Technical Name | Lithium battery energy storage system development and new generation of solid-state battery materials | ||
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Project Operator | Academia Sinica | ||
Project Host | 吳茂昆 | ||
Summary | The next generation of lithium-ion battery materials must have characteristics of high specific capacity, high power, and reasonable price for applications. The leading class of materials most suitable for the challenge is the Li- and manganese-rich class of oxides. The first is a mechanism whereby the average voltage of cells continuously decreases with each successive charge and discharge cycle. This phenomenon, known as voltage fade, decreases the energy output of cells to unacceptable levels too early in cycling. However, we modify the band structure accordingly to improve this phenomenon. A 60 mAh pouch cell was utilized in testing the efficiency of the material apart from the preliminary tests carried out in the form of coin cells. A 205 mAh/g reversible discharge capacity was attainable with more than 85% capacity retention after 400 cycles of charge/discharge. |
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Scientific Breakthrough | Voltage fade is the main reason for decreasing the energy output of lithium-rich cathode materials to unacceptable levels too early in cycling. However, we modify the band structure accordingly to improve this phenomenon. A 60 mAh pouch cell was utilized in testing the efficiency of the material apart from the preliminary tests carried out in the form of coin cells. A 205 mAh/g reversible discharge capacity was attainable with more than 85% capacity retention after 400 cycles of charge/discharge. |
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Industrial Applicability | The development of large cell technology has greatly reduced the difficulty and cost of the battery management system. In addition, it can cooperate with local raw material suppliers to produce the required raw materials. |
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Keyword | LiNiCoMnO2 cathode material Li-Mn rich cathode material secondary battery Li-ion cell cell pack energy storage system automated guided vehicle automated guided forklift electric vehicle |