Cycle-life testing of large-capacity lithium-ion cells in simulated satellite operation |
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| Affiliation: | 1. Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu 300, Taiwan, ROC;2. Department of Chemistry, National Taiwan Normal University, Taipei 106, Taiwan, ROC;1. School of Chemistry, University of Southampton, SO17 1BJ Southampton, UK;2. Institut de Chimie des Substances Naturelles, CNRS UPR2301, Avenue de la Terrasse, 91190 Gif-sur-Yvette, France;1. Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA;2. Materials Research & Design Inc., Wayne, PA 19087, USA;1. Department of Biomass Chemistry and Engineering, Sichuan University, Chengdu 610065, China;2. National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China;3. Institute for Superconducting and Electronic Materials, Australian Institute of Innovative Materials, University of Wollongong, Wollongong, NSW 2522, Australia |
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| Abstract: | We are conducting cycle-life testing of 10–100 Ah-class lithium-ion cells in a simulated satellite operation at the Japan Aerospace Exploration Agency (JAXA). This paper reviews the latest test results of these lithium-ion cells. Thus far, we have verified impressive life performance exceeding 30,000 cycles in a simulated low-earth-orbit (LEO) mode and 1800 cycles in a simulated geostationary-earth-orbit (GEO) mode for some of these cells. We optimized the thickness of the electrode layer to suppress cell-internal impedance and found that a lithium-ion cell with a thin electrode layer exhibited promising cycling performance in a simulated LEO operation. Since the electrode material is an important factor affecting the charge–discharge behavior of a lithium-ion cell, we also compared the cycling performance of lithium-ion cells with different cathode materials. |
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