Before revision:  The Mg-S battery is found to have a good environmental performance with potential to outperform also current lithium-ion batteries in terms of environmental impacts. However, this applies only if the assumed evolutions of the cell composition are achieved together with comparable performance in terms of battery lifespan. The initial (non-optimized ) prototype cell cannot compete with current LIB in terms of energy density or environmental friendliness , mainly due to the high share of non-active components, decreasing its performance substantially.
After revision:  The Mg-S battery is found to have a good environmental performance with potential to outperform also current lithium-ion batteries (LIB), exploring future improvement potentials. It turns out that the initial (non-optimised ) prototype cell cannot compete with current LIB in terms of energy density or environmental friendliness , mainly due to the high share of non-active components, decreasing its performance substantially.