Key Lab of High Performance Ceramics and Superfine Microstructure 1295 Dingxi Road shanghai CHINA
| | - Ge Meng
- Shanghai Institute of Ceramics Chinese Academy of Sciences State Key Lab of High Performance Ceramics and Superfine Microstructure 1295 Dingxi Road shanghai CHINA
| | - Chang Chen
- Shanghai Institute of Ceramics Chinese Academy of Sciences State Key Lab of High Performance Ceramics and Superfine Microstructure 1295 Dingxi Road shanghai CHINA
| | - Ziwei Chang
- ShanghaiTech University School of Physical Science and Technology 393 Huaxia Middle Road shanghai CHINA
| | - Jianlin Shi
- Shanghai Institute of Ceramics Chinese Academy of Sciences State Key Laboratory of High Performance Ceramics and Superfine Microstructure 1295 Ding-Xi Road 200050 Shanghai CHINA
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Li J, Zhao M, Yi L, Feng B, Fang C, Peng Z, Hu W. Sacrificial templating synthesis of metal-organic framework hybrid nanosheets as efficient pre-electrocatalyst for oxygen evolution reaction in alkaline. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127745] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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11
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Progress in Development of Nanostructured Manganese Oxide as Catalyst for Oxygen Reduction and Evolution Reaction. ENERGIES 2021. [DOI: 10.3390/en14196385] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The rise in energy consumption is largely driven by the growth of population. The supply of energy to meet that demand can be fulfilled by slowly introducing energy from renewable resources. The fluctuating nature of the renewable energy production (i.e., affected by weather such as wind, sun light, etc.), necessitates the increasing demand in developing electricity storage systems. Reliable energy storage system will also play immense roles to support activities related to the internet of things. In the past decades, metal-air batteries have attracted great attention and interest for their high theoretical capacity, environmental friendliness, and their low cost. However, one of the main challenges faced in metal-air batteries is the slow rate of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) that affects the charging and the discharging performance. Various types of nanostructure manganese oxide with high specific surface area and excellent catalytic properties have been synthesized and studied. This review provides a discussion of the recent developments of the nanostructure manganese oxide and their performance in oxygen reduction and oxygen evolution reactions in alkaline media. It includes the experimental work in the nanostructure of manganese oxide, but also the fundamental understanding of ORR and OER. A brief discussion on electrocatalyst kinetics including the measurement and criteria for the ORR and the OER is also included. Finally, recently reported nanostructure manganese oxide catalysts are also discussed.
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Zang Y, Mi C, Wang R, Chen H, Peng P, Xiang Z, Zang S, Mak TCW. Pyrolysis‐Free Synthesized Catalyst towards Acidic Oxygen Reduction by Deprotonation. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106661] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Ying Zang
- Henan Key Laboratory of Crystalline Molecular Functional Materials Henan International Joint Laboratory of Tumor Theranostical Cluster Materials Green Catalysis Center College of Chemistry Zhengzhou University Zhengzhou 450001 China
| | - Chunxia Mi
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Beijing 100029 P. R. China
| | - Rui Wang
- Henan Key Laboratory of Crystalline Molecular Functional Materials Henan International Joint Laboratory of Tumor Theranostical Cluster Materials Green Catalysis Center College of Chemistry Zhengzhou University Zhengzhou 450001 China
| | - Hong Chen
- Henan Key Laboratory of Crystalline Molecular Functional Materials Henan International Joint Laboratory of Tumor Theranostical Cluster Materials Green Catalysis Center College of Chemistry Zhengzhou University Zhengzhou 450001 China
| | - Peng Peng
- Henan Key Laboratory of Crystalline Molecular Functional Materials Henan International Joint Laboratory of Tumor Theranostical Cluster Materials Green Catalysis Center College of Chemistry Zhengzhou University Zhengzhou 450001 China
| | - Zhonghua Xiang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Beijing 100029 P. R. China
| | - Shuang‐Quan Zang
- Henan Key Laboratory of Crystalline Molecular Functional Materials Henan International Joint Laboratory of Tumor Theranostical Cluster Materials Green Catalysis Center College of Chemistry Zhengzhou University Zhengzhou 450001 China
| | - Thomas C. W. Mak
- Henan Key Laboratory of Crystalline Molecular Functional Materials Henan International Joint Laboratory of Tumor Theranostical Cluster Materials Green Catalysis Center College of Chemistry Zhengzhou University Zhengzhou 450001 China
- Department of Chemistry The Chinese University of Hong Kong Shatin, New Territories Hong Kong SAR China
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Zang Y, Mi C, Wang R, Chen H, Peng P, Xiang Z, Zang SQ, Mak TCW. Pyrolysis-Free Synthesized Catalyst towards Acidic Oxygen Reduction by Deprotonation. Angew Chem Int Ed Engl 2021; 60:20865-20871. [PMID: 34288321 DOI: 10.1002/anie.202106661] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 07/15/2021] [Indexed: 11/10/2022]
Abstract
Acidic oxygen reduction is vital for renewable energy devices such as fuel cells. However, many aspects of the catalytic process are still uncertain-especially the large difference in activity in acidic and alkaline media. Thus, the design and synthesis of model catalysts to determine the active centers and the inactivation mechanism are urgently needed. We report a pyrolysis-free synthesis route to fabricate a catalyst (CPF-Fe@NG) for oxygen reduction in acidic conditions. By introducing a deprotonation process, we extended the oxygen reduction reaction (ORR) activity from alkaline to acidic conditions. CPF-Fe@NG demonstrated outstanding performance with a half-wave potential of 853 mV (vs. RHE) and good stability after 10000 cycles in 1 M HClO4 . The pyrolysis-free route could also be used to assemble fuel cells, with a maximum power density of 126 mW cm-2 . Our findings offer new insights into the ORR process to optimize catalysts for both mechanistic studies and practical applications.
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Affiliation(s)
- Ying Zang
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Chunxia Mi
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Rui Wang
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Hong Chen
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Peng Peng
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Zhonghua Xiang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Shuang-Quan Zang
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Thomas C W Mak
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China.,Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
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Pore Modification and Phosphorus Doping Effect on Phosphoric Acid-Activated Fe-N-C for Alkaline Oxygen Reduction Reaction. NANOMATERIALS 2021; 11:nano11061519. [PMID: 34201332 PMCID: PMC8229517 DOI: 10.3390/nano11061519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 06/02/2021] [Accepted: 06/07/2021] [Indexed: 11/21/2022]
Abstract
The price and scarcity of platinum has driven up the demand for non-precious metal catalysts such as Fe-N-C. In this study, the effects of phosphoric acid (PA) activation and phosphorus doping were investigated using Fe-N-C catalysts prepared using SBA-15 as a sacrificial template. The physical and structural changes caused by the addition of PA were analyzed by nitrogen adsorption/desorption and X-ray diffraction. Analysis of the electronic states of Fe, N, and P were conducted by X-ray photoelectron spectroscopy. The amount and size of micropores varied depending on the PA content, with changes in pore structure observed using 0.066 g of PA. The electronic states of Fe and N did not change significantly after treatment with PA, and P was mainly found in states bonded to oxygen or carbon. When 0.135 g of PA was introduced per 1 g of silica, a catalytic activity which was increased slightly by 10 mV at −3 mA/cm2 was observed. A change in Fe-N-C stability was also observed through the introduction of PA.
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Rettig ID, McCormick TM. Enrolling reactive oxygen species in photon-to-chemical energy conversion: fundamentals, technological advances, and applications. ADVANCES IN PHYSICS: X 2021. [DOI: 10.1080/23746149.2021.1950049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- Irving D. Rettig
- Department of Chemistry, Portland State University, Portland, USA
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