26 Dec '13, 11pm

PNNL-led team devises microscopy technique for investigating real Li-ion batteries in real time

… However, three typical deficiencies are associated with the open-cell configuration. First, for the open cell, the electrolyte is only in point contact with the electrode, which may inadvertently modify the diffusion pattern of Li ions in the electrode, and therefore, what has been obtained is not necessarily representative of the case where the electrode is fully immersed in the liquid electrolyte in a real battery. Second, for the case of using Li2 O as the electrolyte, a large overpotential is normally applied to drive the Li ions into the electrode, which may change the kinetics and phase behaviors of solid-state electrode lithiation. Third, the use of the ionic liquid or Li2 O electrolyte excludes some of the fundamental processes which only occur in real electrolytes and the battery operating conditions, such as the interaction between electrolyte and electrode and...

Full article: http://www.greencarcongress.com/2013/12/pnnl-led-team-dev...

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