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Yang Z, Zhao E, Li N, Gao L, He L, Wang B, Wang F, Zhao Y, Zhao J, Han S. Suppressing Surface Ligand-to-Metal Charge Transfer toward Stable High-Voltage LiCoO 2. ACS APPLIED MATERIALS & INTERFACES 2024; 16:1757-1766. [PMID: 38155532 DOI: 10.1021/acsami.3c14184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
Increasing the charging cutoff voltage is a viable approach to push the energy density limits of LiCoO2 and meet the requirements of the rapid development of 3C electronics. However, an irreversible oxygen redox is readily triggered by the high charging voltage, which severely restricts practical applications of high-voltage LiCoO2. In this study, we propose a modification strategy via suppressing surface ligand-to-metal charge transfer to inhibit the oxygen redox-induced structure instability. A d0 electronic structure Zr4+ is selected as the charge transfer insulator and successfully doped into the surface lattice of LiCoO2. Using a combination of theoretical calculations, ex situ X-ray absorption spectra, and in situ differential electrochemical mass spectrometry analysis, our results show that the modified LiCoO2 exhibits suppressed oxygen redox activity and stable redox electrochemistry. As a result, it demonstrates a robust long-cycle lattice structure with a practically eliminated voltage decay (0.17 mV/cycle) and an excellent capacity retention of 89.4% after 100 cycles at 4.6 V. More broadly, this work provides a new perspective on suppressing the oxygen redox activity through modulating surface ligand-to-metal charge transfer for achieving a stable high-voltage ion storage structure.
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Affiliation(s)
- Zhiqiang Yang
- Academy for Advanced Interdisciplinary Studies & Department of Physics, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - Enyue Zhao
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - Na Li
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Lei Gao
- Academy for Advanced Interdisciplinary Studies & Department of Physics, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Lunhua He
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
- Spallation Neutron Source Science Center, Dongguan, Guangdong 523803, China
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Baotian Wang
- Spallation Neutron Source Science Center, Dongguan, Guangdong 523803, China
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Fangwei Wang
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
- Spallation Neutron Source Science Center, Dongguan, Guangdong 523803, China
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Yusheng Zhao
- Academy for Advanced Interdisciplinary Studies & Department of Physics, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
- Eastern Institute for Advanced Study, Ningbo 315200, China
| | - Jinkui Zhao
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Songbai Han
- Academy for Advanced Interdisciplinary Studies & Department of Physics, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
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2
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Zhang J, Wong D, Zhang Q, Zhang N, Schulz C, Bartkowiak M, An K, Gu L, Hu Z, Liu X. Reducing Co/O Band Overlap through Spin State Modulation for Stabilized High Capability of 4.6 V LiCoO 2. J Am Chem Soc 2023; 145:10208-10219. [PMID: 37098172 DOI: 10.1021/jacs.3c01128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
High-voltage LiCoO2 (LCO) attracts great interest because of its large specific capacity, but it suffers from oxygen release, structural degradation, and quick capacity drop. These daunting issues root from the inferior thermodynamics and kinetics of the triggered oxygen anion redox (OAR) at high voltages. Herein, a tuned redox mechanism with almost only Co redox is demonstrated by atomically engineered high-spin LCO. The high-spin Co network reduces the Co/O band overlap, eliminates the adverse phase transition of O3 → H1-3, delays the exceeding of the O 2p band over the Fermi level, and suppresses excessive O → Co charge transfer at high voltages. This function intrinsically promotes Co redox and restrains O redox, fundamentally addressing the issues of O2 release and coupled detrimental Co reduction. Moreover, the chemomechanical heterogeneity caused by different kinetics of Co/O redox centers and the inferior rate performance limited by slow O redox kinetics is simultaneously improved owing to the suppression of slow OAR and the excitation of fast Co redox. The modulated LCO delivers ultrahigh rate capacities of 216 mAh g-1 (1C) and 195 mAh g-1(5C), as well as high capacity retentions of 90.4% (@100 cycles) and 86.9% (@500 cycles). This work sheds new light on the design for a wide range of O redox cathodes.
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Affiliation(s)
- Jicheng Zhang
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Deniz Wong
- Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, Berlin D-14109, Germany
| | - Qinghua Zhang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Science, Beijing 100190, P. R. China
| | - Nian Zhang
- Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, P. R. China
| | - Christian Schulz
- Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, Berlin D-14109, Germany
| | - Maciej Bartkowiak
- Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, Berlin D-14109, Germany
| | - Ke An
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Lin Gu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Science, Beijing 100190, P. R. China
| | - Zhongbo Hu
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Xiangfeng Liu
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
- CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing 100190, P. R. China
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An overview of solid-state electron paramagnetic resonance spectroscopy for artificial fuel reactions. iScience 2022; 25:105360. [DOI: 10.1016/j.isci.2022.105360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Hernández-Fontes C, Pfeiffer H. Enhanced CO capture properties of Li 2MnO 3via inducing layered to spinel transition by cation doping with Fe, Co, Ni and Cu. REACT CHEM ENG 2022. [DOI: 10.1039/d2re00064d] [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
Lithium manganate (Li2MnO3) was the first alkaline ceramic to show selective CO chemisorption in non-oxidative atmospheres, which is of interest for gas separation processes, such as high purity H2 production.
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Affiliation(s)
- Carlos Hernández-Fontes
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Del. Coyoacán, CP 04510, Ciudad de México, Mexico
| | - Heriberto Pfeiffer
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Del. Coyoacán, CP 04510, Ciudad de México, Mexico
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5
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Lau VWH, Kim JB, Zou F, Kang YM. Elucidating the charge storage mechanism of carbonaceous and organic electrode materials for sodium ion batteries. Chem Commun (Camb) 2021; 57:13465-13494. [PMID: 34853843 DOI: 10.1039/d1cc04925a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sodium ion batteries (SIB) have received much research attention in the past decades as they are considered to be one alternative to the currently prevalent lithium ion batteries, and carbonaceous and organic compounds present two promising classes of SIB electrode materials advantaged by abundance of their constituent elements and reduced environmental footprints. To accelerate the development of these materials for SIB applications, future research directions must be guided by a thorough understanding of the charge storage mechanism. This review presents recent efforts in mechanism elucidation for these two classes of SIB electrode materials since, compared to their inorganic counterparts, they have unique challenges in material analysis. Topics covered will include characterization techniques and analytical frameworks for mechanism elucidation, emphasizing the advantages and limitations of individual experimental methodologies and providing a commentary on scientific rigor in result interpretation.
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Affiliation(s)
- Vincent Wing-Hei Lau
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea. .,Brain Korea Center for Smart Materials and Devices, Korea University, Seoul 02841, Republic of Korea
| | - Jae-Bum Kim
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea.
| | - Feng Zou
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea.
| | - Yong-Mook Kang
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea. .,KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Republic of Korea
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Wang B, Le Fevre LW, Brookfield A, McInnes EJL, Dryfe RAW. Resolution of Lithium Deposition versus Intercalation of Graphite Anodes in Lithium Ion Batteries: An In Situ Electron Paramagnetic Resonance Study. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106178] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Bin Wang
- Department of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
- The Faraday Institution Harwell Science and Innovation Campus Quad One Didcot OX11 0RA UK
| | - Lewis W. Le Fevre
- Department of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
- Department of Electrical and Electronic Engineering Oxford Road Manchester M13 9PL UK
- National Graphene Institute The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Adam Brookfield
- Department of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
- Photon Science Institute University of Manchester Oxford Road Manchester M13 9PL UK
| | - Eric J. L. McInnes
- Department of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
- The Faraday Institution Harwell Science and Innovation Campus Quad One Didcot OX11 0RA UK
- Photon Science Institute University of Manchester Oxford Road Manchester M13 9PL UK
| | - Robert A. W. Dryfe
- Department of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
- The Faraday Institution Harwell Science and Innovation Campus Quad One Didcot OX11 0RA UK
- National Graphene Institute The University of Manchester Oxford Road Manchester M13 9PL UK
- Henry Royce Institute for Advanced Materials University of Manchester Oxford Road Manchester M13 9PL UK
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Wang B, Le Fevre LW, Brookfield A, McInnes EJL, Dryfe RAW. Resolution of Lithium Deposition versus Intercalation of Graphite Anodes in Lithium Ion Batteries: An In Situ Electron Paramagnetic Resonance Study. Angew Chem Int Ed Engl 2021; 60:21860-21867. [PMID: 34297479 PMCID: PMC8518894 DOI: 10.1002/anie.202106178] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 07/02/2021] [Indexed: 11/06/2022]
Abstract
In situ electrochemical electron paramagnetic resonance (EPR) spectroscopy is used to understand the mixed lithiation/deposition behavior on graphite anodes during the charging process. The conductivity, degree of lithiation, and the deposition process of the graphite are reflected by the EPR spectroscopic quality factor, the spin density, and the EPR spectral change, respectively. Classical over‐charging (normally associated with potentials ≤0 V vs. Li+/Li) are not required for Li metal deposition onto the graphite anode: Li deposition initiates at ca. +0.04 V (vs. Li+/Li) when the scan rate is lowered to 0.04 mV s−1. The inhibition of Li deposition by vinylene carbonate (VC) additive is highlighted by the EPR results during cycling, attributed to a more mechanically flexible and polymeric SEI layer with higher ionic conductivity. A safe cut‐off potential limit of +0.05 V for the anode is suggested for high rate cycling, confirmed by the EPR response over prolonged cycling.
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Affiliation(s)
- Bin Wang
- Department of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.,The Faraday Institution, Harwell Science and Innovation Campus, Quad One, Didcot, OX11 0RA, UK
| | - Lewis W Le Fevre
- Department of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.,Department of Electrical and Electronic Engineering, Oxford Road, Manchester, M13 9PL, UK.,National Graphene Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Adam Brookfield
- Department of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.,Photon Science Institute, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Eric J L McInnes
- Department of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.,The Faraday Institution, Harwell Science and Innovation Campus, Quad One, Didcot, OX11 0RA, UK.,Photon Science Institute, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Robert A W Dryfe
- Department of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.,The Faraday Institution, Harwell Science and Innovation Campus, Quad One, Didcot, OX11 0RA, UK.,National Graphene Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.,Henry Royce Institute for Advanced Materials, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
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Korneikov RI, Efremov VV, Ivanenko VI, Kesarev KA. The Effect of Thermal Treatment on the Physical Properties of LiCoO2 Stoichiometric Composition. RUSS J ELECTROCHEM+ 2021. [DOI: 10.1134/s1023193521050074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Biller JR, McPeak JE. EPR Everywhere. APPLIED MAGNETIC RESONANCE 2021; 52:1113-1139. [PMID: 33519097 PMCID: PMC7826499 DOI: 10.1007/s00723-020-01304-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 10/16/2020] [Accepted: 12/06/2020] [Indexed: 06/12/2023]
Abstract
This review is inspired by the contributions from the University of Denver group to low-field EPR, in honor of Professor Gareth Eaton's 80th birthday. The goal is to capture the spirit of innovation behind the body of work, especially as it pertains to development of new EPR techniques. The spirit of the DU EPR laboratory is one that never sought to limit what an EPR experiment could be, or how it could be applied. The most well-known example of this is the development and recent commercialization of rapid-scan EPR. Both of the Eatons have made it a point to remain knowledgeable on the newest developments in electronics and instrument design. To that end, our review touches on the use of miniaturized electronics and applications of single-board spectrometers based on software-defined radio (SDR) implementations and single-chip voltage-controlled oscillator (VCO) arrays. We also highlight several non-traditional approaches to the EPR experiment such as an EPR spectrometer with a "wand" form factor for analysis of the OxyChip, the EPR-MOUSE which enables non-destructive in situ analysis of many non-conforming samples, and interferometric EPR and frequency swept EPR as alternatives to classical high Q resonant structures.
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Affiliation(s)
| | - Joseph E. McPeak
- University of Denver, Denver, CO 80210 USA
- Berlin Joint EPR Laboratory and EPR4Energy, Department Spins in Energy Conversion and Quantum Information Science (ASPINS), Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
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Geng F, Yang Q, Li C, Hu B, Zhao C, Shen M, Hu B. Operando EPR and EPR Imaging Study on a NaCrO 2 Cathode: Electronic Property and Structural Degradation with Cr Dissolution. J Phys Chem Lett 2021; 12:781-786. [PMID: 33410689 DOI: 10.1021/acs.jpclett.0c03327] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
NaCrO2 is a potential cathode material for sodium-ion batteries due to its low cost, safety, and high power. It is necessary to further understand its electronic property during cycling in advance of practical application. In this work, operando EPR is carried out to monitor the evolution of the electronic structure for NaCrO2 cycled between 2.2-3.6 V and 2.2-4.5 V. We discover that electronic delocalization takes place at the early stage of charge, which may account for the excellent rate performance. In addition, via EPR imaging, an EPR signal associated with the irreversible phase transition at 3.8 V is located in the electrolyte, which is then attributed to the Cr5+ ions dissolved with the surface reconstruction. These findings may help researchers to better design and modify the Cr-based cathode materials.
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Affiliation(s)
- Fushan Geng
- Shanghai Key Laboratory of Magnetic Resonance, State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200062, P.R. China
| | - Qi Yang
- Shanghai Key Laboratory of Magnetic Resonance, State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200062, P.R. China
| | - Chao Li
- Shanghai Key Laboratory of Magnetic Resonance, State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200062, P.R. China
| | - Bei Hu
- Shanghai Key Laboratory of Magnetic Resonance, State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200062, P.R. China
| | - Chong Zhao
- Shanghai Key Laboratory of Magnetic Resonance, State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200062, P.R. China
| | - Ming Shen
- Shanghai Key Laboratory of Magnetic Resonance, State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200062, P.R. China
| | - Bingwen Hu
- Shanghai Key Laboratory of Magnetic Resonance, State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200062, P.R. China
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