A study of the effects of cycling frequency on lithium-ion and lithium polymer batteries' degradation
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Conventional energy sources are depleting rapidly and might last for another 50-150 years depending on our current usage. Environmental issues like global warming are also rising quickly. Renewable energy sources can address both these issues and offer various other advantages like stabilizing the load, lower maintenance requirements etc. However, due to their intermittent supply, they are not always reliable. The energy harnessed from renewable sources needs to be stored and readily available for our use. Hence, the power system network is shifting towards energy storage technologies. There are various energy storage technologies available, out of which the battery energy storage systems (BESS) for large-scale energy storage are widely used. Examples of BESS are in the modern electronics [and] electrical devices like laptops, smartphones, iPad etc. This thesis focuses on various types of batteries used in BESS, their degradation processes and the factors contributing to their degradation. Two types of batteries, lithium-ion and lithium-polymer were tested under different conditions to observe the degradation process and the results obtained were analyzed.
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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License. Copyright held by author.