Kawsar Mustefa Abdirahman's research
Kawsar studied lithium-ion battery degradation in The Gambia
Impact of High Ambient Temperatures on Lithium-Ion Battery’s Techno-Economics owing to Degradation as a Result of Ambient Temperature When Performing Distributed Battery Services to The Grid in The Gambia vs a Cooler Country
The inability to predict the lifetime of Li-ion batteries is preventing their complete grid integration. It also has an impact on the battery's return on investment (ROI). This model determines the battery's life with varying temperatures based on a developing nation (Gambia) with relatively high temperatures. This research utilises a lumped thermal electrochemical coupled model to estimate Li-ion battery lifespan based on ambient temperature. The proposed model evaluates the influence of ambient temperature on capacity fading. This study considers the cell to be a single homogeneous layer that accounts for both reversible and irreversible heat. The model incorporates convective heat transfer. The model evaluates the impact of ambient temperature on battery ageing while holding other variables like number of cycles constant. Notably, the average ambient temperature of the Gambia is comparable to that of the United Kingdom. The model predicts and measures battery life, with 4.4 years in Gambia and 4.7 years in the UK. The findings show that high ambient temperatures limit battery life and have an impact on battery ROI in Gambia.
As I moved from research to learning totally new software to interacting with the operators of The Gambia's grid for data collecting, the process was tedious yet rewarding. The findings were similar to what I had hoped for, and I am convinced that my recommendations in the field of sustainable energy, particularly energy storage, will be effective.