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Synthesis and electrochemical properties of a cubic polymorph of LiNi1/2Mn1/2O2 with a spinel framework. J Solid State Electrochem 2021. [DOI: 10.1007/s10008-021-05087-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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2
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Shi B, Gim J, Li L, Wang C, Vu A, Croy JR, Thackeray MM, Lee E. LT-LiMn 0.5Ni 0.5O 2: a unique co-free cathode for high energy Li-ion cells. Chem Commun (Camb) 2021; 57:11009-11012. [PMID: 34558581 DOI: 10.1039/d1cc04334j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel LiMn0.5Ni0.5O2 cathode with a predominant, partially-disordered lithiated-spinel structure has been prepared by a 'low temperature' (LT) synthesis. Li/LT-LiMn0.5Ni0.5O2 cells operate between 5.0 and 2.5 V with good cycling stability, yielding a capacity of 225 mA h g-1, principally by redox reactions on the nickel ions on distinct voltage plateaus at ∼3.6 V and ∼4.6 V.
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Affiliation(s)
- Boyu Shi
- Electrochemical Energy Storage Department, Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA.
| | - Jihyeon Gim
- Electrochemical Energy Storage Department, Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA.
| | - Linze Li
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - Chongmin Wang
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - Anh Vu
- Electrochemical Energy Storage Department, Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA.
| | - Jason R Croy
- Electrochemical Energy Storage Department, Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA.
| | - Michael M Thackeray
- Electrochemical Energy Storage Department, Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA.
| | - Eungje Lee
- Electrochemical Energy Storage Department, Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA.
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3
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Subramani T, Voskanyan A, Jayanthi K, Abramchuk M, Navrotsky A. A Comparison of Order-Disorder in Several Families of Cubic Oxides. Front Chem 2021; 9:719169. [PMID: 34540800 PMCID: PMC8440809 DOI: 10.3389/fchem.2021.719169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 08/02/2021] [Indexed: 11/23/2022] Open
Abstract
Order-disorder on both cation and oxygen sites is a hallmark of fluorite-derived structures, including pyrochlores. Ordering can occur on long- and short-range scales and can result in persistent metastable states. In various cubic oxide systems, different types of disorder are seen. The purpose of this paper is to review and compare the types and energetics of order-disorder phenomena in several families of cubic oxides having pyrochlore, weberite, defect fluorite, perovskite, rocksalt, and spinel structures. The goal is to better understand how structure, composition, and thermodynamic parameters (enthalpy and entropy) determine the feasibility of different competing ordering processes and structures in these diverse systems.
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Affiliation(s)
| | | | | | | | - A. Navrotsky
- School of Molecular Sciences and Navrotsky Eyring Center for Materials of the Universe, Arizona State University, Tempe, AZ, United States
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4
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Bao L, Yang Z, Chen L, Su Y, Lu Y, Li W, Yuan F, Dong J, Fang Y, Ji Z, Shi C, Feng W. The Effects of Trace Yb Doping on the Electrochemical Performance of Li-Rich Layered Oxides. CHEMSUSCHEM 2019; 12:2294-2301. [PMID: 30806010 DOI: 10.1002/cssc.201900226] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 02/24/2019] [Indexed: 06/09/2023]
Abstract
Layered lithium-rich cathode materials are one of the most promising cathode materials owing to their higher mass energy density than the commercial counterparts. A series of trace Yb-doped lithium-rich cathode materials Li1.2 Mn0.54 Ni0.13 Co0.13-x Ybx O2 (0≤x≤0.050) were synthesized and the effects were investigated by XRD, X-ray photoelectron spectroscopy, and high-resolution TEM. The participation of Yb ions in electrochemical reactions and the larger binding energy of Yb-O than M-O (M=Mn, Ni, Co), which expands the lithium layer spacing and stabilizes the oxygen stacking, resulted in excellent performance of materials doped with a limited Yb content (x≤0.005). However, higher doping amounts (x>0.005) significantly increased the charge-transfer impedance and led to a sharp deterioration in electrochemical performance. The reason lies in the large difference in ionic radius between the transition metals (Mn, Co, and Ni) and Yb. There is an upper limit to the amount of Yb ions in the lattice. If the amount of Yb is higher than the limit, excess Yb ions enter the Li layers instead of staying in the transition-metal layers or even segregate on the surface and form electrochemically inert oxides.
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Affiliation(s)
- Liying Bao
- School of Materials Science & Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
| | - Zeliang Yang
- School of Materials Science & Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
| | - Lai Chen
- School of Materials Science & Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
| | - Yuefeng Su
- School of Materials Science & Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
| | - Yun Lu
- School of Materials Science & Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
| | - Weikang Li
- School of Materials Science & Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
| | - Feiyu Yuan
- School of Materials Science & Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
| | - Jinyang Dong
- School of Materials Science & Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
| | - Youyou Fang
- School of Materials Science & Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
| | - Zhe Ji
- School of Materials Science & Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
| | - Chen Shi
- School of Materials Science & Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
| | - Wu Feng
- School of Materials Science & Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
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5
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Yu Y, Karayaylali P, Nowak SH, Giordano L, Gauthier M, Hong W, Kou R, Li Q, Vinson J, Kroll T, Sokaras D, Sun CJ, Charles N, Maglia F, Jung R, Shao-Horn Y. Revealing Electronic Signature of Lattice Oxygen Redox in Lithium Ruthenates and Implications for High-Energy Li-ion Battery Material Designs. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2019; 31:10.1021/acs.chemmater.9b01821. [PMID: 32210521 PMCID: PMC7092754 DOI: 10.1021/acs.chemmater.9b01821] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Anion redox in lithium transition metal oxides such as Li2RuO3 and Li2MnO3, has catalyzed intensive research efforts to find transition metal oxides with anion redox that may boost the energy density of lithium-ion batteries. The physical origin of observed anion redox remains debated, and more direct experimental evidence is needed. In this work, we have shown electronic signatures of oxygen-oxygen coupling, direct evidence central to lattice oxygen redox (O2-/(O2)n-), in charged Li2-xRuO3 after Ru oxidation (Ru4+/Ru5+) upon first-electron removal with lithium de-intercalation. Experimental Ru L3-edge high-energy-resolution fluorescence detected X-ray absorption spectra (HERFD-XAS), supported by ab-initio simulations, revealed that the increased intensity in the high-energy shoulder upon lithium de-intercalation resulted from increased O-O coupling, inducing (O-O) σ*-like states with π overlap with Ru d-manifolds, in agreement with O K-edge XAS spectra. Experimental and simulated O K-edge X-ray emission spectra (XES) further supported this observation with the broadening of the oxygen non-bonding feature upon charging, also originated from (O-O) σ* states. This lattice oxygen redox of Li2-xRuO3 was accompanied by a small amount of O2 evolution in the first charge from differential electrochemistry mass spectrometry (DEMS) but diminished in the subsequent cycles, in agreement with the more reduced states of Ru in later cycles from Ru L3-edge HERFD-XAS. These observations indicated that Ru redox contributed more to discharge capacities after the first cycle. This study has pinpointed the key spectral fingerprints related to lattice oxygen redox from a molecular level and constructed a transferrable framework to rationally interpret the spectroscopic features by combining advanced experiments and theoretical calculations to design materials for Li-ion batteries and electrocatalysis applications.
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Affiliation(s)
- Yang Yu
- Department of Materials Science and Engineering, MIT, Cambridge, MA 02139, USA
| | | | | | - Livia Giordano
- Department of Mechanical Engineering, MIT, Cambridge, MA 02139, USA
- Research Laboratory of Electronics, MIT, Cambridge, MA 02139, USA
| | - Magali Gauthier
- Research Laboratory of Electronics, MIT, Cambridge, MA 02139, USA
| | - Wesley Hong
- Department of Materials Science and Engineering, MIT, Cambridge, MA 02139, USA
| | - Ronghui Kou
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Qinghao Li
- Advanced Light Source, Lawrence Berkeley National Laboratory, CA 94720, USA
| | - John Vinson
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - Thomas Kroll
- SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | | | - Cheng-Jun Sun
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Nenian Charles
- Research Laboratory of Electronics, MIT, Cambridge, MA 02139, USA
| | | | - Roland Jung
- BMW Group, Petuelring 130, 80788 Munich, Germany
| | - Yang Shao-Horn
- Department of Materials Science and Engineering, MIT, Cambridge, MA 02139, USA
- Department of Mechanical Engineering, MIT, Cambridge, MA 02139, USA
- Research Laboratory of Electronics, MIT, Cambridge, MA 02139, USA
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Castro FC, Dravid VP. Characterization of Lithium Ion Battery Materials with Valence Electron Energy-Loss Spectroscopy. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2018; 24:214-220. [PMID: 29877170 DOI: 10.1017/s1431927618000302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Cutting-edge research on materials for lithium ion batteries regularly focuses on nanoscale and atomic-scale phenomena. Electron energy-loss spectroscopy (EELS) is one of the most powerful ways of characterizing composition and aspects of the electronic structure of battery materials, particularly lithium and the transition metal mixed oxides found in the electrodes. However, the characteristic EELS signal from battery materials is challenging to analyze when there is strong overlap of spectral features, poor signal-to-background ratios, or thicker and uneven sample areas. A potential alternative or complementary approach comes from utilizing the valence EELS features (<20 eV loss) of battery materials. For example, the valence EELS features in LiCoO2 maintain higher jump ratios than the Li-K edge, most notably when spectra are collected with minimal acquisition times or from thick sample regions. EELS maps of these valence features give comparable results to the Li-K edge EELS maps of LiCoO2. With some spectral processing, the valence EELS maps more accurately highlight the morphology and distribution of LiCoO2 than the Li-K edge maps, especially in thicker sample regions. This approach is beneficial for cases where sample thickness or beam sensitivity limit EELS analysis, and could be used to minimize electron dosage and sample damage or contamination.
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Affiliation(s)
- Fernando C Castro
- 1Department of Materials Science and Engineering,Northwestern University,2220 Campus Drive, Cook Hall, Room 1137, Evanston,IL 60208,USA
| | - Vinayak P Dravid
- 1Department of Materials Science and Engineering,Northwestern University,2220 Campus Drive, Cook Hall, Room 1137, Evanston,IL 60208,USA
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Kim S, Hegde VI, Yao Z, Lu Z, Amsler M, He J, Hao S, Croy JR, Lee E, Thackeray MM, Wolverton C. First-Principles Study of Lithium Cobalt Spinel Oxides: Correlating Structure and Electrochemistry. ACS APPLIED MATERIALS & INTERFACES 2018; 10:13479-13490. [PMID: 29616800 DOI: 10.1021/acsami.8b00394] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Embedding a lithiated cobalt oxide spinel (Li2Co2O4, or LiCoO2) component or a nickel-substituted LiCo1- xNi xO2 analogue in structurally integrated cathodes such as xLi2MnO3·(1- x)LiM'O2 (M' = Ni/Co/Mn) has been recently proposed as an approach to advance the performance of lithium-ion batteries. Here, we first revisit the phase stability and electrochemical performance of LiCoO2 synthesized at different temperatures using density functional theory calculations. Consistent with previous studies, we find that the occurrence of low- and high-temperature structures (i.e., cubic lithiated spinel LT-LiCoO2; or Li2Co2O4 ( Fd3̅ m) vs trigonal-layered HT-LiCoO2 ( R3̅ m), respectively) can be explained by a small difference in the free energy between these two compounds. Additionally, the observed voltage profile of a Li/LiCoO2 cell for both cubic and trigonal phases of LiCoO2, as well as the migration barrier for lithium diffusion from an octahedral (Oh) site to a tetrahedral site (Td) in Fd3̅ m LT-Li1- xCoO2, has been calculated to help understand the complex electrochemical charge/discharge processes. A search of LiCo xM1- xO2 lithiated spinel (M = Ni or Mn) structures and compositions is conducted to extend the exploration of the chemical space of Li-Co-Mn-Ni-O electrode materials. We predict a new lithiated spinel material, LiNi0.8125Co0.1875O2 ( Fd3̅ m), with a composition close to that of commercial, layered LiNi0.8Co0.15Al0.05O2, which may have the potential for exploitation in structurally integrated, layered spinel cathodes for next-generation lithium-ion batteries.
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Affiliation(s)
- Soo Kim
- Department of Materials Science and Engineering , Northwestern University , 2220 Campus Drive , Evanston , Illinois 60208 , United States
| | - Vinay I Hegde
- Department of Materials Science and Engineering , Northwestern University , 2220 Campus Drive , Evanston , Illinois 60208 , United States
| | - Zhenpeng Yao
- Department of Materials Science and Engineering , Northwestern University , 2220 Campus Drive , Evanston , Illinois 60208 , United States
| | - Zhi Lu
- Department of Materials Science and Engineering , Northwestern University , 2220 Campus Drive , Evanston , Illinois 60208 , United States
| | - Maximilian Amsler
- Department of Materials Science and Engineering , Northwestern University , 2220 Campus Drive , Evanston , Illinois 60208 , United States
| | - Jiangang He
- Department of Materials Science and Engineering , Northwestern University , 2220 Campus Drive , Evanston , Illinois 60208 , United States
| | - Shiqiang Hao
- Department of Materials Science and Engineering , Northwestern University , 2220 Campus Drive , Evanston , Illinois 60208 , United States
| | - Jason R Croy
- Chemical Sciences and Engineering Division , Argonne National Laboratory , 9700 S. Cass Avenue , Argonne , Illinois 60439 , United States
| | - Eungje Lee
- Chemical Sciences and Engineering Division , Argonne National Laboratory , 9700 S. Cass Avenue , Argonne , Illinois 60439 , United States
| | - Michael M Thackeray
- Chemical Sciences and Engineering Division , Argonne National Laboratory , 9700 S. Cass Avenue , Argonne , Illinois 60439 , United States
| | - Chris Wolverton
- Department of Materials Science and Engineering , Northwestern University , 2220 Campus Drive , Evanston , Illinois 60208 , United States
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8
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Singh L, Lee J, Kim GW, Ji M, Moon C, Lee H, Ha JW, Lee Y. A simple, rapid and efficient flame synthesis of ultrafine LiNi0.95−xCoxTi0.05O2 (x = 0.25 and 0.30): a versatile route to synthesize Ni-rich cathode materials for Li-ion batteries. NEW J CHEM 2018. [DOI: 10.1039/c7nj02679j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple, rapid, and efficient flame synthesis method was developed to fabricate LiNi0.95−xCoxTi0.05O2 (x = 0.25 and 0.30) cathode materials for Li-ion batteries.
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Affiliation(s)
- Laxman Singh
- Department of Chemistry
- University of Ulsan
- Ulsan 44610
- Republic of Korea
| | - Jiwon Lee
- Department of Chemistry
- University of Ulsan
- Ulsan 44610
- Republic of Korea
| | - Geun Wan Kim
- Department of Chemistry
- University of Ulsan
- Ulsan 44610
- Republic of Korea
| | - Minsoo Ji
- Department of Chemistry
- University of Ulsan
- Ulsan 44610
- Republic of Korea
| | - Chaewon Moon
- Department of Chemistry
- University of Ulsan
- Ulsan 44610
- Republic of Korea
| | - Hansol Lee
- Department of Chemistry
- University of Ulsan
- Ulsan 44610
- Republic of Korea
| | - Ji Won Ha
- Department of Chemistry
- University of Ulsan
- Ulsan 44610
- Republic of Korea
| | - Youngil Lee
- Department of Chemistry
- University of Ulsan
- Ulsan 44610
- Republic of Korea
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Ercolino G, Stelmachowski P, Specchia S. Catalytic Performance of Pd/Co3O4 on SiC and ZrO2 Open Cell Foams for Process Intensification of Methane Combustion in Lean Conditions. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b01087] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Giuliana Ercolino
- Department
of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Paweł Stelmachowski
- Department
of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
- Faculty
of Chemistry, Jagiellonian University in Kraków, ul. Ingardena
3, 30-060 Kraków, Poland
| | - Stefania Specchia
- Department
of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
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