Comments on stabilizing layered manganese oxide electrodes for Li batteries |
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| Institution: | 1. EMMG, Physics Division, PINSTECH, P. O. Nilore, Islamabad, Pakistan;2. DPAM, PIEAS, P. O. Nilore, Islamabad, Pakistan;3. Queensland Micro-Nanotechnology Centre, Griffith University, Nathan, QLD 4111, Australia;1. School of Metallurgy, Northeastern University, Shenyang 110819, China;2. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA;3. Energy Storage and Distributed Resources Division, Energy Technologies Area, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA;4. Geballe Laboratory for Advanced Materials, Stanford University, Stanford, CA 94305, USA;5. School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen 518055, China;6. School of Physics, National Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;7. Department of Materials Science and Engineering, Binghamton University, Binghamton, NY 13902, USA;8. School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China;9. College of Physics and Materials Science, Tianjin Normal University, Tianjin 300387, China;10. Department of Chemistry, Stanford University, Stanford, CA 94305, USA;11. Department of Materials Science & Engineering, Stanford University, Stanford, CA 94305, USA;12. Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA;13. Department of Electrical Engineering, Tsinghua University, Beijing 100084, China;1. College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China;2. School of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling 408100,PR China;3. Advanced Research Centre, Central South University, Changsha 410083, PR China;4. Hunan Changyuan Lico Co., Ltd., Changsha 410205, PR China;1. Technische Universität Darmstadt, Department of Geo- and Material Science, 64287, Darmstadt, Germany;2. Department of Chemistry, Institute of New Energy, Fudan University, Shanghai, 200433, People''s Republic of China;3. Karlsruhe Institute of Technology (KIT), Institute for Applied Materials (IAM), 76344 Eggenstein-Leopoldshafen, Germany;4. Robert Bosch GmbH, Corporate Research and Advance Engineering, 70839, Gerlingen, Germany;1. CNRS/Univ. Pau & Pays Adour / E2S UPPA, Institut des Sciences Analytiques et de Physicochimie pour l’Environnement et les Matériaux − UMR 5254, 64000 Pau, France;2. CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB UMR 5026, F-33600 Pessac, France;3. RS2E, Réseau Français sur le Stockage Electrochimique de l’Energie, FR CNRS 3459, F-80039 Amiens Cedex 1, France;4. ALISTORE-ERI European Research Institute, FR CNRS 3104, F-80039 Amiens Cedex 1, France |
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| Abstract: | An electrochemical study of structurally-integrated xLi2MnO3•(1 −x)LiMn0.5Ni0.5O2 ‘composite’ materials has been undertaken to investigate the stability of electrochemically-activated electrodes at the Li2MnO3-rich end of the Li2MnO3–LiMn0.5Ni0.5O2 tie-line, i.e., for 0.7 ≤ x ≤ 0.95. Excellent performance was observed for x = 0.7 in lithium half-cells; comparable to activated electrodes that have significantly lower values of x and are traditionally the preferred materials of choice. Electrodes with higher manganese content (x ≥ 0.8) showed significantly reduced performance. Implications for stabilizing low-cost, manganese-rich, layered lithium-metal-oxide electrode materials are discussed. |
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