Liquid Metal Batteries good or bad idee? The liquid metal battery (LMB) project seeks to develop a low cost and long lifespan battery for grid-scale stationary energy storage.
The battery utilizes three liquid layers as
the electroactive components, including a liquid metal positive
electrode, a fused salt electrolyte, and a liquid metal negative
electrode. The three liquid layers float on top of one another due on
their density differences and immiscibility, promising low assembly cost
with use of inexpensive materials. Furthermore, liquid electrodes avoid
common failure mechanisms of solid-state battery components,
potentially enabling a long lifespan device. Current research efforts
encompass a wide range of scientific topics and engineering challenges,
including fundamental thermodynamic measurements of candidate electrode
couples, computational thermal modeling, electrochemical studies of
molten salt electrolytes, long term corrosion and lifespan testing,
testing and characterization of complete single-cell batteries, and
scaling up the design to build larger single-cells.
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