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Feng M, Xu Z, Li J, Wang N, Lin K, Zhang M. Insight into the role of reactive species on catalyst surface underlying peroxymonosulfate activation by P-Fe 2MnO 4 loaded on bentonite for trichloroethylene degradation. CHEMOSPHERE 2024; 357:141943. [PMID: 38621492 DOI: 10.1016/j.chemosphere.2024.141943] [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: 01/23/2024] [Revised: 03/30/2024] [Accepted: 04/06/2024] [Indexed: 04/17/2024]
Abstract
In this study, bentonite supporting phosphorus-doped Fe2MnO4 (BPF) was synthesized and applied for PMS activation to degrade TCE. Morphology and structure characterization results indicated the successfully synthesized of BPF, and the BPF/PMS system not only featured high TCE removal (97.4%) but also high reaction rate constant (kobs = 0.0554 min-1) and PMS utilization (70.4%, kobs = 0.0228 min-1). According to the results of various experiments, massive oxygen vacancies on P-Fe2MnO4 alter its charge balance and facilitate the electron transfer process named adjacent transfer (direct electron capture by adsorbed PMS from adjacent TCE). Mn(III) is the main adsorption site for PMS, and the hydroxyl groups on the catalyst (Fe sites of P-Fe2MnO4, Si and Al sites of bentonite) can also offer binding sites for PMS. The hydrogen-bonded PMS on Fe(III) and Mn(III) sites will subsequently accept the discharged electrons to generate free radicals and high-valent metal species. Meanwhile, electron loss of HSO5- that chemically bonded to hydroxyl groups on bentonite will generate SO5•-, which will further produce 1O2 through self-bonding. the active species on the catalyst surface contribute 65% of TCE degradation in the heterogeneous catalytic oxidation system.
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Affiliation(s)
- Meiyun Feng
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Zhiqiang Xu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Jianan Li
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China; Zhejiang Tiandi Environmental Protection Technology Co., Ltd., Hangzhou, 310000, China
| | - Ning Wang
- School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu, 610039, China
| | - Kuangfei Lin
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China.
| | - Meng Zhang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China; Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China.
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2
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Nyamaa O, Kang GH, Huh SC, Yang JH, Nam TH, Noh JP. Unraveling the Mechanism and Practical Implications of the Sol-Gel Synthesis of Spinel LiMn 2O 4 as a Cathode Material for Li-Ion Batteries: Critical Effects of Cation Distribution at the Matrix Level. Molecules 2023; 28:molecules28083489. [PMID: 37110722 PMCID: PMC10142034 DOI: 10.3390/molecules28083489] [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: 03/15/2023] [Revised: 04/12/2023] [Accepted: 04/13/2023] [Indexed: 04/29/2023] Open
Abstract
Spinel LiMn2O4 (LMO) is a state-of-the-art cathode material for Li-ion batteries. However, the operating voltage and battery life of spinel LMO needs to be improved for application in various modern technologies. Modifying the composition of the spinel LMO material alters its electronic structure, thereby increasing its operating voltage. Additionally, modifying the microstructure of the spinel LMO by controlling the size and distribution of the particles can improve its electrochemical properties. In this study, we elucidate the sol-gel synthesis mechanisms of two common types of sol-gels (modified and unmodified metal complexes)-chelate gel and organic polymeric gel-and investigate their structural and morphological properties and electrochemical performances. This study highlights that uniform distribution of cations during sol-gel formation is important for the growth of LMO crystals. Furthermore, a homogeneous multicomponent sol-gel, necessary to ensure that no conflicting morphologies and structures would degrade the electrochemical performances, can be obtained when the sol-gel has a polymer-like structure and uniformly bound ions; this can be achieved by using additional multifunctional reagents, namely cross-linkers.
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Affiliation(s)
- Oyunbayar Nyamaa
- Department of Smart Energy and Mechanical Engineering, Gyeongsang National University, Tongyeong-Haeanro 2, Tongyeong 53064, Republic of Korea
| | - Gyeong-Ho Kang
- Department of Materials Engineering and Convergence Technology, Gyeongsang National University, Jinju-daero 501, Jinju 52828, Republic of Korea
| | - Sun-Chul Huh
- Department of Smart Energy and Mechanical Engineering, Gyeongsang National University, Tongyeong-Haeanro 2, Tongyeong 53064, Republic of Korea
| | - Jeong-Hyeon Yang
- Department of Mechanical System Engineering, Gyeongsang National University, Tongyeong-Haeanro 2, Tongyeong 53064, Republic of Korea
| | - Tae-Hyun Nam
- Department of Materials Engineering and Convergence Technology, Gyeongsang National University, Jinju-daero 501, Jinju 52828, Republic of Korea
| | - Jung-Pil Noh
- Department of Smart Energy and Mechanical Engineering, Gyeongsang National University, Tongyeong-Haeanro 2, Tongyeong 53064, Republic of Korea
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3
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Yuan D, Su M, Liu Q. Effects of AgNPs-coating on the electrochemical performance of LiMn2O4 cathode material for lithium-ion batteries. J Solid State Electrochem 2022. [DOI: 10.1007/s10008-022-05262-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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4
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Zhao ZY, Liu X, Shao ZC. Solid-State Synthesis of Na and Al Co-doped Lithium Manganese Spinel Cathode Material. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2022. [DOI: 10.1134/s0036024422140321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Ma J, Long B, Zhang Q, Qian Y, Song T, He W, Xiao M, Liu L, Wang X, Tong Y. Turning commercial MnO 2 (≥85 wt%) into high-crystallized K +-doped LiMn 2O 4 cathode with superior structural stability by a low-temperature molten salt method. J Colloid Interface Sci 2021; 608:1377-1383. [PMID: 34742059 DOI: 10.1016/j.jcis.2021.10.113] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/16/2021] [Accepted: 10/18/2021] [Indexed: 11/28/2022]
Abstract
The obtainment of low-cost, easily prepared and high-powered LiMn2O4 is the key to achieve its wide application in various electronic devices. In this work, a mild and easily scaled molten salt method (KCl@LiCl) is utilized to convert commercial MnO2 to the high-performance LiMn2O4. At the same reaction temperature, the molten salt method leads to the formation of K+-doped LiMn2O4 with higher crystallinity compared to the conventional solid state method, which contributes to the improved inner charge transfer. The Li3PO4 protective layer is coated on the surface of K+-doped LiMn2O4 to elevate the interfacial stability and the Li+ transfer on interface. Thus, the optimized electrode shows a higher specific discharge capacity (103/60 mAh g-1 at 0.02/2 A g-1) and a longer cyclic life (80 mAh g-1 after 500 cycles at 0.5 A g-1) compared to those of LiMn2O4 by solid state method (49/2 mAh g-1 at 0.02/2 A g-1 and 20 mAh g-1 after 500 cycles at 0.5 A g-1).
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Affiliation(s)
- Junfei Ma
- National Base for International Science and Technology Cooperation, National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery, Hunan Province Key Laboratory of Electrochemical Energy Storage and Conversion, School of Chemical Engineering and Technology, School of Chemistry, Xiangtan University, Xiangtan 411105, PR China
| | - Bei Long
- National Base for International Science and Technology Cooperation, National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery, Hunan Province Key Laboratory of Electrochemical Energy Storage and Conversion, School of Chemical Engineering and Technology, School of Chemistry, Xiangtan University, Xiangtan 411105, PR China.
| | - Qing Zhang
- National Base for International Science and Technology Cooperation, National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery, Hunan Province Key Laboratory of Electrochemical Energy Storage and Conversion, School of Chemical Engineering and Technology, School of Chemistry, Xiangtan University, Xiangtan 411105, PR China
| | - Yuzhu Qian
- National Base for International Science and Technology Cooperation, National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery, Hunan Province Key Laboratory of Electrochemical Energy Storage and Conversion, School of Chemical Engineering and Technology, School of Chemistry, Xiangtan University, Xiangtan 411105, PR China
| | - Ting Song
- National Base for International Science and Technology Cooperation, National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery, Hunan Province Key Laboratory of Electrochemical Energy Storage and Conversion, School of Chemical Engineering and Technology, School of Chemistry, Xiangtan University, Xiangtan 411105, PR China
| | - Wenyuan He
- National Base for International Science and Technology Cooperation, National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery, Hunan Province Key Laboratory of Electrochemical Energy Storage and Conversion, School of Chemical Engineering and Technology, School of Chemistry, Xiangtan University, Xiangtan 411105, PR China.
| | - Manjun Xiao
- National Base for International Science and Technology Cooperation, National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery, Hunan Province Key Laboratory of Electrochemical Energy Storage and Conversion, School of Chemical Engineering and Technology, School of Chemistry, Xiangtan University, Xiangtan 411105, PR China.
| | - Li Liu
- National Base for International Science and Technology Cooperation, National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery, Hunan Province Key Laboratory of Electrochemical Energy Storage and Conversion, School of Chemical Engineering and Technology, School of Chemistry, Xiangtan University, Xiangtan 411105, PR China
| | - Xianyou Wang
- National Base for International Science and Technology Cooperation, National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery, Hunan Province Key Laboratory of Electrochemical Energy Storage and Conversion, School of Chemical Engineering and Technology, School of Chemistry, Xiangtan University, Xiangtan 411105, PR China
| | - Yexiang Tong
- The Key Lab of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, PR China
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6
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Effects of a Sodium Phosphate Electrolyte Additive on Elevated Temperature Performance of Spinel Lithium Manganese Oxide Cathodes. MATERIALS 2021; 14:ma14164670. [PMID: 34443193 PMCID: PMC8402163 DOI: 10.3390/ma14164670] [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: 07/26/2021] [Revised: 08/13/2021] [Accepted: 08/17/2021] [Indexed: 11/20/2022]
Abstract
LiMn2O4 (LMO) spinel cathode materials suffer from severe degradation at elevated temperatures because of Mn dissolution. In this research, monobasic sodium phosphate (NaH2PO4, P2) is examined as an electrolyte additive to mitigate Mn dissolution; thus, the thermal stability of the LMO cathode material is improved. The P2 additive considerably improves the cyclability and storage performances of LMO/graphite and LMO/LMO symmetric cells at 60 °C. We explain that P2 suppresses the hydrofluoric acid content in the electrolyte and forms a protective cathode electrolyte interphase layer, which mitigates the Mn dissolution behavior of the LMO cathode material. Considering its beneficial role, the P2 additive is a useful additive for spinel LMO cathodes that suffer from severe Mn dissolution.
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7
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Rada E, Lima E, Ruiz F, Moreno S. Small hollow nanostructures as a new morphology to improve stability of LiMn 2O 4cathodes in Li-ion batteries. NANOTECHNOLOGY 2021; 32:435403. [PMID: 34265759 DOI: 10.1088/1361-6528/ac14e7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 07/15/2021] [Indexed: 06/13/2023]
Abstract
Spinel LiMn2O4is a promising cathode material for lithium-ion batteries. However, bulk LiMn2O4commonly suffers from capacity fading due to the dissolution of Mn into the electrolyte during cycling. Moreover, bulk LiMn2O4exhibits a low Li+diffusion coefficient that limits the volume available to Li+storage. Herein, we report the synthesis of small hollow porous LiMn2O4nanostructures with a mean size of 51 nm exhibiting exposed (111) planes, assembled by nanoparticles of about 6 nm in size. The morphological features of these nanostructures ensure a large contact area between the material and the electrolyte, shorten the pathways for Li+diffusion and provide effective accommodation of the volume change during cycling. Therefore, these hollow nanostructures exhibit improved discharge capacity retention (nearly 82% after 200 cycles) and a greater Li+diffusion coefficient (3.46 × 10-7cm s-1) compared with that of bulk LiMn2O4.
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Affiliation(s)
- Evilus Rada
- Instituto de Nanociencia y Nanotecnología, INN, CNEA-CONICET, Centro Atómico Bariloche, S. C. Bariloche, 8400, Argentina
| | - Enio Lima
- Instituto de Nanociencia y Nanotecnología, INN, CNEA-CONICET, Centro Atómico Bariloche, S. C. Bariloche, 8400, Argentina
| | - Fabricio Ruiz
- Gerencia de Investigación Aplicada, CNEA-CONICET, Centro Atómico Bariloche, S. C. Bariloche, 8400, Argentina
| | - Sergio Moreno
- Instituto de Nanociencia y Nanotecnología, INN, CNEA-CONICET, Centro Atómico Bariloche, S. C. Bariloche, 8400, Argentina
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8
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Li H, Erinmwingbovo C, Birkenstock J, Schowalter M, Rosenauer A, La Mantia F, Mädler L, Pokhrel S. Double Flame-Fabricated High-Performance AlPO 4/LiMn 2O 4 Cathode Material for Li-Ion Batteries. ACS APPLIED ENERGY MATERIALS 2021; 4:4428-4443. [PMID: 34060544 PMCID: PMC8157533 DOI: 10.1021/acsaem.1c00024] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 04/06/2021] [Indexed: 06/02/2023]
Abstract
The spinel LiMn2O4 (LMO) is a promising cathode material for rechargeable Li-ion batteries due to its excellent properties, including cost effectiveness, eco-friendliness, high energy density, and rate capability. The commercial application of LiMn2O4 is limited by its fast capacity fading during cycling, which lowers the electrochemical performance. In the present work, phase-pure and crystalline LiMn2O4 spinel in the nanoscale were synthesized using single flame spray pyrolysis via screening 16 different precursor-solvent combinations. To overcome the drawback of capacity fading, LiMn2O4 was homogeneously mixed with different percentages of AlPO4 using versatile multiple flame sprays. The mixing was realized by producing AlPO4 and LiMn2O4 aerosol streams in two independent flames placed at 20° to the vertical axis. The structural and morphological analyses by X-ray diffraction indicated the formation of a pure LMO phase and/or AlPO4-mixed LiMn2O4. Electrochemical analysis indicated that LMO nanoparticles of 17.8 nm (d BET) had the best electrochemical performance among the pure LMOs with an initial capacity and a capacity retention of 111.4 mA h g-1 and 88% after 100 cycles, respectively. A further increase in the capacity retention to 93% and an outstanding initial capacity of 116.1 mA h g-1 were acquired for 1% AlPO4.
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Affiliation(s)
- Haipeng Li
- Faculty
of Production Engineering, University of
Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany
- Leibniz
Institute for Materials Engineering IWT, Badgasteiner Str. 3, 28359 Bremen, Germany
| | - Collins Erinmwingbovo
- Energiespeicher-
und Energiewandlersysteme, Universität
Bremen, Bibliothekstr.
1, 28325 Bremen, Germany
| | - Johannes Birkenstock
- Central
Laboratory for Crystallography and Applied Materials, University of Bremen, 28359 Bremen, Germany
| | - Marco Schowalter
- Institute
of Solid State Physics, University of Bremen, Otto-Hahn-Allee 1, 28359 Bremen, Germany
| | - Andreas Rosenauer
- Institute
of Solid State Physics, University of Bremen, Otto-Hahn-Allee 1, 28359 Bremen, Germany
| | - Fabio La Mantia
- Energiespeicher-
und Energiewandlersysteme, Universität
Bremen, Bibliothekstr.
1, 28325 Bremen, Germany
| | - Lutz Mädler
- Faculty
of Production Engineering, University of
Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany
- Leibniz
Institute for Materials Engineering IWT, Badgasteiner Str. 3, 28359 Bremen, Germany
| | - Suman Pokhrel
- Faculty
of Production Engineering, University of
Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany
- Leibniz
Institute for Materials Engineering IWT, Badgasteiner Str. 3, 28359 Bremen, Germany
- Central
Laboratory for Crystallography and Applied Materials, University of Bremen, 28359 Bremen, Germany
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9
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Atomic Insights into Ti Doping on the Stability Enhancement of Truncated Octahedron LiMn 2O 4 Nanoparticles. NANOMATERIALS 2021; 11:nano11020508. [PMID: 33671361 PMCID: PMC7922770 DOI: 10.3390/nano11020508] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 02/10/2021] [Accepted: 02/15/2021] [Indexed: 11/29/2022]
Abstract
Ti-doped truncated octahedron LiTixMn2-xO4 nanocomposites were synthesized through a facile hydrothermal treatment and calcination process. By using spherical aberration-corrected scanning transmission electron microscopy (Cs-STEM), the effects of Ti-doping on the structure evolution and stability enhancement of LiMn2O4 are revealed. It is found that truncated octahedrons are easily formed in Ti doping LiMn2O4 material. Structural characterizations reveal that most of the Ti4+ ions are composed into the spinel to form a more stable spinel LiTixMn2−xO4 phase framework in bulk. However, a portion of Ti4+ ions occupy 8a sites around the {001} plane surface to form a new TiMn2O4-like structure. The combination of LiTixMn2−xO4 frameworks in bulk and the TiMn2O4-like structure at the surface may enhance the stability of the spinel LiMn2O4. Our findings demonstrate the critical role of Ti doping in the surface chemical and structural evolution of LiMn2O4 and may guide the design principle for viable electrode materials.
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10
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Su C, Chen R, Sa Z, Li H, Xiang M, Guo J, Bai W, Liu X. High-capacity and superior behavior of the Ni–Cu co-doped spinel LiMn 2O 4 cathodes rapidly prepared via microwave-induced solution flameless combustion. NEW J CHEM 2021. [DOI: 10.1039/d1nj02839a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
High-capacity and high-rate properties of the Ni–Cu co-doped spinel LiMn2O4 cathodes for Li-ion batteries.
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Affiliation(s)
- Changwei Su
- College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, P. R. China
- Key Laboratory of Green-chemistry Materials in University of Yunnan Province, Yunnan Minzu University, Kunming 650500, P. R. China
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650500, P. R. China
| | - Ruifang Chen
- Key Laboratory of Green-chemistry Materials in University of Yunnan Province, Yunnan Minzu University, Kunming 650500, P. R. China
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650500, P. R. China
| | - Zhaoyao Sa
- Key Laboratory of Green-chemistry Materials in University of Yunnan Province, Yunnan Minzu University, Kunming 650500, P. R. China
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650500, P. R. China
| | - Hong Li
- Key Laboratory of Green-chemistry Materials in University of Yunnan Province, Yunnan Minzu University, Kunming 650500, P. R. China
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650500, P. R. China
| | - Mingwu Xiang
- Key Laboratory of Green-chemistry Materials in University of Yunnan Province, Yunnan Minzu University, Kunming 650500, P. R. China
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650500, P. R. China
| | - Junming Guo
- Key Laboratory of Green-chemistry Materials in University of Yunnan Province, Yunnan Minzu University, Kunming 650500, P. R. China
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650500, P. R. China
| | - Wei Bai
- Key Laboratory of Green-chemistry Materials in University of Yunnan Province, Yunnan Minzu University, Kunming 650500, P. R. China
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650500, P. R. China
| | - Xiaofang Liu
- Key Laboratory of Green-chemistry Materials in University of Yunnan Province, Yunnan Minzu University, Kunming 650500, P. R. China
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650500, P. R. China
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11
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Yao L, Yang W, Niu Y, Liu J, Zhang S, Wu S, Deng Z, Ma L, Wang C, Cao Z. Comparison of the effects of cation and phosphorus doping in cobalt-based spinel oxides towards the oxygen evolution reaction. CrystEngComm 2021. [DOI: 10.1039/d0ce01771j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phosphorus incorporation further boosted the OER activity of cation-doped Co-based spinel oxides via remarkably tuning the oxygen vacancies, crystallinity and electrochemically active surface area on the surface.
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Affiliation(s)
- Lili Yao
- School and Hospital of Stomatology
- Wenzhou Medical University
- Wenzhou 325027
- PR China
| | - Wenxiu Yang
- School of Materials Science and Engineering
- Beijing Institute of Technology
- Beijing 100081
- PR China
| | - Yongjian Niu
- Tianjin Key Laboratory of Advanced Functional Porous Materials and Center for Electron Microscopy
- Institute for New Energy Materials & Low-Carbon Technologies
- School of Materials Science and Engineering
- Tianjin University of Technology
- Tianjin 300384
| | - Jiming Liu
- School and Hospital of Stomatology
- Wenzhou Medical University
- Wenzhou 325027
- PR China
| | - Shun Zhang
- Tianjin Key Laboratory of Advanced Functional Porous Materials and Center for Electron Microscopy
- Institute for New Energy Materials & Low-Carbon Technologies
- School of Materials Science and Engineering
- Tianjin University of Technology
- Tianjin 300384
| | - Shuyi Wu
- School and Hospital of Stomatology
- Wenzhou Medical University
- Wenzhou 325027
- PR China
| | - Zhennan Deng
- School and Hospital of Stomatology
- Wenzhou Medical University
- Wenzhou 325027
- PR China
| | - Lin Ma
- College of Biotechnology
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- PR China
| | - Cheng Wang
- Tianjin Key Laboratory of Advanced Functional Porous Materials and Center for Electron Microscopy
- Institute for New Energy Materials & Low-Carbon Technologies
- School of Materials Science and Engineering
- Tianjin University of Technology
- Tianjin 300384
| | - Zhensheng Cao
- School and Hospital of Stomatology
- Wenzhou Medical University
- Wenzhou 325027
- PR China
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12
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Lanjan A, Ghalami Choobar B, Amjad-Iranagh S. Promoting lithium-ion battery performance by application of crystalline cathodes LixMn1−zFezPO4. J Solid State Electrochem 2020. [DOI: 10.1007/s10008-019-04480-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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13
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Improved Electrochemical Properties of LiMn 2O 4-Based Cathode Material Co-Modified by Mg-Doping and Octahedral Morphology. MATERIALS 2019; 12:ma12172807. [PMID: 31480434 PMCID: PMC6747765 DOI: 10.3390/ma12172807] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 08/28/2019] [Accepted: 08/29/2019] [Indexed: 01/06/2023]
Abstract
In this work, the spinel LiMn2O4 cathode material was prepared by high-temperature solid-phase method and further optimized by co-modification strategy based on the Mg-doping and octahedral morphology. The octahedral LiMn1.95Mg0.05O4 sample belongs to the spinel cubic structure with the space group of Fd3m, and no other impurities are presented in the XRD patterns. The octahedral LiMn1.95Mg0.05O4 particles show narrow size distribution with regular morphology. When used as cathode material, the obtained LiMn1.95Mg0.05O4 octahedra shows excellent electrochemical properties. This material can exhibit high capacity retention of 96.8% with 100th discharge capacity of 111.6 mAh g−1 at 1.0 C. Moreover, the rate performance and high-temperature cycling stability of LiMn2O4 are effectively improved by the co-modification strategy based on Mg-doping and octahedral morphology. These results are mostly given to the fact that the addition of magnesium ions can suppress the Jahn–Teller effect and the octahedral morphology contributes to the Mn dissolution, which can improve the structural stability of LiMn2O4.
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