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Pulse charging and pulse discharging have been reported by many authors in the literature to improve the performance of various secondary electrochemical cells. Only a few authors mentioned the effects of such charge and discharge method on Lithium-ion batteries. The overall objective of this work is to experimentally investigate the impact of certain current pulse profiles on the electrical performance of Li-ion batteries. The results highlight a detrimental impact of periodic pulses on the cell performance compared to profiles with constant current. Index Terms-Concentration gradients-Current pulses-Energy Storage System-Electrical performance-Lithium-ion batteries I. NOMENCLATURE ithium-ion battery (Li-ion) is considered to be one of the most promising battery chemistry for numerous applications. Especially in the field of transportation, where high power and energy density are needed for electric vehicles (EV) and hybrid electric vehicles (HEV). Hence, significant scientific efforts have been made to overcome the disadvantages linked to the relative lack of maturity of this battery chemistry. This work, which deals with an experimental investigation of the impact of specific load profiles on battery performance is a part of this context. The objective is to increase Li-ion batteries performance in its widest sense by a better understanding of their internal mechanisms. In particular, this work aims to experimentally investigate the effect of particular discharge or charge profiles on the electrical behaviour of Li-ion batteries. II. BACKGROUND ON LI-ION BATTERIES A Li-ion cell is constituted from the association of two The financial support of Volvo Technology Corporation is greatly acknowledged for this work, as well as the academic support from the Ampere Lab.

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