William Nyström

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Presentation

Fit for purpose - cell chemistry landscape

No single battery technology can be considered superior for all purposes. The right cell chemistry depends on the operational profile of the application. So, the first consideration is to have an accurate analysis of the power consumption profile. NMC is considered the standard option for shipboard use because of overall performance. However, the second critical factor is an understanding of Class rules and guidelines. Given the widespread use of NMC batteries, it might be assumed that rules are based on their characteristics. However, these rules cover installations, but they are agnostic on technology. If the battery type in use is being made to follow requirements which are irrelevant, it could lead to complexity and redundancy costs. The third consideration is recycling. EU regulations come into force in 2025 which increase required recyclability. Battery types differ in recyclability with cobalt and nickel the subject of concern. LFP batteries do not contain Cobalt or Nickel and could be considered a better environmental option. However, developments in, and the profitability of, NMC/NCA recycling needs consideration. The presentation will look in detail at these and other selection criteria.